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OpenCloudOS-Kernel/fs/xfs/libxfs/xfs_ag.c

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xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* Copyright (c) 2018 Red Hat, Inc.
* All rights reserved.
*/
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_trans_resv.h"
xfs: account for log space when formatting new AGs When we're writing out a fresh new AG, make sure that we don't list an internal log as free and that we create the rmap for the region. growfs never does this, but we will need it when we hook up mkfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
#include "xfs_bit.h"
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
#include "xfs_sb.h"
#include "xfs_mount.h"
#include "xfs_btree.h"
#include "xfs_alloc_btree.h"
#include "xfs_rmap_btree.h"
#include "xfs_alloc.h"
xfs: factor the ag length extension code into libxfs Growfs currently manually codes the extension of the last AG in a filesytem during the growfs process. Factor that out of the growfs code and move it into libxfs along with teh rest of the AG header modification code. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
#include "xfs_ialloc.h"
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
#include "xfs_rmap.h"
#include "xfs_ag.h"
xfs: add a new ioctl to describe allocation group geometry Add a new ioctl to describe an allocation group's geometry. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-04-12 22:41:17 +08:00
#include "xfs_ag_resv.h"
xfs: report AG health via AG geometry ioctl Use the AG geometry info ioctl to report health status too. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-04-12 22:41:18 +08:00
#include "xfs_health.h"
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
#include "xfs_error.h"
#include "xfs_bmap.h"
#include "xfs_defer.h"
#include "xfs_log_format.h"
#include "xfs_trans.h"
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
#include "xfs_trace.h"
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
#include "xfs_inode.h"
#include "xfs_icache.h"
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
/*
* Passive reference counting access wrappers to the perag structures. If the
* per-ag structure is to be freed, the freeing code is responsible for cleaning
* up objects with passive references before freeing the structure. This is
* things like cached buffers.
*/
struct xfs_perag *
xfs_perag_get(
struct xfs_mount *mp,
xfs_agnumber_t agno)
{
struct xfs_perag *pag;
rcu_read_lock();
pag = radix_tree_lookup(&mp->m_perag_tree, agno);
if (pag) {
xfs: rework the perag trace points to be perag centric So that they all output the same information in the traces to make debugging refcount issues easier. This means that all the lookup/drop functions no longer need to use the full memory barrier atomic operations (atomic*_return()) so will have less overhead when tracing is off. The set/clear tag tracepoints no longer abuse the reference count to pass the tag - the tag being cleared is obvious from the _RET_IP_ that is recorded in the trace point. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:52 +08:00
trace_xfs_perag_get(pag, _RET_IP_);
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
ASSERT(atomic_read(&pag->pag_ref) >= 0);
xfs: rework the perag trace points to be perag centric So that they all output the same information in the traces to make debugging refcount issues easier. This means that all the lookup/drop functions no longer need to use the full memory barrier atomic operations (atomic*_return()) so will have less overhead when tracing is off. The set/clear tag tracepoints no longer abuse the reference count to pass the tag - the tag being cleared is obvious from the _RET_IP_ that is recorded in the trace point. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:52 +08:00
atomic_inc(&pag->pag_ref);
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
}
rcu_read_unlock();
return pag;
}
/*
* search from @first to find the next perag with the given tag set.
*/
struct xfs_perag *
xfs_perag_get_tag(
struct xfs_mount *mp,
xfs_agnumber_t first,
xfs: clean up incore inode walk functions This ambitious series aims to cleans up redundant inode walk code in xfs_icache.c, hide implementation details of the quotaoff dquot release code, and eliminates indirect function calls from incore inode walks. The first thing it does is to move all the code that quotaoff calls to release dquots from all incore inodes into xfs_icache.c. Next, it separates the goal of an inode walk from the actual radix tree tags that may or may not be involved and drops the kludgy XFS_ICI_NO_TAG thing. Finally, we split the speculative preallocation (blockgc) and quotaoff dquot release code paths into separate functions so that we can keep the implementations cohesive. Christoph suggested last cycle that we 'simply' change quotaoff not to allow deactivating quota entirely, but as these cleanups are to enable one major change in behavior (deferred inode inactivation) I do not want to add a second behavior change (quotaoff) as a dependency. To be blunt: Additional cleanups are not in scope for this series. Next, I made two observations about incore inode radix tree walks -- since there's a 1:1 mapping between the walk goal and the per-inode processing function passed in, we can use the goal to make a direct call to the processing function. Furthermore, the only caller to supply a nonzero iter_flags argument is quotaoff, and there's only one INEW flag. From that observation, I concluded that it's quite possible to remove two parameters from the xfs_inode_walk* function signatures -- the iter_flags, and the execute function pointer. The middle of the series moves the INEW functionality into the one piece (quotaoff) that wants it, and removes the indirect calls. The final observation is that the inode reclaim walk loop is now almost the same as xfs_inode_walk, so it's silly to maintain two copies. Merge the reclaim loop code into xfs_inode_walk. Lastly, refactor the per-ag radix tagging functions since there's duplicated code that can be consolidated. This series is a prerequisite for the next two patchsets, since deferred inode inactivation will add another inode radix tree tag and iterator function to xfs_inode_walk. v2: walk the vfs inode list when running quotaoff instead of the radix tree, then rework the (now completely internal) inode walk function to take the tag as the main parameter. v3: merge the reclaim loop into xfs_inode_walk, then consolidate the radix tree tagging functions v4: rebase to 5.13-rc4 v5: combine with the quotaoff patchset, reorder functions to minimize forward declarations, split inode walk goals from radix tree tags to reduce conceptual confusion v6: start moving the inode cache code towards the xfs_icwalk prefix -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEUzaAxoMeQq6m2jMV+H93GTRKtOsFAmC5Yv0ACgkQ+H93GTRK tOv7Fg//Z7cKph0zSg6qsukMEMZxscuNcEBydCW1bu9gSx1NpszDpiGqAiO5ZB3X wP2XkCqjuatbNGGvkNLHS/M4sbLX3ELogvYmMRvUhDoaSFxT/KKgxvsyNffiCSS7 xRB/rvWRp9MGRpBWPF0ZUxFU6VBzhCrYdMsNhvW95AEup8S/j+NplwoIif0gzaZZ Q6Fl4Ca9VEBvJQPV+/zkLih19iFItmARJhPHUs4BO1nZv+CzZBFQHg7Ijw7nW92j eSY68W4LH/IQ5cqm+HrD/+Z6ns0P7J2viewzVymkNEGnuX4a0xrQrzQ8ydRsAxTi 9EDrpIe3MbSI5YjJfmRe8G3LX5p7vBpqc8TeyZdRDMGWkFjT33HPlQNb6WxKLQbA mjKdfr8AYZR/UQKW/7oZFrJnOoMpYRAQ4Sn/9BAYZQYm7tiLzuZsrEZ7JBwiUA56 XHmlsDDeLzJeKvjmUu8M3H4oh4Nwf5/I2vJwHjueTfhl83uJP04igIXC4rnq56bM AAAjH9uV11Fo3q0ywAnRtN2HYj8PEJlCMK5CNskILrGeMITsBPGht0SbaA6hDI2h GYmltKInHzuPhHC9NfyPVrVr3BrmPR5cBsVFESiz5A4E9rbuKmmna6Yk8MFlMyl8 FRIA3zVatJ2qQXtsAcdI8AZzMd7ciYhkAgCqFKxv8qK/qxITHh4= =Rxdn -----END PGP SIGNATURE----- Merge tag 'inode-walk-cleanups-5.14_2021-06-03' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux into xfs-5.14-merge2 xfs: clean up incore inode walk functions This ambitious series aims to cleans up redundant inode walk code in xfs_icache.c, hide implementation details of the quotaoff dquot release code, and eliminates indirect function calls from incore inode walks. The first thing it does is to move all the code that quotaoff calls to release dquots from all incore inodes into xfs_icache.c. Next, it separates the goal of an inode walk from the actual radix tree tags that may or may not be involved and drops the kludgy XFS_ICI_NO_TAG thing. Finally, we split the speculative preallocation (blockgc) and quotaoff dquot release code paths into separate functions so that we can keep the implementations cohesive. Christoph suggested last cycle that we 'simply' change quotaoff not to allow deactivating quota entirely, but as these cleanups are to enable one major change in behavior (deferred inode inactivation) I do not want to add a second behavior change (quotaoff) as a dependency. To be blunt: Additional cleanups are not in scope for this series. Next, I made two observations about incore inode radix tree walks -- since there's a 1:1 mapping between the walk goal and the per-inode processing function passed in, we can use the goal to make a direct call to the processing function. Furthermore, the only caller to supply a nonzero iter_flags argument is quotaoff, and there's only one INEW flag. From that observation, I concluded that it's quite possible to remove two parameters from the xfs_inode_walk* function signatures -- the iter_flags, and the execute function pointer. The middle of the series moves the INEW functionality into the one piece (quotaoff) that wants it, and removes the indirect calls. The final observation is that the inode reclaim walk loop is now almost the same as xfs_inode_walk, so it's silly to maintain two copies. Merge the reclaim loop code into xfs_inode_walk. Lastly, refactor the per-ag radix tagging functions since there's duplicated code that can be consolidated. This series is a prerequisite for the next two patchsets, since deferred inode inactivation will add another inode radix tree tag and iterator function to xfs_inode_walk. v2: walk the vfs inode list when running quotaoff instead of the radix tree, then rework the (now completely internal) inode walk function to take the tag as the main parameter. v3: merge the reclaim loop into xfs_inode_walk, then consolidate the radix tree tagging functions v4: rebase to 5.13-rc4 v5: combine with the quotaoff patchset, reorder functions to minimize forward declarations, split inode walk goals from radix tree tags to reduce conceptual confusion v6: start moving the inode cache code towards the xfs_icwalk prefix * tag 'inode-walk-cleanups-5.14_2021-06-03' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux: xfs: refactor per-AG inode tagging functions xfs: merge xfs_reclaim_inodes_ag into xfs_inode_walk_ag xfs: pass struct xfs_eofblocks to the inode scan callback xfs: fix radix tree tag signs xfs: make the icwalk processing functions clean up the grab state xfs: clean up inode state flag tests in xfs_blockgc_igrab xfs: remove indirect calls from xfs_inode_walk{,_ag} xfs: remove iter_flags parameter from xfs_inode_walk_* xfs: move xfs_inew_wait call into xfs_dqrele_inode xfs: separate the dqrele_all inode grab logic from xfs_inode_walk_ag_grab xfs: pass the goal of the incore inode walk to xfs_inode_walk() xfs: rename xfs_inode_walk functions to xfs_icwalk xfs: move the inode walk functions further down xfs: detach inode dquots at the end of inactivation xfs: move the quotaoff dqrele inode walk into xfs_icache.c [djwong: added variable names to function declarations while fixing merge conflicts] Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-06-09 00:26:44 +08:00
unsigned int tag)
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
{
struct xfs_perag *pag;
int found;
rcu_read_lock();
found = radix_tree_gang_lookup_tag(&mp->m_perag_tree,
(void **)&pag, first, 1, tag);
if (found <= 0) {
rcu_read_unlock();
return NULL;
}
xfs: rework the perag trace points to be perag centric So that they all output the same information in the traces to make debugging refcount issues easier. This means that all the lookup/drop functions no longer need to use the full memory barrier atomic operations (atomic*_return()) so will have less overhead when tracing is off. The set/clear tag tracepoints no longer abuse the reference count to pass the tag - the tag being cleared is obvious from the _RET_IP_ that is recorded in the trace point. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:52 +08:00
trace_xfs_perag_get_tag(pag, _RET_IP_);
atomic_inc(&pag->pag_ref);
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
rcu_read_unlock();
return pag;
}
xfs: create traced helper to get extra perag references There are a few places in the XFS codebase where a caller has either an active or a passive reference to a perag structure and wants to give a passive reference to some other piece of code. Btree cursor creation and inode walks are good examples of this. Replace the open-coded logic with a helper to do this. The new function adds a few safeguards -- it checks that there's at least one reference to the perag structure passed in, and it records the refcount bump in the ftrace information. This makes it much easier to debug perag refcounting problems. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2023-04-12 09:59:55 +08:00
/* Get a passive reference to the given perag. */
struct xfs_perag *
xfs_perag_hold(
struct xfs_perag *pag)
{
ASSERT(atomic_read(&pag->pag_ref) > 0 ||
atomic_read(&pag->pag_active_ref) > 0);
trace_xfs_perag_hold(pag, _RET_IP_);
atomic_inc(&pag->pag_ref);
return pag;
}
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
void
xfs_perag_put(
struct xfs_perag *pag)
{
xfs: rework the perag trace points to be perag centric So that they all output the same information in the traces to make debugging refcount issues easier. This means that all the lookup/drop functions no longer need to use the full memory barrier atomic operations (atomic*_return()) so will have less overhead when tracing is off. The set/clear tag tracepoints no longer abuse the reference count to pass the tag - the tag being cleared is obvious from the _RET_IP_ that is recorded in the trace point. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:52 +08:00
trace_xfs_perag_put(pag, _RET_IP_);
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
ASSERT(atomic_read(&pag->pag_ref) > 0);
xfs: rework the perag trace points to be perag centric So that they all output the same information in the traces to make debugging refcount issues easier. This means that all the lookup/drop functions no longer need to use the full memory barrier atomic operations (atomic*_return()) so will have less overhead when tracing is off. The set/clear tag tracepoints no longer abuse the reference count to pass the tag - the tag being cleared is obvious from the _RET_IP_ that is recorded in the trace point. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:52 +08:00
atomic_dec(&pag->pag_ref);
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
}
xfs: active perag reference counting We need to be able to dynamically remove instantiated AGs from memory safely, either for shrinking the filesystem or paging AG state in and out of memory (e.g. supporting millions of AGs). This means we need to be able to safely exclude operations from accessing perags while dynamic removal is in progress. To do this, introduce the concept of active and passive references. Active references are required for high level operations that make use of an AG for a given operation (e.g. allocation) and pin the perag in memory for the duration of the operation that is operating on the perag (e.g. transaction scope). This means we can fail to get an active reference to an AG, hence callers of the new active reference API must be able to handle lookup failure gracefully. Passive references are used in low level code, where we might need to access the perag structure for the purposes of completing high level operations. For example, buffers need to use passive references because: - we need to be able to do metadata IO during operations like grow and shrink transactions where high level active references to the AG have already been blocked - buffers need to pin the perag until they are reclaimed from memory, something that high level code has no direct control over. - unused cached buffers should not prevent a shrink from being started. Hence we have active references that will form exclusion barriers for operations to be performed on an AG, and passive references that will prevent reclaim of the perag until all objects with passive references have been reclaimed themselves. This patch introduce xfs_perag_grab()/xfs_perag_rele() as the API for active AG reference functionality. We also need to convert the for_each_perag*() iterators to use active references, which will start the process of converting high level code over to using active references. Conversion of non-iterator based code to active references will be done in followup patches. Note that the implementation using reference counting is really just a development vehicle for the API to ensure we don't have any leaks in the callers. Once we need to remove perag structures from memory dyanmically, we will need a much more robust per-ag state transition mechanism for preventing new references from being taken while we wait for existing references to drain before removal from memory can occur.... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:42 +08:00
/*
* Active references for perag structures. This is for short term access to the
* per ag structures for walking trees or accessing state. If an AG is being
* shrunk or is offline, then this will fail to find that AG and return NULL
* instead.
*/
struct xfs_perag *
xfs_perag_grab(
struct xfs_mount *mp,
xfs_agnumber_t agno)
{
struct xfs_perag *pag;
rcu_read_lock();
pag = radix_tree_lookup(&mp->m_perag_tree, agno);
if (pag) {
xfs: rework the perag trace points to be perag centric So that they all output the same information in the traces to make debugging refcount issues easier. This means that all the lookup/drop functions no longer need to use the full memory barrier atomic operations (atomic*_return()) so will have less overhead when tracing is off. The set/clear tag tracepoints no longer abuse the reference count to pass the tag - the tag being cleared is obvious from the _RET_IP_ that is recorded in the trace point. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:52 +08:00
trace_xfs_perag_grab(pag, _RET_IP_);
xfs: active perag reference counting We need to be able to dynamically remove instantiated AGs from memory safely, either for shrinking the filesystem or paging AG state in and out of memory (e.g. supporting millions of AGs). This means we need to be able to safely exclude operations from accessing perags while dynamic removal is in progress. To do this, introduce the concept of active and passive references. Active references are required for high level operations that make use of an AG for a given operation (e.g. allocation) and pin the perag in memory for the duration of the operation that is operating on the perag (e.g. transaction scope). This means we can fail to get an active reference to an AG, hence callers of the new active reference API must be able to handle lookup failure gracefully. Passive references are used in low level code, where we might need to access the perag structure for the purposes of completing high level operations. For example, buffers need to use passive references because: - we need to be able to do metadata IO during operations like grow and shrink transactions where high level active references to the AG have already been blocked - buffers need to pin the perag until they are reclaimed from memory, something that high level code has no direct control over. - unused cached buffers should not prevent a shrink from being started. Hence we have active references that will form exclusion barriers for operations to be performed on an AG, and passive references that will prevent reclaim of the perag until all objects with passive references have been reclaimed themselves. This patch introduce xfs_perag_grab()/xfs_perag_rele() as the API for active AG reference functionality. We also need to convert the for_each_perag*() iterators to use active references, which will start the process of converting high level code over to using active references. Conversion of non-iterator based code to active references will be done in followup patches. Note that the implementation using reference counting is really just a development vehicle for the API to ensure we don't have any leaks in the callers. Once we need to remove perag structures from memory dyanmically, we will need a much more robust per-ag state transition mechanism for preventing new references from being taken while we wait for existing references to drain before removal from memory can occur.... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:42 +08:00
if (!atomic_inc_not_zero(&pag->pag_active_ref))
pag = NULL;
}
rcu_read_unlock();
return pag;
}
/*
* search from @first to find the next perag with the given tag set.
*/
struct xfs_perag *
xfs_perag_grab_tag(
struct xfs_mount *mp,
xfs_agnumber_t first,
int tag)
{
struct xfs_perag *pag;
int found;
rcu_read_lock();
found = radix_tree_gang_lookup_tag(&mp->m_perag_tree,
(void **)&pag, first, 1, tag);
if (found <= 0) {
rcu_read_unlock();
return NULL;
}
xfs: rework the perag trace points to be perag centric So that they all output the same information in the traces to make debugging refcount issues easier. This means that all the lookup/drop functions no longer need to use the full memory barrier atomic operations (atomic*_return()) so will have less overhead when tracing is off. The set/clear tag tracepoints no longer abuse the reference count to pass the tag - the tag being cleared is obvious from the _RET_IP_ that is recorded in the trace point. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:52 +08:00
trace_xfs_perag_grab_tag(pag, _RET_IP_);
xfs: active perag reference counting We need to be able to dynamically remove instantiated AGs from memory safely, either for shrinking the filesystem or paging AG state in and out of memory (e.g. supporting millions of AGs). This means we need to be able to safely exclude operations from accessing perags while dynamic removal is in progress. To do this, introduce the concept of active and passive references. Active references are required for high level operations that make use of an AG for a given operation (e.g. allocation) and pin the perag in memory for the duration of the operation that is operating on the perag (e.g. transaction scope). This means we can fail to get an active reference to an AG, hence callers of the new active reference API must be able to handle lookup failure gracefully. Passive references are used in low level code, where we might need to access the perag structure for the purposes of completing high level operations. For example, buffers need to use passive references because: - we need to be able to do metadata IO during operations like grow and shrink transactions where high level active references to the AG have already been blocked - buffers need to pin the perag until they are reclaimed from memory, something that high level code has no direct control over. - unused cached buffers should not prevent a shrink from being started. Hence we have active references that will form exclusion barriers for operations to be performed on an AG, and passive references that will prevent reclaim of the perag until all objects with passive references have been reclaimed themselves. This patch introduce xfs_perag_grab()/xfs_perag_rele() as the API for active AG reference functionality. We also need to convert the for_each_perag*() iterators to use active references, which will start the process of converting high level code over to using active references. Conversion of non-iterator based code to active references will be done in followup patches. Note that the implementation using reference counting is really just a development vehicle for the API to ensure we don't have any leaks in the callers. Once we need to remove perag structures from memory dyanmically, we will need a much more robust per-ag state transition mechanism for preventing new references from being taken while we wait for existing references to drain before removal from memory can occur.... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:42 +08:00
if (!atomic_inc_not_zero(&pag->pag_active_ref))
pag = NULL;
rcu_read_unlock();
return pag;
}
void
xfs_perag_rele(
struct xfs_perag *pag)
{
xfs: rework the perag trace points to be perag centric So that they all output the same information in the traces to make debugging refcount issues easier. This means that all the lookup/drop functions no longer need to use the full memory barrier atomic operations (atomic*_return()) so will have less overhead when tracing is off. The set/clear tag tracepoints no longer abuse the reference count to pass the tag - the tag being cleared is obvious from the _RET_IP_ that is recorded in the trace point. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:52 +08:00
trace_xfs_perag_rele(pag, _RET_IP_);
xfs: active perag reference counting We need to be able to dynamically remove instantiated AGs from memory safely, either for shrinking the filesystem or paging AG state in and out of memory (e.g. supporting millions of AGs). This means we need to be able to safely exclude operations from accessing perags while dynamic removal is in progress. To do this, introduce the concept of active and passive references. Active references are required for high level operations that make use of an AG for a given operation (e.g. allocation) and pin the perag in memory for the duration of the operation that is operating on the perag (e.g. transaction scope). This means we can fail to get an active reference to an AG, hence callers of the new active reference API must be able to handle lookup failure gracefully. Passive references are used in low level code, where we might need to access the perag structure for the purposes of completing high level operations. For example, buffers need to use passive references because: - we need to be able to do metadata IO during operations like grow and shrink transactions where high level active references to the AG have already been blocked - buffers need to pin the perag until they are reclaimed from memory, something that high level code has no direct control over. - unused cached buffers should not prevent a shrink from being started. Hence we have active references that will form exclusion barriers for operations to be performed on an AG, and passive references that will prevent reclaim of the perag until all objects with passive references have been reclaimed themselves. This patch introduce xfs_perag_grab()/xfs_perag_rele() as the API for active AG reference functionality. We also need to convert the for_each_perag*() iterators to use active references, which will start the process of converting high level code over to using active references. Conversion of non-iterator based code to active references will be done in followup patches. Note that the implementation using reference counting is really just a development vehicle for the API to ensure we don't have any leaks in the callers. Once we need to remove perag structures from memory dyanmically, we will need a much more robust per-ag state transition mechanism for preventing new references from being taken while we wait for existing references to drain before removal from memory can occur.... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:42 +08:00
if (atomic_dec_and_test(&pag->pag_active_ref))
wake_up(&pag->pag_active_wq);
}
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
/*
* xfs_initialize_perag_data
*
* Read in each per-ag structure so we can count up the number of
* allocated inodes, free inodes and used filesystem blocks as this
* information is no longer persistent in the superblock. Once we have
* this information, write it into the in-core superblock structure.
*/
int
xfs_initialize_perag_data(
xfs: remove xfs_perag_t Almost unused, gets rid of another typedef. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:51 +08:00
struct xfs_mount *mp,
xfs_agnumber_t agcount)
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
{
xfs: remove xfs_perag_t Almost unused, gets rid of another typedef. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:51 +08:00
xfs_agnumber_t index;
struct xfs_perag *pag;
struct xfs_sb *sbp = &mp->m_sb;
uint64_t ifree = 0;
uint64_t ialloc = 0;
uint64_t bfree = 0;
uint64_t bfreelst = 0;
uint64_t btree = 0;
uint64_t fdblocks;
int error = 0;
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
for (index = 0; index < agcount; index++) {
/*
xfs: pass perag to xfs_alloc_read_agf() xfs_alloc_read_agf() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Whilst modifying the xfs_reflink_find_shared() function definition, declare it static and remove the extern declaration as it is an internal function only these days. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:40 +08:00
* Read the AGF and AGI buffers to populate the per-ag
* structures for us.
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
*/
xfs: pass perag to xfs_ialloc_read_agi() xfs_ialloc_read_agi() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:24 +08:00
pag = xfs_perag_get(mp, index);
xfs: pass perag to xfs_alloc_read_agf() xfs_alloc_read_agf() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Whilst modifying the xfs_reflink_find_shared() function definition, declare it static and remove the extern declaration as it is an internal function only these days. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:40 +08:00
error = xfs_alloc_read_agf(pag, NULL, 0, NULL);
if (!error)
error = xfs_ialloc_read_agi(pag, NULL, NULL);
xfs: pass perag to xfs_ialloc_read_agi() xfs_ialloc_read_agi() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:24 +08:00
if (error) {
xfs_perag_put(pag);
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
return error;
xfs: pass perag to xfs_ialloc_read_agi() xfs_ialloc_read_agi() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:24 +08:00
}
xfs: kill xfs_ialloc_pagi_init() This is just a basic wrapper around xfs_ialloc_read_agi(), which can be entirely handled by xfs_ialloc_read_agi() by passing a NULL agibpp.... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:16 +08:00
xfs: move xfs_perag_get/put to xfs_ag.[ch] They are AG functions, not superblock functions, so move them to the appropriate location. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
ifree += pag->pagi_freecount;
ialloc += pag->pagi_count;
bfree += pag->pagf_freeblks;
bfreelst += pag->pagf_flcount;
btree += pag->pagf_btreeblks;
xfs_perag_put(pag);
}
fdblocks = bfree + bfreelst + btree;
/*
* If the new summary counts are obviously incorrect, fail the
* mount operation because that implies the AGFs are also corrupt.
* Clear FS_COUNTERS so that we don't unmount with a dirty log, which
* will prevent xfs_repair from fixing anything.
*/
if (fdblocks > sbp->sb_dblocks || ifree > ialloc) {
xfs_alert(mp, "AGF corruption. Please run xfs_repair.");
error = -EFSCORRUPTED;
goto out;
}
/* Overwrite incore superblock counters with just-read data */
spin_lock(&mp->m_sb_lock);
sbp->sb_ifree = ifree;
sbp->sb_icount = ialloc;
sbp->sb_fdblocks = fdblocks;
spin_unlock(&mp->m_sb_lock);
xfs_reinit_percpu_counters(mp);
out:
xfs_fs_mark_healthy(mp, XFS_SICK_FS_COUNTERS);
return error;
}
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
STATIC void
__xfs_free_perag(
struct rcu_head *head)
{
struct xfs_perag *pag = container_of(head, struct xfs_perag, rcu_head);
ASSERT(!delayed_work_pending(&pag->pag_blockgc_work));
kmem_free(pag);
}
/*
* Free up the per-ag resources associated with the mount structure.
*/
void
xfs_free_perag(
struct xfs_mount *mp)
{
struct xfs_perag *pag;
xfs_agnumber_t agno;
for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) {
spin_lock(&mp->m_perag_lock);
pag = radix_tree_delete(&mp->m_perag_tree, agno);
spin_unlock(&mp->m_perag_lock);
ASSERT(pag);
xfs: don't assert fail on perag references on teardown Not fatal, the assert is there to catch developer attention. I'm seeing this occasionally during recoveryloop testing after a shutdown, and I don't want this to stop an overnight recoveryloop run as it is currently doing. Convert the ASSERT to a XFS_IS_CORRUPT() check so it will dump a corruption report into the log and cause a test failure that way, but it won't stop the machine dead. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>
2022-05-27 08:21:04 +08:00
XFS_IS_CORRUPT(pag->pag_mount, atomic_read(&pag->pag_ref) != 0);
xfs: allow queued AG intents to drain before scrubbing When a writer thread executes a chain of log intent items, the AG header buffer locks will cycle during a transaction roll to get from one intent item to the next in a chain. Although scrub takes all AG header buffer locks, this isn't sufficient to guard against scrub checking an AG while that writer thread is in the middle of finishing a chain because there's no higher level locking primitive guarding allocation groups. When there's a collision, cross-referencing between data structures (e.g. rmapbt and refcountbt) yields false corruption events; if repair is running, this results in incorrect repairs, which is catastrophic. Fix this by adding to the perag structure the count of active intents and make scrub wait until it has both AG header buffer locks and the intent counter reaches zero. One quirk of the drain code is that deferred bmap updates also bump and drop the intent counter. A fundamental decision made during the design phase of the reverse mapping feature is that updates to the rmapbt records are always made by the same code that updates the primary metadata. In other words, callers of bmapi functions expect that the bmapi functions will queue deferred rmap updates. Some parts of the reflink code queue deferred refcount (CUI) and bmap (BUI) updates in the same head transaction, but the deferred work manager completely finishes the CUI before the BUI work is started. As a result, the CUI drops the intent count long before the deferred rmap (RUI) update even has a chance to bump the intent count. The only way to keep the intent count elevated between the CUI and RUI is for the BUI to bump the counter until the RUI has been created. A second quirk of the intent drain code is that deferred work items must increment the intent counter as soon as the work item is added to the transaction. When a BUI completes and queues an RUI, the RUI must increment the counter before the BUI decrements it. The only way to accomplish this is to require that the counter be bumped as soon as the deferred work item is created in memory. In the next patches we'll improve on this facility, but this patch provides the basic functionality. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2023-04-12 09:59:58 +08:00
xfs_defer_drain_free(&pag->pag_intents_drain);
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
cancel_delayed_work_sync(&pag->pag_blockgc_work);
xfs_buf_hash_destroy(pag);
xfs: active perag reference counting We need to be able to dynamically remove instantiated AGs from memory safely, either for shrinking the filesystem or paging AG state in and out of memory (e.g. supporting millions of AGs). This means we need to be able to safely exclude operations from accessing perags while dynamic removal is in progress. To do this, introduce the concept of active and passive references. Active references are required for high level operations that make use of an AG for a given operation (e.g. allocation) and pin the perag in memory for the duration of the operation that is operating on the perag (e.g. transaction scope). This means we can fail to get an active reference to an AG, hence callers of the new active reference API must be able to handle lookup failure gracefully. Passive references are used in low level code, where we might need to access the perag structure for the purposes of completing high level operations. For example, buffers need to use passive references because: - we need to be able to do metadata IO during operations like grow and shrink transactions where high level active references to the AG have already been blocked - buffers need to pin the perag until they are reclaimed from memory, something that high level code has no direct control over. - unused cached buffers should not prevent a shrink from being started. Hence we have active references that will form exclusion barriers for operations to be performed on an AG, and passive references that will prevent reclaim of the perag until all objects with passive references have been reclaimed themselves. This patch introduce xfs_perag_grab()/xfs_perag_rele() as the API for active AG reference functionality. We also need to convert the for_each_perag*() iterators to use active references, which will start the process of converting high level code over to using active references. Conversion of non-iterator based code to active references will be done in followup patches. Note that the implementation using reference counting is really just a development vehicle for the API to ensure we don't have any leaks in the callers. Once we need to remove perag structures from memory dyanmically, we will need a much more robust per-ag state transition mechanism for preventing new references from being taken while we wait for existing references to drain before removal from memory can occur.... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:42 +08:00
/* drop the mount's active reference */
xfs_perag_rele(pag);
XFS_IS_CORRUPT(pag->pag_mount,
atomic_read(&pag->pag_active_ref) != 0);
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
call_rcu(&pag->rcu_head, __xfs_free_perag);
}
}
xfs: Pre-calculate per-AG agbno geometry There is a lot of overhead in functions like xfs_verify_agbno() that repeatedly calculate the geometry limits of an AG. These can be pre-calculated as they are static and the verification context has a per-ag context it can quickly reference. In the case of xfs_verify_agbno(), we now always have a perag context handy, so we can store the AG length and the minimum valid block in the AG in the perag. This means we don't have to calculate it on every call and it can be inlined in callers if we move it to xfs_ag.h. Move xfs_ag_block_count() to xfs_ag.c because it's really a per-ag function and not an XFS type function. We need a little bit of rework that is specific to xfs_initialise_perag() to allow growfs to calculate the new perag sizes before we've updated the primary superblock during the grow (chicken/egg situation). Note that we leave the original xfs_verify_agbno in place in xfs_types.c as a static function as other callers in that file do not have per-ag contexts so still need to go the long way. It's been renamed to xfs_verify_agno_agbno() to indicate it takes both an agno and an agbno to differentiate it from new function. Future commits will make similar changes for other per-ag geometry validation functions. Further: $ size --totals fs/xfs/built-in.a text data bss dec hex filename before 1483006 329588 572 1813166 1baaae (TOTALS) after 1482185 329588 572 1812345 1ba779 (TOTALS) This rework reduces the binary size by ~820 bytes, indicating that much less work is being done to bounds check the agbno values against on per-ag geometry information. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:13:02 +08:00
/* Find the size of the AG, in blocks. */
static xfs_agblock_t
__xfs_ag_block_count(
struct xfs_mount *mp,
xfs_agnumber_t agno,
xfs_agnumber_t agcount,
xfs_rfsblock_t dblocks)
{
ASSERT(agno < agcount);
if (agno < agcount - 1)
return mp->m_sb.sb_agblocks;
return dblocks - (agno * mp->m_sb.sb_agblocks);
}
xfs_agblock_t
xfs_ag_block_count(
struct xfs_mount *mp,
xfs_agnumber_t agno)
{
return __xfs_ag_block_count(mp, agno, mp->m_sb.sb_agcount,
mp->m_sb.sb_dblocks);
}
xfs: Pre-calculate per-AG agino geometry There is a lot of overhead in functions like xfs_verify_agino() that repeatedly calculate the geometry limits of an AG. These can be pre-calculated as they are static and the verification context has a per-ag context it can quickly reference. In the case of xfs_verify_agino(), we now always have a perag context handy, so we can store the minimum and maximum agino values in the AG in the perag. This means we don't have to calculate it on every call and it can be inlined in callers if we move it to xfs_ag.h. xfs_verify_agino_or_null() gets the same perag treatment. xfs_agino_range() is moved to xfs_ag.c as it's not really a type function, and it's use is largely restricted as the first and last aginos can be grabbed straight from the perag in most cases. Note that we leave the original xfs_verify_agino in place in xfs_types.c as a static function as other callers in that file do not have per-ag contexts so still need to go the long way. It's been renamed to xfs_verify_agno_agino() to indicate it takes both an agno and an agino to differentiate it from new function. $ size --totals fs/xfs/built-in.a text data bss dec hex filename before 1482185 329588 572 1812345 1ba779 (TOTALS) after 1481937 329588 572 1812097 1ba681 (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:13:10 +08:00
/* Calculate the first and last possible inode number in an AG. */
static void
__xfs_agino_range(
struct xfs_mount *mp,
xfs_agblock_t eoag,
xfs_agino_t *first,
xfs_agino_t *last)
{
xfs_agblock_t bno;
/*
* Calculate the first inode, which will be in the first
* cluster-aligned block after the AGFL.
*/
bno = round_up(XFS_AGFL_BLOCK(mp) + 1, M_IGEO(mp)->cluster_align);
*first = XFS_AGB_TO_AGINO(mp, bno);
/*
* Calculate the last inode, which will be at the end of the
* last (aligned) cluster that can be allocated in the AG.
*/
bno = round_down(eoag, M_IGEO(mp)->cluster_align);
*last = XFS_AGB_TO_AGINO(mp, bno) - 1;
}
void
xfs_agino_range(
struct xfs_mount *mp,
xfs_agnumber_t agno,
xfs_agino_t *first,
xfs_agino_t *last)
{
return __xfs_agino_range(mp, xfs_ag_block_count(mp, agno), first, last);
}
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
int
xfs_initialize_perag(
struct xfs_mount *mp,
xfs_agnumber_t agcount,
xfs: Pre-calculate per-AG agbno geometry There is a lot of overhead in functions like xfs_verify_agbno() that repeatedly calculate the geometry limits of an AG. These can be pre-calculated as they are static and the verification context has a per-ag context it can quickly reference. In the case of xfs_verify_agbno(), we now always have a perag context handy, so we can store the AG length and the minimum valid block in the AG in the perag. This means we don't have to calculate it on every call and it can be inlined in callers if we move it to xfs_ag.h. Move xfs_ag_block_count() to xfs_ag.c because it's really a per-ag function and not an XFS type function. We need a little bit of rework that is specific to xfs_initialise_perag() to allow growfs to calculate the new perag sizes before we've updated the primary superblock during the grow (chicken/egg situation). Note that we leave the original xfs_verify_agbno in place in xfs_types.c as a static function as other callers in that file do not have per-ag contexts so still need to go the long way. It's been renamed to xfs_verify_agno_agbno() to indicate it takes both an agno and an agbno to differentiate it from new function. Future commits will make similar changes for other per-ag geometry validation functions. Further: $ size --totals fs/xfs/built-in.a text data bss dec hex filename before 1483006 329588 572 1813166 1baaae (TOTALS) after 1482185 329588 572 1812345 1ba779 (TOTALS) This rework reduces the binary size by ~820 bytes, indicating that much less work is being done to bounds check the agbno values against on per-ag geometry information. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:13:02 +08:00
xfs_rfsblock_t dblocks,
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
xfs_agnumber_t *maxagi)
{
struct xfs_perag *pag;
xfs_agnumber_t index;
xfs_agnumber_t first_initialised = NULLAGNUMBER;
int error;
/*
* Walk the current per-ag tree so we don't try to initialise AGs
* that already exist (growfs case). Allocate and insert all the
* AGs we don't find ready for initialisation.
*/
for (index = 0; index < agcount; index++) {
pag = xfs_perag_get(mp, index);
if (pag) {
xfs_perag_put(pag);
continue;
}
pag = kmem_zalloc(sizeof(*pag), KM_MAYFAIL);
if (!pag) {
error = -ENOMEM;
goto out_unwind_new_pags;
}
pag->pag_agno = index;
pag->pag_mount = mp;
error = radix_tree_preload(GFP_NOFS);
if (error)
goto out_free_pag;
spin_lock(&mp->m_perag_lock);
if (radix_tree_insert(&mp->m_perag_tree, index, pag)) {
WARN_ON_ONCE(1);
spin_unlock(&mp->m_perag_lock);
radix_tree_preload_end();
error = -EEXIST;
goto out_free_pag;
}
spin_unlock(&mp->m_perag_lock);
radix_tree_preload_end();
xfs: #ifdef out perag code for userspace The xfs_perag structure and initialization is unused in userspace, so #ifdef it out with __KERNEL__ to facilitate the xfsprogs sync and build. Signed-off-by: Eric Sandeen <esandeen@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-11-10 10:18:50 +08:00
#ifdef __KERNEL__
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
/* Place kernel structure only init below this point. */
spin_lock_init(&pag->pag_ici_lock);
spin_lock_init(&pag->pagb_lock);
spin_lock_init(&pag->pag_state_lock);
INIT_DELAYED_WORK(&pag->pag_blockgc_work, xfs_blockgc_worker);
INIT_RADIX_TREE(&pag->pag_ici_root, GFP_ATOMIC);
xfs: allow queued AG intents to drain before scrubbing When a writer thread executes a chain of log intent items, the AG header buffer locks will cycle during a transaction roll to get from one intent item to the next in a chain. Although scrub takes all AG header buffer locks, this isn't sufficient to guard against scrub checking an AG while that writer thread is in the middle of finishing a chain because there's no higher level locking primitive guarding allocation groups. When there's a collision, cross-referencing between data structures (e.g. rmapbt and refcountbt) yields false corruption events; if repair is running, this results in incorrect repairs, which is catastrophic. Fix this by adding to the perag structure the count of active intents and make scrub wait until it has both AG header buffer locks and the intent counter reaches zero. One quirk of the drain code is that deferred bmap updates also bump and drop the intent counter. A fundamental decision made during the design phase of the reverse mapping feature is that updates to the rmapbt records are always made by the same code that updates the primary metadata. In other words, callers of bmapi functions expect that the bmapi functions will queue deferred rmap updates. Some parts of the reflink code queue deferred refcount (CUI) and bmap (BUI) updates in the same head transaction, but the deferred work manager completely finishes the CUI before the BUI work is started. As a result, the CUI drops the intent count long before the deferred rmap (RUI) update even has a chance to bump the intent count. The only way to keep the intent count elevated between the CUI and RUI is for the BUI to bump the counter until the RUI has been created. A second quirk of the intent drain code is that deferred work items must increment the intent counter as soon as the work item is added to the transaction. When a BUI completes and queues an RUI, the RUI must increment the counter before the BUI decrements it. The only way to accomplish this is to require that the counter be bumped as soon as the deferred work item is created in memory. In the next patches we'll improve on this facility, but this patch provides the basic functionality. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2023-04-12 09:59:58 +08:00
xfs_defer_drain_init(&pag->pag_intents_drain);
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
init_waitqueue_head(&pag->pagb_wait);
xfs: active perag reference counting We need to be able to dynamically remove instantiated AGs from memory safely, either for shrinking the filesystem or paging AG state in and out of memory (e.g. supporting millions of AGs). This means we need to be able to safely exclude operations from accessing perags while dynamic removal is in progress. To do this, introduce the concept of active and passive references. Active references are required for high level operations that make use of an AG for a given operation (e.g. allocation) and pin the perag in memory for the duration of the operation that is operating on the perag (e.g. transaction scope). This means we can fail to get an active reference to an AG, hence callers of the new active reference API must be able to handle lookup failure gracefully. Passive references are used in low level code, where we might need to access the perag structure for the purposes of completing high level operations. For example, buffers need to use passive references because: - we need to be able to do metadata IO during operations like grow and shrink transactions where high level active references to the AG have already been blocked - buffers need to pin the perag until they are reclaimed from memory, something that high level code has no direct control over. - unused cached buffers should not prevent a shrink from being started. Hence we have active references that will form exclusion barriers for operations to be performed on an AG, and passive references that will prevent reclaim of the perag until all objects with passive references have been reclaimed themselves. This patch introduce xfs_perag_grab()/xfs_perag_rele() as the API for active AG reference functionality. We also need to convert the for_each_perag*() iterators to use active references, which will start the process of converting high level code over to using active references. Conversion of non-iterator based code to active references will be done in followup patches. Note that the implementation using reference counting is really just a development vehicle for the API to ensure we don't have any leaks in the callers. Once we need to remove perag structures from memory dyanmically, we will need a much more robust per-ag state transition mechanism for preventing new references from being taken while we wait for existing references to drain before removal from memory can occur.... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:42 +08:00
init_waitqueue_head(&pag->pag_active_wq);
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
pag->pagb_count = 0;
pag->pagb_tree = RB_ROOT;
xfs: #ifdef out perag code for userspace The xfs_perag structure and initialization is unused in userspace, so #ifdef it out with __KERNEL__ to facilitate the xfsprogs sync and build. Signed-off-by: Eric Sandeen <esandeen@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-11-10 10:18:50 +08:00
#endif /* __KERNEL__ */
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
error = xfs_buf_hash_init(pag);
if (error)
goto out_remove_pag;
xfs: active perag reference counting We need to be able to dynamically remove instantiated AGs from memory safely, either for shrinking the filesystem or paging AG state in and out of memory (e.g. supporting millions of AGs). This means we need to be able to safely exclude operations from accessing perags while dynamic removal is in progress. To do this, introduce the concept of active and passive references. Active references are required for high level operations that make use of an AG for a given operation (e.g. allocation) and pin the perag in memory for the duration of the operation that is operating on the perag (e.g. transaction scope). This means we can fail to get an active reference to an AG, hence callers of the new active reference API must be able to handle lookup failure gracefully. Passive references are used in low level code, where we might need to access the perag structure for the purposes of completing high level operations. For example, buffers need to use passive references because: - we need to be able to do metadata IO during operations like grow and shrink transactions where high level active references to the AG have already been blocked - buffers need to pin the perag until they are reclaimed from memory, something that high level code has no direct control over. - unused cached buffers should not prevent a shrink from being started. Hence we have active references that will form exclusion barriers for operations to be performed on an AG, and passive references that will prevent reclaim of the perag until all objects with passive references have been reclaimed themselves. This patch introduce xfs_perag_grab()/xfs_perag_rele() as the API for active AG reference functionality. We also need to convert the for_each_perag*() iterators to use active references, which will start the process of converting high level code over to using active references. Conversion of non-iterator based code to active references will be done in followup patches. Note that the implementation using reference counting is really just a development vehicle for the API to ensure we don't have any leaks in the callers. Once we need to remove perag structures from memory dyanmically, we will need a much more robust per-ag state transition mechanism for preventing new references from being taken while we wait for existing references to drain before removal from memory can occur.... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:42 +08:00
/* Active ref owned by mount indicates AG is online. */
atomic_set(&pag->pag_active_ref, 1);
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
/* first new pag is fully initialized */
if (first_initialised == NULLAGNUMBER)
first_initialised = index;
xfs: Pre-calculate per-AG agbno geometry There is a lot of overhead in functions like xfs_verify_agbno() that repeatedly calculate the geometry limits of an AG. These can be pre-calculated as they are static and the verification context has a per-ag context it can quickly reference. In the case of xfs_verify_agbno(), we now always have a perag context handy, so we can store the AG length and the minimum valid block in the AG in the perag. This means we don't have to calculate it on every call and it can be inlined in callers if we move it to xfs_ag.h. Move xfs_ag_block_count() to xfs_ag.c because it's really a per-ag function and not an XFS type function. We need a little bit of rework that is specific to xfs_initialise_perag() to allow growfs to calculate the new perag sizes before we've updated the primary superblock during the grow (chicken/egg situation). Note that we leave the original xfs_verify_agbno in place in xfs_types.c as a static function as other callers in that file do not have per-ag contexts so still need to go the long way. It's been renamed to xfs_verify_agno_agbno() to indicate it takes both an agno and an agbno to differentiate it from new function. Future commits will make similar changes for other per-ag geometry validation functions. Further: $ size --totals fs/xfs/built-in.a text data bss dec hex filename before 1483006 329588 572 1813166 1baaae (TOTALS) after 1482185 329588 572 1812345 1ba779 (TOTALS) This rework reduces the binary size by ~820 bytes, indicating that much less work is being done to bounds check the agbno values against on per-ag geometry information. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:13:02 +08:00
/*
* Pre-calculated geometry
*/
pag->block_count = __xfs_ag_block_count(mp, index, agcount,
dblocks);
pag->min_block = XFS_AGFL_BLOCK(mp);
xfs: Pre-calculate per-AG agino geometry There is a lot of overhead in functions like xfs_verify_agino() that repeatedly calculate the geometry limits of an AG. These can be pre-calculated as they are static and the verification context has a per-ag context it can quickly reference. In the case of xfs_verify_agino(), we now always have a perag context handy, so we can store the minimum and maximum agino values in the AG in the perag. This means we don't have to calculate it on every call and it can be inlined in callers if we move it to xfs_ag.h. xfs_verify_agino_or_null() gets the same perag treatment. xfs_agino_range() is moved to xfs_ag.c as it's not really a type function, and it's use is largely restricted as the first and last aginos can be grabbed straight from the perag in most cases. Note that we leave the original xfs_verify_agino in place in xfs_types.c as a static function as other callers in that file do not have per-ag contexts so still need to go the long way. It's been renamed to xfs_verify_agno_agino() to indicate it takes both an agno and an agino to differentiate it from new function. $ size --totals fs/xfs/built-in.a text data bss dec hex filename before 1482185 329588 572 1812345 1ba779 (TOTALS) after 1481937 329588 572 1812097 1ba681 (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:13:10 +08:00
__xfs_agino_range(mp, pag->block_count, &pag->agino_min,
&pag->agino_max);
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
}
index = xfs_set_inode_alloc(mp, agcount);
if (maxagi)
*maxagi = index;
mp->m_ag_prealloc_blocks = xfs_prealloc_blocks(mp);
return 0;
out_remove_pag:
xfs: allow queued AG intents to drain before scrubbing When a writer thread executes a chain of log intent items, the AG header buffer locks will cycle during a transaction roll to get from one intent item to the next in a chain. Although scrub takes all AG header buffer locks, this isn't sufficient to guard against scrub checking an AG while that writer thread is in the middle of finishing a chain because there's no higher level locking primitive guarding allocation groups. When there's a collision, cross-referencing between data structures (e.g. rmapbt and refcountbt) yields false corruption events; if repair is running, this results in incorrect repairs, which is catastrophic. Fix this by adding to the perag structure the count of active intents and make scrub wait until it has both AG header buffer locks and the intent counter reaches zero. One quirk of the drain code is that deferred bmap updates also bump and drop the intent counter. A fundamental decision made during the design phase of the reverse mapping feature is that updates to the rmapbt records are always made by the same code that updates the primary metadata. In other words, callers of bmapi functions expect that the bmapi functions will queue deferred rmap updates. Some parts of the reflink code queue deferred refcount (CUI) and bmap (BUI) updates in the same head transaction, but the deferred work manager completely finishes the CUI before the BUI work is started. As a result, the CUI drops the intent count long before the deferred rmap (RUI) update even has a chance to bump the intent count. The only way to keep the intent count elevated between the CUI and RUI is for the BUI to bump the counter until the RUI has been created. A second quirk of the intent drain code is that deferred work items must increment the intent counter as soon as the work item is added to the transaction. When a BUI completes and queues an RUI, the RUI must increment the counter before the BUI decrements it. The only way to accomplish this is to require that the counter be bumped as soon as the deferred work item is created in memory. In the next patches we'll improve on this facility, but this patch provides the basic functionality. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2023-04-12 09:59:58 +08:00
xfs_defer_drain_free(&pag->pag_intents_drain);
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
radix_tree_delete(&mp->m_perag_tree, index);
out_free_pag:
kmem_free(pag);
out_unwind_new_pags:
/* unwind any prior newly initialized pags */
for (index = first_initialised; index < agcount; index++) {
pag = radix_tree_delete(&mp->m_perag_tree, index);
if (!pag)
break;
xfs_buf_hash_destroy(pag);
xfs: allow queued AG intents to drain before scrubbing When a writer thread executes a chain of log intent items, the AG header buffer locks will cycle during a transaction roll to get from one intent item to the next in a chain. Although scrub takes all AG header buffer locks, this isn't sufficient to guard against scrub checking an AG while that writer thread is in the middle of finishing a chain because there's no higher level locking primitive guarding allocation groups. When there's a collision, cross-referencing between data structures (e.g. rmapbt and refcountbt) yields false corruption events; if repair is running, this results in incorrect repairs, which is catastrophic. Fix this by adding to the perag structure the count of active intents and make scrub wait until it has both AG header buffer locks and the intent counter reaches zero. One quirk of the drain code is that deferred bmap updates also bump and drop the intent counter. A fundamental decision made during the design phase of the reverse mapping feature is that updates to the rmapbt records are always made by the same code that updates the primary metadata. In other words, callers of bmapi functions expect that the bmapi functions will queue deferred rmap updates. Some parts of the reflink code queue deferred refcount (CUI) and bmap (BUI) updates in the same head transaction, but the deferred work manager completely finishes the CUI before the BUI work is started. As a result, the CUI drops the intent count long before the deferred rmap (RUI) update even has a chance to bump the intent count. The only way to keep the intent count elevated between the CUI and RUI is for the BUI to bump the counter until the RUI has been created. A second quirk of the intent drain code is that deferred work items must increment the intent counter as soon as the work item is added to the transaction. When a BUI completes and queues an RUI, the RUI must increment the counter before the BUI decrements it. The only way to accomplish this is to require that the counter be bumped as soon as the deferred work item is created in memory. In the next patches we'll improve on this facility, but this patch provides the basic functionality. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2023-04-12 09:59:58 +08:00
xfs_defer_drain_free(&pag->pag_intents_drain);
xfs: move perag structure and setup to libxfs/xfs_ag.[ch] Move the xfs_perag infrastructure to the libxfs files that contain all the per AG infrastructure. This helps set up for passing perags around all the code instead of bare agnos with minimal extra includes for existing files. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-06-02 08:48:24 +08:00
kmem_free(pag);
}
return error;
}
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
xfs: make xfs_buf_get_uncached return an error code Convert xfs_buf_get_uncached() to return numeric error codes like most everywhere else in xfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2020-01-24 09:01:17 +08:00
static int
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
xfs_get_aghdr_buf(
struct xfs_mount *mp,
xfs_daddr_t blkno,
size_t numblks,
xfs: make xfs_buf_get_uncached return an error code Convert xfs_buf_get_uncached() to return numeric error codes like most everywhere else in xfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2020-01-24 09:01:17 +08:00
struct xfs_buf **bpp,
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
const struct xfs_buf_ops *ops)
{
struct xfs_buf *bp;
xfs: make xfs_buf_get_uncached return an error code Convert xfs_buf_get_uncached() to return numeric error codes like most everywhere else in xfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2020-01-24 09:01:17 +08:00
int error;
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
xfs: make xfs_buf_get_uncached return an error code Convert xfs_buf_get_uncached() to return numeric error codes like most everywhere else in xfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2020-01-24 09:01:17 +08:00
error = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, 0, &bp);
if (error)
return error;
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
bp->b_maps[0].bm_bn = blkno;
bp->b_ops = ops;
xfs: make xfs_buf_get_uncached return an error code Convert xfs_buf_get_uncached() to return numeric error codes like most everywhere else in xfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2020-01-24 09:01:17 +08:00
*bpp = bp;
return 0;
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
}
/*
* Generic btree root block init function
*/
static void
xfs_btroot_init(
struct xfs_mount *mp,
struct xfs_buf *bp,
struct aghdr_init_data *id)
{
xfs: remove unused flag arguments There are several functions which take a flag argument that is only ever passed as "0," so remove these arguments. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Bill O'Donnell <billodo@redhat.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-06-13 00:00:00 +08:00
xfs_btree_init_block(mp, bp, id->type, 0, 0, id->agno);
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
}
xfs: refactor free space btree record initialization Refactor the code that populates the free space btrees of a new AG so that we can avoid code duplication once things start getting complicated. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
/* Finish initializing a free space btree. */
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
static void
xfs: refactor free space btree record initialization Refactor the code that populates the free space btrees of a new AG so that we can avoid code duplication once things start getting complicated. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
xfs_freesp_init_recs(
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
struct xfs_mount *mp,
struct xfs_buf *bp,
struct aghdr_init_data *id)
{
struct xfs_alloc_rec *arec;
xfs: account for log space when formatting new AGs When we're writing out a fresh new AG, make sure that we don't list an internal log as free and that we create the rmap for the region. growfs never does this, but we will need it when we hook up mkfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1);
arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks);
xfs: account for log space when formatting new AGs When we're writing out a fresh new AG, make sure that we don't list an internal log as free and that we create the rmap for the region. growfs never does this, but we will need it when we hook up mkfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
xfs: make is_log_ag() a first class helper We check if an ag contains the log in many places, so make this a first class XFS helper by lifting it to fs/xfs/libxfs/xfs_ag.h and renaming it xfs_ag_contains_log(). The convert all the places that check if the AG contains the log to use this helper. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:13:21 +08:00
if (xfs_ag_contains_log(mp, id->agno)) {
xfs: account for log space when formatting new AGs When we're writing out a fresh new AG, make sure that we don't list an internal log as free and that we create the rmap for the region. growfs never does this, but we will need it when we hook up mkfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
struct xfs_alloc_rec *nrec;
xfs_agblock_t start = XFS_FSB_TO_AGBNO(mp,
mp->m_sb.sb_logstart);
ASSERT(start >= mp->m_ag_prealloc_blocks);
if (start != mp->m_ag_prealloc_blocks) {
/*
xfs: set bnobt/cntbt numrecs correctly when formatting new AGs Through generic/300, I discovered that mkfs.xfs creates corrupt filesystems when given these parameters: # mkfs.xfs -d size=512M /dev/sda -f -d su=128k,sw=4 --unsupported Filesystems formatted with --unsupported are not supported!! meta-data=/dev/sda isize=512 agcount=8, agsize=16352 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=1, sparse=1, rmapbt=1 = reflink=1 bigtime=1 inobtcount=1 nrext64=1 data = bsize=4096 blocks=130816, imaxpct=25 = sunit=32 swidth=128 blks naming =version 2 bsize=4096 ascii-ci=0, ftype=1 log =internal log bsize=4096 blocks=8192, version=2 = sectsz=512 sunit=32 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 = rgcount=0 rgsize=0 blks Discarding blocks...Done. # xfs_repair -n /dev/sda Phase 1 - find and verify superblock... - reporting progress in intervals of 15 minutes Phase 2 - using internal log - zero log... - 16:30:50: zeroing log - 16320 of 16320 blocks done - scan filesystem freespace and inode maps... agf_freeblks 25, counted 0 in ag 4 sb_fdblocks 8823, counted 8798 The root cause of this problem is the numrecs handling in xfs_freesp_init_recs, which is used to initialize a new AG. Prior to calling the function, we set up the new bnobt block with numrecs == 1 and rely on _freesp_init_recs to format that new record. If the last record created has a blockcount of zero, then it sets numrecs = 0. That last bit isn't correct if the AG contains the log, the start of the log is not immediately after the initial blocks due to stripe alignment, and the end of the log is perfectly aligned with the end of the AG. For this case, we actually formatted a single bnobt record to handle the free space before the start of the (stripe aligned) log, and incremented arec to try to format a second record. That second record turned out to be unnecessary, so what we really want is to leave numrecs at 1. The numrecs handling itself is overly complicated because a different function sets numrecs == 1. Change the bnobt creation code to start with numrecs set to zero and only increment it after successfully formatting a free space extent into the btree block. Fixes: f327a00745ff ("xfs: account for log space when formatting new AGs") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2023-05-02 07:14:36 +08:00
* Modify first record to pad stripe align of log and
* bump the record count.
xfs: account for log space when formatting new AGs When we're writing out a fresh new AG, make sure that we don't list an internal log as free and that we create the rmap for the region. growfs never does this, but we will need it when we hook up mkfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
*/
arec->ar_blockcount = cpu_to_be32(start -
mp->m_ag_prealloc_blocks);
xfs: set bnobt/cntbt numrecs correctly when formatting new AGs Through generic/300, I discovered that mkfs.xfs creates corrupt filesystems when given these parameters: # mkfs.xfs -d size=512M /dev/sda -f -d su=128k,sw=4 --unsupported Filesystems formatted with --unsupported are not supported!! meta-data=/dev/sda isize=512 agcount=8, agsize=16352 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=1, sparse=1, rmapbt=1 = reflink=1 bigtime=1 inobtcount=1 nrext64=1 data = bsize=4096 blocks=130816, imaxpct=25 = sunit=32 swidth=128 blks naming =version 2 bsize=4096 ascii-ci=0, ftype=1 log =internal log bsize=4096 blocks=8192, version=2 = sectsz=512 sunit=32 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 = rgcount=0 rgsize=0 blks Discarding blocks...Done. # xfs_repair -n /dev/sda Phase 1 - find and verify superblock... - reporting progress in intervals of 15 minutes Phase 2 - using internal log - zero log... - 16:30:50: zeroing log - 16320 of 16320 blocks done - scan filesystem freespace and inode maps... agf_freeblks 25, counted 0 in ag 4 sb_fdblocks 8823, counted 8798 The root cause of this problem is the numrecs handling in xfs_freesp_init_recs, which is used to initialize a new AG. Prior to calling the function, we set up the new bnobt block with numrecs == 1 and rely on _freesp_init_recs to format that new record. If the last record created has a blockcount of zero, then it sets numrecs = 0. That last bit isn't correct if the AG contains the log, the start of the log is not immediately after the initial blocks due to stripe alignment, and the end of the log is perfectly aligned with the end of the AG. For this case, we actually formatted a single bnobt record to handle the free space before the start of the (stripe aligned) log, and incremented arec to try to format a second record. That second record turned out to be unnecessary, so what we really want is to leave numrecs at 1. The numrecs handling itself is overly complicated because a different function sets numrecs == 1. Change the bnobt creation code to start with numrecs set to zero and only increment it after successfully formatting a free space extent into the btree block. Fixes: f327a00745ff ("xfs: account for log space when formatting new AGs") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2023-05-02 07:14:36 +08:00
be16_add_cpu(&block->bb_numrecs, 1);
xfs: account for log space when formatting new AGs When we're writing out a fresh new AG, make sure that we don't list an internal log as free and that we create the rmap for the region. growfs never does this, but we will need it when we hook up mkfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
nrec = arec + 1;
/*
* Insert second record at start of internal log
* which then gets trimmed.
*/
nrec->ar_startblock = cpu_to_be32(
be32_to_cpu(arec->ar_startblock) +
be32_to_cpu(arec->ar_blockcount));
arec = nrec;
}
/*
* Change record start to after the internal log
*/
be32_add_cpu(&arec->ar_startblock, mp->m_sb.sb_logblocks);
}
/*
xfs: set bnobt/cntbt numrecs correctly when formatting new AGs Through generic/300, I discovered that mkfs.xfs creates corrupt filesystems when given these parameters: # mkfs.xfs -d size=512M /dev/sda -f -d su=128k,sw=4 --unsupported Filesystems formatted with --unsupported are not supported!! meta-data=/dev/sda isize=512 agcount=8, agsize=16352 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=1, sparse=1, rmapbt=1 = reflink=1 bigtime=1 inobtcount=1 nrext64=1 data = bsize=4096 blocks=130816, imaxpct=25 = sunit=32 swidth=128 blks naming =version 2 bsize=4096 ascii-ci=0, ftype=1 log =internal log bsize=4096 blocks=8192, version=2 = sectsz=512 sunit=32 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 = rgcount=0 rgsize=0 blks Discarding blocks...Done. # xfs_repair -n /dev/sda Phase 1 - find and verify superblock... - reporting progress in intervals of 15 minutes Phase 2 - using internal log - zero log... - 16:30:50: zeroing log - 16320 of 16320 blocks done - scan filesystem freespace and inode maps... agf_freeblks 25, counted 0 in ag 4 sb_fdblocks 8823, counted 8798 The root cause of this problem is the numrecs handling in xfs_freesp_init_recs, which is used to initialize a new AG. Prior to calling the function, we set up the new bnobt block with numrecs == 1 and rely on _freesp_init_recs to format that new record. If the last record created has a blockcount of zero, then it sets numrecs = 0. That last bit isn't correct if the AG contains the log, the start of the log is not immediately after the initial blocks due to stripe alignment, and the end of the log is perfectly aligned with the end of the AG. For this case, we actually formatted a single bnobt record to handle the free space before the start of the (stripe aligned) log, and incremented arec to try to format a second record. That second record turned out to be unnecessary, so what we really want is to leave numrecs at 1. The numrecs handling itself is overly complicated because a different function sets numrecs == 1. Change the bnobt creation code to start with numrecs set to zero and only increment it after successfully formatting a free space extent into the btree block. Fixes: f327a00745ff ("xfs: account for log space when formatting new AGs") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2023-05-02 07:14:36 +08:00
* Calculate the block count of this record; if it is nonzero,
* increment the record count.
xfs: account for log space when formatting new AGs When we're writing out a fresh new AG, make sure that we don't list an internal log as free and that we create the rmap for the region. growfs never does this, but we will need it when we hook up mkfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
*/
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
arec->ar_blockcount = cpu_to_be32(id->agsize -
be32_to_cpu(arec->ar_startblock));
xfs: set bnobt/cntbt numrecs correctly when formatting new AGs Through generic/300, I discovered that mkfs.xfs creates corrupt filesystems when given these parameters: # mkfs.xfs -d size=512M /dev/sda -f -d su=128k,sw=4 --unsupported Filesystems formatted with --unsupported are not supported!! meta-data=/dev/sda isize=512 agcount=8, agsize=16352 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=1, sparse=1, rmapbt=1 = reflink=1 bigtime=1 inobtcount=1 nrext64=1 data = bsize=4096 blocks=130816, imaxpct=25 = sunit=32 swidth=128 blks naming =version 2 bsize=4096 ascii-ci=0, ftype=1 log =internal log bsize=4096 blocks=8192, version=2 = sectsz=512 sunit=32 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 = rgcount=0 rgsize=0 blks Discarding blocks...Done. # xfs_repair -n /dev/sda Phase 1 - find and verify superblock... - reporting progress in intervals of 15 minutes Phase 2 - using internal log - zero log... - 16:30:50: zeroing log - 16320 of 16320 blocks done - scan filesystem freespace and inode maps... agf_freeblks 25, counted 0 in ag 4 sb_fdblocks 8823, counted 8798 The root cause of this problem is the numrecs handling in xfs_freesp_init_recs, which is used to initialize a new AG. Prior to calling the function, we set up the new bnobt block with numrecs == 1 and rely on _freesp_init_recs to format that new record. If the last record created has a blockcount of zero, then it sets numrecs = 0. That last bit isn't correct if the AG contains the log, the start of the log is not immediately after the initial blocks due to stripe alignment, and the end of the log is perfectly aligned with the end of the AG. For this case, we actually formatted a single bnobt record to handle the free space before the start of the (stripe aligned) log, and incremented arec to try to format a second record. That second record turned out to be unnecessary, so what we really want is to leave numrecs at 1. The numrecs handling itself is overly complicated because a different function sets numrecs == 1. Change the bnobt creation code to start with numrecs set to zero and only increment it after successfully formatting a free space extent into the btree block. Fixes: f327a00745ff ("xfs: account for log space when formatting new AGs") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2023-05-02 07:14:36 +08:00
if (arec->ar_blockcount)
be16_add_cpu(&block->bb_numrecs, 1);
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
}
xfs: refactor free space btree record initialization Refactor the code that populates the free space btrees of a new AG so that we can avoid code duplication once things start getting complicated. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
/*
* Alloc btree root block init functions
*/
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
static void
xfs: refactor free space btree record initialization Refactor the code that populates the free space btrees of a new AG so that we can avoid code duplication once things start getting complicated. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
xfs_bnoroot_init(
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
struct xfs_mount *mp,
struct xfs_buf *bp,
struct aghdr_init_data *id)
{
xfs: set bnobt/cntbt numrecs correctly when formatting new AGs Through generic/300, I discovered that mkfs.xfs creates corrupt filesystems when given these parameters: # mkfs.xfs -d size=512M /dev/sda -f -d su=128k,sw=4 --unsupported Filesystems formatted with --unsupported are not supported!! meta-data=/dev/sda isize=512 agcount=8, agsize=16352 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=1, sparse=1, rmapbt=1 = reflink=1 bigtime=1 inobtcount=1 nrext64=1 data = bsize=4096 blocks=130816, imaxpct=25 = sunit=32 swidth=128 blks naming =version 2 bsize=4096 ascii-ci=0, ftype=1 log =internal log bsize=4096 blocks=8192, version=2 = sectsz=512 sunit=32 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 = rgcount=0 rgsize=0 blks Discarding blocks...Done. # xfs_repair -n /dev/sda Phase 1 - find and verify superblock... - reporting progress in intervals of 15 minutes Phase 2 - using internal log - zero log... - 16:30:50: zeroing log - 16320 of 16320 blocks done - scan filesystem freespace and inode maps... agf_freeblks 25, counted 0 in ag 4 sb_fdblocks 8823, counted 8798 The root cause of this problem is the numrecs handling in xfs_freesp_init_recs, which is used to initialize a new AG. Prior to calling the function, we set up the new bnobt block with numrecs == 1 and rely on _freesp_init_recs to format that new record. If the last record created has a blockcount of zero, then it sets numrecs = 0. That last bit isn't correct if the AG contains the log, the start of the log is not immediately after the initial blocks due to stripe alignment, and the end of the log is perfectly aligned with the end of the AG. For this case, we actually formatted a single bnobt record to handle the free space before the start of the (stripe aligned) log, and incremented arec to try to format a second record. That second record turned out to be unnecessary, so what we really want is to leave numrecs at 1. The numrecs handling itself is overly complicated because a different function sets numrecs == 1. Change the bnobt creation code to start with numrecs set to zero and only increment it after successfully formatting a free space extent into the btree block. Fixes: f327a00745ff ("xfs: account for log space when formatting new AGs") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2023-05-02 07:14:36 +08:00
xfs_btree_init_block(mp, bp, XFS_BTNUM_BNO, 0, 0, id->agno);
xfs: refactor free space btree record initialization Refactor the code that populates the free space btrees of a new AG so that we can avoid code duplication once things start getting complicated. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
xfs_freesp_init_recs(mp, bp, id);
}
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
xfs: refactor free space btree record initialization Refactor the code that populates the free space btrees of a new AG so that we can avoid code duplication once things start getting complicated. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
static void
xfs_cntroot_init(
struct xfs_mount *mp,
struct xfs_buf *bp,
struct aghdr_init_data *id)
{
xfs: set bnobt/cntbt numrecs correctly when formatting new AGs Through generic/300, I discovered that mkfs.xfs creates corrupt filesystems when given these parameters: # mkfs.xfs -d size=512M /dev/sda -f -d su=128k,sw=4 --unsupported Filesystems formatted with --unsupported are not supported!! meta-data=/dev/sda isize=512 agcount=8, agsize=16352 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=1, sparse=1, rmapbt=1 = reflink=1 bigtime=1 inobtcount=1 nrext64=1 data = bsize=4096 blocks=130816, imaxpct=25 = sunit=32 swidth=128 blks naming =version 2 bsize=4096 ascii-ci=0, ftype=1 log =internal log bsize=4096 blocks=8192, version=2 = sectsz=512 sunit=32 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 = rgcount=0 rgsize=0 blks Discarding blocks...Done. # xfs_repair -n /dev/sda Phase 1 - find and verify superblock... - reporting progress in intervals of 15 minutes Phase 2 - using internal log - zero log... - 16:30:50: zeroing log - 16320 of 16320 blocks done - scan filesystem freespace and inode maps... agf_freeblks 25, counted 0 in ag 4 sb_fdblocks 8823, counted 8798 The root cause of this problem is the numrecs handling in xfs_freesp_init_recs, which is used to initialize a new AG. Prior to calling the function, we set up the new bnobt block with numrecs == 1 and rely on _freesp_init_recs to format that new record. If the last record created has a blockcount of zero, then it sets numrecs = 0. That last bit isn't correct if the AG contains the log, the start of the log is not immediately after the initial blocks due to stripe alignment, and the end of the log is perfectly aligned with the end of the AG. For this case, we actually formatted a single bnobt record to handle the free space before the start of the (stripe aligned) log, and incremented arec to try to format a second record. That second record turned out to be unnecessary, so what we really want is to leave numrecs at 1. The numrecs handling itself is overly complicated because a different function sets numrecs == 1. Change the bnobt creation code to start with numrecs set to zero and only increment it after successfully formatting a free space extent into the btree block. Fixes: f327a00745ff ("xfs: account for log space when formatting new AGs") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2023-05-02 07:14:36 +08:00
xfs_btree_init_block(mp, bp, XFS_BTNUM_CNT, 0, 0, id->agno);
xfs: refactor free space btree record initialization Refactor the code that populates the free space btrees of a new AG so that we can avoid code duplication once things start getting complicated. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
xfs_freesp_init_recs(mp, bp, id);
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
}
/*
* Reverse map root block init
*/
static void
xfs_rmaproot_init(
struct xfs_mount *mp,
struct xfs_buf *bp,
struct aghdr_init_data *id)
{
struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
struct xfs_rmap_rec *rrec;
xfs: remove unused flag arguments There are several functions which take a flag argument that is only ever passed as "0," so remove these arguments. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Bill O'Donnell <billodo@redhat.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-06-13 00:00:00 +08:00
xfs_btree_init_block(mp, bp, XFS_BTNUM_RMAP, 0, 4, id->agno);
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
/*
* mark the AG header regions as static metadata The BNO
* btree block is the first block after the headers, so
* it's location defines the size of region the static
* metadata consumes.
*
* Note: unlike mkfs, we never have to account for log
* space when growing the data regions
*/
rrec = XFS_RMAP_REC_ADDR(block, 1);
rrec->rm_startblock = 0;
rrec->rm_blockcount = cpu_to_be32(XFS_BNO_BLOCK(mp));
rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_FS);
rrec->rm_offset = 0;
/* account freespace btree root blocks */
rrec = XFS_RMAP_REC_ADDR(block, 2);
rrec->rm_startblock = cpu_to_be32(XFS_BNO_BLOCK(mp));
rrec->rm_blockcount = cpu_to_be32(2);
rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG);
rrec->rm_offset = 0;
/* account inode btree root blocks */
rrec = XFS_RMAP_REC_ADDR(block, 3);
rrec->rm_startblock = cpu_to_be32(XFS_IBT_BLOCK(mp));
rrec->rm_blockcount = cpu_to_be32(XFS_RMAP_BLOCK(mp) -
XFS_IBT_BLOCK(mp));
rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_INOBT);
rrec->rm_offset = 0;
/* account for rmap btree root */
rrec = XFS_RMAP_REC_ADDR(block, 4);
rrec->rm_startblock = cpu_to_be32(XFS_RMAP_BLOCK(mp));
rrec->rm_blockcount = cpu_to_be32(1);
rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG);
rrec->rm_offset = 0;
/* account for refc btree root */
xfs: replace xfs_sb_version checks with feature flag checks Convert the xfs_sb_version_hasfoo() to checks against mp->m_features. Checks of the superblock itself during disk operations (e.g. in the read/write verifiers and the to/from disk formatters) are not converted - they operate purely on the superblock state. Everything else should use the mount features. Large parts of this conversion were done with sed with commands like this: for f in `git grep -l xfs_sb_version_has fs/xfs/*.c`; do sed -i -e 's/xfs_sb_version_has\(.*\)(&\(.*\)->m_sb)/xfs_has_\1(\2)/' $f done With manual cleanups for things like "xfs_has_extflgbit" and other little inconsistencies in naming. The result is ia lot less typing to check features and an XFS binary size reduced by a bit over 3kB: $ size -t fs/xfs/built-in.a text data bss dec hex filenam before 1130866 311352 484 1442702 16038e (TOTALS) after 1127727 311352 484 1439563 15f74b (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-19 09:46:37 +08:00
if (xfs_has_reflink(mp)) {
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
rrec = XFS_RMAP_REC_ADDR(block, 5);
rrec->rm_startblock = cpu_to_be32(xfs_refc_block(mp));
rrec->rm_blockcount = cpu_to_be32(1);
rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_REFC);
rrec->rm_offset = 0;
be16_add_cpu(&block->bb_numrecs, 1);
}
xfs: account for log space when formatting new AGs When we're writing out a fresh new AG, make sure that we don't list an internal log as free and that we create the rmap for the region. growfs never does this, but we will need it when we hook up mkfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
/* account for the log space */
xfs: make is_log_ag() a first class helper We check if an ag contains the log in many places, so make this a first class XFS helper by lifting it to fs/xfs/libxfs/xfs_ag.h and renaming it xfs_ag_contains_log(). The convert all the places that check if the AG contains the log to use this helper. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:13:21 +08:00
if (xfs_ag_contains_log(mp, id->agno)) {
xfs: account for log space when formatting new AGs When we're writing out a fresh new AG, make sure that we don't list an internal log as free and that we create the rmap for the region. growfs never does this, but we will need it when we hook up mkfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
rrec = XFS_RMAP_REC_ADDR(block,
be16_to_cpu(block->bb_numrecs) + 1);
rrec->rm_startblock = cpu_to_be32(
XFS_FSB_TO_AGBNO(mp, mp->m_sb.sb_logstart));
rrec->rm_blockcount = cpu_to_be32(mp->m_sb.sb_logblocks);
rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_LOG);
rrec->rm_offset = 0;
be16_add_cpu(&block->bb_numrecs, 1);
}
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
}
/*
* Initialise new secondary superblocks with the pre-grow geometry, but mark
* them as "in progress" so we know they haven't yet been activated. This will
* get cleared when the update with the new geometry information is done after
* changes to the primary are committed. This isn't strictly necessary, but we
* get it for free with the delayed buffer write lists and it means we can tell
* if a grow operation didn't complete properly after the fact.
*/
static void
xfs_sbblock_init(
struct xfs_mount *mp,
struct xfs_buf *bp,
struct aghdr_init_data *id)
{
xfs: remove XFS_BUF_TO_SBP Just dereference bp->b_addr directly and make the code a little simpler and more clear. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2020-03-10 23:57:30 +08:00
struct xfs_dsb *dsb = bp->b_addr;
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
xfs_sb_to_disk(dsb, &mp->m_sb);
dsb->sb_inprogress = 1;
}
static void
xfs_agfblock_init(
struct xfs_mount *mp,
struct xfs_buf *bp,
struct aghdr_init_data *id)
{
xfs: remove XFS_BUF_TO_AGF Just dereference bp->b_addr directly and make the code a little simpler and more clear. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2020-03-10 23:57:29 +08:00
struct xfs_agf *agf = bp->b_addr;
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
xfs_extlen_t tmpsize;
agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC);
agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION);
agf->agf_seqno = cpu_to_be32(id->agno);
agf->agf_length = cpu_to_be32(id->agsize);
agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp));
agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp));
agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1);
agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1);
xfs: replace xfs_sb_version checks with feature flag checks Convert the xfs_sb_version_hasfoo() to checks against mp->m_features. Checks of the superblock itself during disk operations (e.g. in the read/write verifiers and the to/from disk formatters) are not converted - they operate purely on the superblock state. Everything else should use the mount features. Large parts of this conversion were done with sed with commands like this: for f in `git grep -l xfs_sb_version_has fs/xfs/*.c`; do sed -i -e 's/xfs_sb_version_has\(.*\)(&\(.*\)->m_sb)/xfs_has_\1(\2)/' $f done With manual cleanups for things like "xfs_has_extflgbit" and other little inconsistencies in naming. The result is ia lot less typing to check features and an XFS binary size reduced by a bit over 3kB: $ size -t fs/xfs/built-in.a text data bss dec hex filenam before 1130866 311352 484 1442702 16038e (TOTALS) after 1127727 311352 484 1439563 15f74b (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-19 09:46:37 +08:00
if (xfs_has_rmapbt(mp)) {
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
agf->agf_roots[XFS_BTNUM_RMAPi] =
cpu_to_be32(XFS_RMAP_BLOCK(mp));
agf->agf_levels[XFS_BTNUM_RMAPi] = cpu_to_be32(1);
agf->agf_rmap_blocks = cpu_to_be32(1);
}
agf->agf_flfirst = cpu_to_be32(1);
agf->agf_fllast = 0;
agf->agf_flcount = 0;
tmpsize = id->agsize - mp->m_ag_prealloc_blocks;
agf->agf_freeblks = cpu_to_be32(tmpsize);
agf->agf_longest = cpu_to_be32(tmpsize);
xfs: replace xfs_sb_version checks with feature flag checks Convert the xfs_sb_version_hasfoo() to checks against mp->m_features. Checks of the superblock itself during disk operations (e.g. in the read/write verifiers and the to/from disk formatters) are not converted - they operate purely on the superblock state. Everything else should use the mount features. Large parts of this conversion were done with sed with commands like this: for f in `git grep -l xfs_sb_version_has fs/xfs/*.c`; do sed -i -e 's/xfs_sb_version_has\(.*\)(&\(.*\)->m_sb)/xfs_has_\1(\2)/' $f done With manual cleanups for things like "xfs_has_extflgbit" and other little inconsistencies in naming. The result is ia lot less typing to check features and an XFS binary size reduced by a bit over 3kB: $ size -t fs/xfs/built-in.a text data bss dec hex filenam before 1130866 311352 484 1442702 16038e (TOTALS) after 1127727 311352 484 1439563 15f74b (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-19 09:46:37 +08:00
if (xfs_has_crc(mp))
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid);
xfs: replace xfs_sb_version checks with feature flag checks Convert the xfs_sb_version_hasfoo() to checks against mp->m_features. Checks of the superblock itself during disk operations (e.g. in the read/write verifiers and the to/from disk formatters) are not converted - they operate purely on the superblock state. Everything else should use the mount features. Large parts of this conversion were done with sed with commands like this: for f in `git grep -l xfs_sb_version_has fs/xfs/*.c`; do sed -i -e 's/xfs_sb_version_has\(.*\)(&\(.*\)->m_sb)/xfs_has_\1(\2)/' $f done With manual cleanups for things like "xfs_has_extflgbit" and other little inconsistencies in naming. The result is ia lot less typing to check features and an XFS binary size reduced by a bit over 3kB: $ size -t fs/xfs/built-in.a text data bss dec hex filenam before 1130866 311352 484 1442702 16038e (TOTALS) after 1127727 311352 484 1439563 15f74b (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-19 09:46:37 +08:00
if (xfs_has_reflink(mp)) {
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
agf->agf_refcount_root = cpu_to_be32(
xfs_refc_block(mp));
agf->agf_refcount_level = cpu_to_be32(1);
agf->agf_refcount_blocks = cpu_to_be32(1);
}
xfs: account for log space when formatting new AGs When we're writing out a fresh new AG, make sure that we don't list an internal log as free and that we create the rmap for the region. growfs never does this, but we will need it when we hook up mkfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
xfs: make is_log_ag() a first class helper We check if an ag contains the log in many places, so make this a first class XFS helper by lifting it to fs/xfs/libxfs/xfs_ag.h and renaming it xfs_ag_contains_log(). The convert all the places that check if the AG contains the log to use this helper. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:13:21 +08:00
if (xfs_ag_contains_log(mp, id->agno)) {
xfs: account for log space when formatting new AGs When we're writing out a fresh new AG, make sure that we don't list an internal log as free and that we create the rmap for the region. growfs never does this, but we will need it when we hook up mkfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-06-29 10:30:21 +08:00
int64_t logblocks = mp->m_sb.sb_logblocks;
be32_add_cpu(&agf->agf_freeblks, -logblocks);
agf->agf_longest = cpu_to_be32(id->agsize -
XFS_FSB_TO_AGBNO(mp, mp->m_sb.sb_logstart) - logblocks);
}
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
}
static void
xfs_agflblock_init(
struct xfs_mount *mp,
struct xfs_buf *bp,
struct aghdr_init_data *id)
{
struct xfs_agfl *agfl = XFS_BUF_TO_AGFL(bp);
__be32 *agfl_bno;
int bucket;
xfs: replace xfs_sb_version checks with feature flag checks Convert the xfs_sb_version_hasfoo() to checks against mp->m_features. Checks of the superblock itself during disk operations (e.g. in the read/write verifiers and the to/from disk formatters) are not converted - they operate purely on the superblock state. Everything else should use the mount features. Large parts of this conversion were done with sed with commands like this: for f in `git grep -l xfs_sb_version_has fs/xfs/*.c`; do sed -i -e 's/xfs_sb_version_has\(.*\)(&\(.*\)->m_sb)/xfs_has_\1(\2)/' $f done With manual cleanups for things like "xfs_has_extflgbit" and other little inconsistencies in naming. The result is ia lot less typing to check features and an XFS binary size reduced by a bit over 3kB: $ size -t fs/xfs/built-in.a text data bss dec hex filenam before 1130866 311352 484 1442702 16038e (TOTALS) after 1127727 311352 484 1439563 15f74b (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-19 09:46:37 +08:00
if (xfs_has_crc(mp)) {
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
agfl->agfl_magicnum = cpu_to_be32(XFS_AGFL_MAGIC);
agfl->agfl_seqno = cpu_to_be32(id->agno);
uuid_copy(&agfl->agfl_uuid, &mp->m_sb.sb_meta_uuid);
}
xfs: remove the agfl_bno member from struct xfs_agfl struct xfs_agfl is a header in front of the AGFL entries that exists for CRC enabled file systems. For not CRC enabled file systems the AGFL is simply a list of agbno. Make the CRC case similar to that by just using the list behind the new header. This indirectly solves a problem with modern gcc versions that warn about taking addresses of packed structures (and we have to pack the AGFL given that gcc rounds up structure sizes). Also replace the helper macro to get from a buffer with an inline function in xfs_alloc.h to make the code easier to read. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2020-03-10 23:57:28 +08:00
agfl_bno = xfs_buf_to_agfl_bno(bp);
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
for (bucket = 0; bucket < xfs_agfl_size(mp); bucket++)
agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK);
}
static void
xfs_agiblock_init(
struct xfs_mount *mp,
struct xfs_buf *bp,
struct aghdr_init_data *id)
{
xfs: remove XFS_BUF_TO_AGI Just dereference bp->b_addr directly and make the code a little simpler and more clear. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2020-03-10 23:57:29 +08:00
struct xfs_agi *agi = bp->b_addr;
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
int bucket;
agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC);
agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION);
agi->agi_seqno = cpu_to_be32(id->agno);
agi->agi_length = cpu_to_be32(id->agsize);
agi->agi_count = 0;
agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp));
agi->agi_level = cpu_to_be32(1);
agi->agi_freecount = 0;
agi->agi_newino = cpu_to_be32(NULLAGINO);
agi->agi_dirino = cpu_to_be32(NULLAGINO);
xfs: replace xfs_sb_version checks with feature flag checks Convert the xfs_sb_version_hasfoo() to checks against mp->m_features. Checks of the superblock itself during disk operations (e.g. in the read/write verifiers and the to/from disk formatters) are not converted - they operate purely on the superblock state. Everything else should use the mount features. Large parts of this conversion were done with sed with commands like this: for f in `git grep -l xfs_sb_version_has fs/xfs/*.c`; do sed -i -e 's/xfs_sb_version_has\(.*\)(&\(.*\)->m_sb)/xfs_has_\1(\2)/' $f done With manual cleanups for things like "xfs_has_extflgbit" and other little inconsistencies in naming. The result is ia lot less typing to check features and an XFS binary size reduced by a bit over 3kB: $ size -t fs/xfs/built-in.a text data bss dec hex filenam before 1130866 311352 484 1442702 16038e (TOTALS) after 1127727 311352 484 1439563 15f74b (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-19 09:46:37 +08:00
if (xfs_has_crc(mp))
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid);
xfs: replace xfs_sb_version checks with feature flag checks Convert the xfs_sb_version_hasfoo() to checks against mp->m_features. Checks of the superblock itself during disk operations (e.g. in the read/write verifiers and the to/from disk formatters) are not converted - they operate purely on the superblock state. Everything else should use the mount features. Large parts of this conversion were done with sed with commands like this: for f in `git grep -l xfs_sb_version_has fs/xfs/*.c`; do sed -i -e 's/xfs_sb_version_has\(.*\)(&\(.*\)->m_sb)/xfs_has_\1(\2)/' $f done With manual cleanups for things like "xfs_has_extflgbit" and other little inconsistencies in naming. The result is ia lot less typing to check features and an XFS binary size reduced by a bit over 3kB: $ size -t fs/xfs/built-in.a text data bss dec hex filenam before 1130866 311352 484 1442702 16038e (TOTALS) after 1127727 311352 484 1439563 15f74b (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-19 09:46:37 +08:00
if (xfs_has_finobt(mp)) {
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
agi->agi_free_root = cpu_to_be32(XFS_FIBT_BLOCK(mp));
agi->agi_free_level = cpu_to_be32(1);
}
for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++)
agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO);
xfs: convert xfs_sb_version_has checks to use mount features This is a conversion of the remaining xfs_sb_version_has..(sbp) checks to use xfs_has_..(mp) feature checks. This was largely done with a vim replacement macro that did: :0,$s/xfs_sb_version_has\(.*\)&\(.*\)->m_sb/xfs_has_\1\2/g<CR> A couple of other variants were also used, and the rest touched up by hand. $ size -t fs/xfs/built-in.a text data bss dec hex filename before 1127533 311352 484 1439369 15f689 (TOTALS) after 1125360 311352 484 1437196 15ee0c (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-19 09:46:55 +08:00
if (xfs_has_inobtcounts(mp)) {
xfs: store inode btree block counts in AGI header Add a btree block usage counters for both inode btrees to the AGI header so that we don't have to walk the entire finobt at mount time to create the per-AG reservations. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2020-08-18 00:58:01 +08:00
agi->agi_iblocks = cpu_to_be32(1);
xfs: convert xfs_sb_version_has checks to use mount features This is a conversion of the remaining xfs_sb_version_has..(sbp) checks to use xfs_has_..(mp) feature checks. This was largely done with a vim replacement macro that did: :0,$s/xfs_sb_version_has\(.*\)&\(.*\)->m_sb/xfs_has_\1\2/g<CR> A couple of other variants were also used, and the rest touched up by hand. $ size -t fs/xfs/built-in.a text data bss dec hex filename before 1127533 311352 484 1439369 15f689 (TOTALS) after 1125360 311352 484 1437196 15ee0c (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-19 09:46:55 +08:00
if (xfs_has_finobt(mp))
xfs: store inode btree block counts in AGI header Add a btree block usage counters for both inode btrees to the AGI header so that we don't have to walk the entire finobt at mount time to create the per-AG reservations. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2020-08-18 00:58:01 +08:00
agi->agi_fblocks = cpu_to_be32(1);
}
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
}
typedef void (*aghdr_init_work_f)(struct xfs_mount *mp, struct xfs_buf *bp,
struct aghdr_init_data *id);
static int
xfs_ag_init_hdr(
struct xfs_mount *mp,
struct aghdr_init_data *id,
aghdr_init_work_f work,
const struct xfs_buf_ops *ops)
{
struct xfs_buf *bp;
xfs: make xfs_buf_get_uncached return an error code Convert xfs_buf_get_uncached() to return numeric error codes like most everywhere else in xfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2020-01-24 09:01:17 +08:00
int error;
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
xfs: make xfs_buf_get_uncached return an error code Convert xfs_buf_get_uncached() to return numeric error codes like most everywhere else in xfs. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2020-01-24 09:01:17 +08:00
error = xfs_get_aghdr_buf(mp, id->daddr, id->numblks, &bp, ops);
if (error)
return error;
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
(*work)(mp, bp, id);
xfs_buf_delwri_queue(bp, &id->buffer_list);
xfs_buf_relse(bp);
return 0;
}
struct xfs_aghdr_grow_data {
xfs_daddr_t daddr;
size_t numblks;
const struct xfs_buf_ops *ops;
aghdr_init_work_f work;
xfs_btnum_t type;
bool need_init;
};
/*
* Prepare new AG headers to be written to disk. We use uncached buffers here,
* as it is assumed these new AG headers are currently beyond the currently
* valid filesystem address space. Using cached buffers would trip over EOFS
* corruption detection alogrithms in the buffer cache lookup routines.
*
* This is a non-transactional function, but the prepared buffers are added to a
* delayed write buffer list supplied by the caller so they can submit them to
* disk and wait on them as required.
*/
int
xfs_ag_init_headers(
struct xfs_mount *mp,
struct aghdr_init_data *id)
{
struct xfs_aghdr_grow_data aghdr_data[] = {
{ /* SB */
.daddr = XFS_AG_DADDR(mp, id->agno, XFS_SB_DADDR),
.numblks = XFS_FSS_TO_BB(mp, 1),
.ops = &xfs_sb_buf_ops,
.work = &xfs_sbblock_init,
.need_init = true
},
{ /* AGF */
.daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGF_DADDR(mp)),
.numblks = XFS_FSS_TO_BB(mp, 1),
.ops = &xfs_agf_buf_ops,
.work = &xfs_agfblock_init,
.need_init = true
},
{ /* AGFL */
.daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGFL_DADDR(mp)),
.numblks = XFS_FSS_TO_BB(mp, 1),
.ops = &xfs_agfl_buf_ops,
.work = &xfs_agflblock_init,
.need_init = true
},
{ /* AGI */
.daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGI_DADDR(mp)),
.numblks = XFS_FSS_TO_BB(mp, 1),
.ops = &xfs_agi_buf_ops,
.work = &xfs_agiblock_init,
.need_init = true
},
{ /* BNO root block */
.daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_BNO_BLOCK(mp)),
.numblks = BTOBB(mp->m_sb.sb_blocksize),
xfs: split up allocation btree verifier Similar to the inode btree verifier, the same allocation btree verifier structure is shared between the by-bno (bnobt) and by-size (cntbt) btrees. This prevents the ability to distinguish magic values between them. Separate the verifier into two, one for each tree, and assign them appropriately. No functional changes. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-02-08 02:45:47 +08:00
.ops = &xfs_bnobt_buf_ops,
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
.work = &xfs_bnoroot_init,
.need_init = true
},
{ /* CNT root block */
.daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_CNT_BLOCK(mp)),
.numblks = BTOBB(mp->m_sb.sb_blocksize),
xfs: split up allocation btree verifier Similar to the inode btree verifier, the same allocation btree verifier structure is shared between the by-bno (bnobt) and by-size (cntbt) btrees. This prevents the ability to distinguish magic values between them. Separate the verifier into two, one for each tree, and assign them appropriately. No functional changes. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-02-08 02:45:47 +08:00
.ops = &xfs_cntbt_buf_ops,
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
.work = &xfs_cntroot_init,
.need_init = true
},
{ /* INO root block */
.daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_IBT_BLOCK(mp)),
.numblks = BTOBB(mp->m_sb.sb_blocksize),
.ops = &xfs_inobt_buf_ops,
.work = &xfs_btroot_init,
.type = XFS_BTNUM_INO,
.need_init = true
},
{ /* FINO root block */
.daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_FIBT_BLOCK(mp)),
.numblks = BTOBB(mp->m_sb.sb_blocksize),
xfs: create a separate finobt verifier The inobt verifier is reused for the inobt and finobt, which prevents the ability to distinguish between magic values on a per-tree basis. Create a separate finobt structure in preparation for changes to enforce the appropriate magic value for the associated tree. This patch has no functional change. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-02-08 02:45:46 +08:00
.ops = &xfs_finobt_buf_ops,
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
.work = &xfs_btroot_init,
.type = XFS_BTNUM_FINO,
xfs: replace xfs_sb_version checks with feature flag checks Convert the xfs_sb_version_hasfoo() to checks against mp->m_features. Checks of the superblock itself during disk operations (e.g. in the read/write verifiers and the to/from disk formatters) are not converted - they operate purely on the superblock state. Everything else should use the mount features. Large parts of this conversion were done with sed with commands like this: for f in `git grep -l xfs_sb_version_has fs/xfs/*.c`; do sed -i -e 's/xfs_sb_version_has\(.*\)(&\(.*\)->m_sb)/xfs_has_\1(\2)/' $f done With manual cleanups for things like "xfs_has_extflgbit" and other little inconsistencies in naming. The result is ia lot less typing to check features and an XFS binary size reduced by a bit over 3kB: $ size -t fs/xfs/built-in.a text data bss dec hex filenam before 1130866 311352 484 1442702 16038e (TOTALS) after 1127727 311352 484 1439563 15f74b (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-19 09:46:37 +08:00
.need_init = xfs_has_finobt(mp)
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
},
{ /* RMAP root block */
.daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_RMAP_BLOCK(mp)),
.numblks = BTOBB(mp->m_sb.sb_blocksize),
.ops = &xfs_rmapbt_buf_ops,
.work = &xfs_rmaproot_init,
xfs: replace xfs_sb_version checks with feature flag checks Convert the xfs_sb_version_hasfoo() to checks against mp->m_features. Checks of the superblock itself during disk operations (e.g. in the read/write verifiers and the to/from disk formatters) are not converted - they operate purely on the superblock state. Everything else should use the mount features. Large parts of this conversion were done with sed with commands like this: for f in `git grep -l xfs_sb_version_has fs/xfs/*.c`; do sed -i -e 's/xfs_sb_version_has\(.*\)(&\(.*\)->m_sb)/xfs_has_\1(\2)/' $f done With manual cleanups for things like "xfs_has_extflgbit" and other little inconsistencies in naming. The result is ia lot less typing to check features and an XFS binary size reduced by a bit over 3kB: $ size -t fs/xfs/built-in.a text data bss dec hex filenam before 1130866 311352 484 1442702 16038e (TOTALS) after 1127727 311352 484 1439563 15f74b (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-19 09:46:37 +08:00
.need_init = xfs_has_rmapbt(mp)
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
},
{ /* REFC root block */
.daddr = XFS_AGB_TO_DADDR(mp, id->agno, xfs_refc_block(mp)),
.numblks = BTOBB(mp->m_sb.sb_blocksize),
.ops = &xfs_refcountbt_buf_ops,
.work = &xfs_btroot_init,
.type = XFS_BTNUM_REFC,
xfs: replace xfs_sb_version checks with feature flag checks Convert the xfs_sb_version_hasfoo() to checks against mp->m_features. Checks of the superblock itself during disk operations (e.g. in the read/write verifiers and the to/from disk formatters) are not converted - they operate purely on the superblock state. Everything else should use the mount features. Large parts of this conversion were done with sed with commands like this: for f in `git grep -l xfs_sb_version_has fs/xfs/*.c`; do sed -i -e 's/xfs_sb_version_has\(.*\)(&\(.*\)->m_sb)/xfs_has_\1(\2)/' $f done With manual cleanups for things like "xfs_has_extflgbit" and other little inconsistencies in naming. The result is ia lot less typing to check features and an XFS binary size reduced by a bit over 3kB: $ size -t fs/xfs/built-in.a text data bss dec hex filenam before 1130866 311352 484 1442702 16038e (TOTALS) after 1127727 311352 484 1439563 15f74b (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-19 09:46:37 +08:00
.need_init = xfs_has_reflink(mp)
xfs: move growfs core to libxfs So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
},
{ /* NULL terminating block */
.daddr = XFS_BUF_DADDR_NULL,
}
};
struct xfs_aghdr_grow_data *dp;
int error = 0;
/* Account for AG free space in new AG */
id->nfree += id->agsize - mp->m_ag_prealloc_blocks;
for (dp = &aghdr_data[0]; dp->daddr != XFS_BUF_DADDR_NULL; dp++) {
if (!dp->need_init)
continue;
id->daddr = dp->daddr;
id->numblks = dp->numblks;
id->type = dp->type;
error = xfs_ag_init_hdr(mp, id, dp->work, dp->ops);
if (error)
break;
}
return error;
}
xfs: factor the ag length extension code into libxfs Growfs currently manually codes the extension of the last AG in a filesytem during the growfs process. Factor that out of the growfs code and move it into libxfs along with teh rest of the AG header modification code. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
int
xfs_ag_shrink_space(
xfs: make last AG grow/shrink perag centric Because the perag must exist for these operations, look it up as part of the common shrink operations and pass it instead of the mount/agno pair. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:09 +08:00
struct xfs_perag *pag,
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
struct xfs_trans **tpp,
xfs_extlen_t delta)
{
xfs: make last AG grow/shrink perag centric Because the perag must exist for these operations, look it up as part of the common shrink operations and pass it instead of the mount/agno pair. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:09 +08:00
struct xfs_mount *mp = pag->pag_mount;
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
struct xfs_alloc_arg args = {
.tp = *tpp,
.mp = mp,
xfs: use xfs_alloc_vextent_this_ag() where appropriate Change obvious callers of single AG allocation to use xfs_alloc_vextent_this_ag(). Drive the per-ag grabbing out to the callers, too, so that callers with active references don't need to do new lookups just for an allocation in a context that already has a perag reference. The only remaining caller that does single AG allocation through xfs_alloc_vextent() is xfs_bmap_btalloc() with XFS_ALLOCTYPE_NEAR_BNO. That is going to need more untangling before it can be converted cleanly. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:53 +08:00
.pag = pag,
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
.minlen = delta,
.maxlen = delta,
.oinfo = XFS_RMAP_OINFO_SKIP_UPDATE,
.resv = XFS_AG_RESV_NONE,
.prod = 1
};
struct xfs_buf *agibp, *agfbp;
struct xfs_agi *agi;
struct xfs_agf *agf;
xfs: fix endianness issue in xfs_ag_shrink_space The AGI buffer is in big-endian format, so we must convert the endianness to CPU format to do any comparisons. Fixes: 46141dc891f7 ("xfs: introduce xfs_ag_shrink_space()") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
2021-06-22 08:39:09 +08:00
xfs_agblock_t aglen;
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
int error, err2;
xfs: make last AG grow/shrink perag centric Because the perag must exist for these operations, look it up as part of the common shrink operations and pass it instead of the mount/agno pair. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:09 +08:00
ASSERT(pag->pag_agno == mp->m_sb.sb_agcount - 1);
xfs: pass perag to xfs_ialloc_read_agi() xfs_ialloc_read_agi() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:24 +08:00
error = xfs_ialloc_read_agi(pag, *tpp, &agibp);
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
if (error)
return error;
agi = agibp->b_addr;
xfs: pass perag to xfs_alloc_read_agf() xfs_alloc_read_agf() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Whilst modifying the xfs_reflink_find_shared() function definition, declare it static and remove the extern declaration as it is an internal function only these days. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:40 +08:00
error = xfs_alloc_read_agf(pag, *tpp, 0, &agfbp);
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
if (error)
return error;
agf = agfbp->b_addr;
xfs: fix endianness issue in xfs_ag_shrink_space The AGI buffer is in big-endian format, so we must convert the endianness to CPU format to do any comparisons. Fixes: 46141dc891f7 ("xfs: introduce xfs_ag_shrink_space()") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
2021-06-22 08:39:09 +08:00
aglen = be32_to_cpu(agi->agi_length);
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
/* some extra paranoid checks before we shrink the ag */
if (XFS_IS_CORRUPT(mp, agf->agf_length != agi->agi_length))
return -EFSCORRUPTED;
xfs: fix endianness issue in xfs_ag_shrink_space The AGI buffer is in big-endian format, so we must convert the endianness to CPU format to do any comparisons. Fixes: 46141dc891f7 ("xfs: introduce xfs_ag_shrink_space()") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
2021-06-22 08:39:09 +08:00
if (delta >= aglen)
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
return -EINVAL;
xfs: check for sparse inode clusters that cross new EOAG when shrinking While running xfs/168, I noticed occasional write verifier shutdowns involving inodes at the very end of the filesystem. Existing inode btree validation code checks that all inode clusters are fully contained within the filesystem. However, due to inadequate checking in the fs shrink code, it's possible that there could be a sparse inode cluster at the end of the filesystem where the upper inodes of the cluster are marked as holes and the corresponding blocks are free. In this case, the last blocks in the AG are listed in the bnobt. This enables the shrink to proceed but results in a filesystem that trips the inode verifiers. Fix this by disallowing the shrink. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
2021-07-13 03:58:47 +08:00
/*
* Make sure that the last inode cluster cannot overlap with the new
* end of the AG, even if it's sparse.
*/
xfs: use active perag references for inode allocation Convert the inode allocation routines to use active perag references or references held by callers rather than grab their own. Also drive the perag further inwards to replace xfs_mounts when doing operations on a specific AG. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:52 +08:00
error = xfs_ialloc_check_shrink(pag, *tpp, agibp, aglen - delta);
xfs: check for sparse inode clusters that cross new EOAG when shrinking While running xfs/168, I noticed occasional write verifier shutdowns involving inodes at the very end of the filesystem. Existing inode btree validation code checks that all inode clusters are fully contained within the filesystem. However, due to inadequate checking in the fs shrink code, it's possible that there could be a sparse inode cluster at the end of the filesystem where the upper inodes of the cluster are marked as holes and the corresponding blocks are free. In this case, the last blocks in the AG are listed in the bnobt. This enables the shrink to proceed but results in a filesystem that trips the inode verifiers. Fix this by disallowing the shrink. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
2021-07-13 03:58:47 +08:00
if (error)
return error;
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
/*
* Disable perag reservations so it doesn't cause the allocation request
* to fail. We'll reestablish reservation before we return.
*/
xfs: pass perag to xfs_ialloc_read_agi() xfs_ialloc_read_agi() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:24 +08:00
error = xfs_ag_resv_free(pag);
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
if (error)
return error;
/* internal log shouldn't also show up in the free space btrees */
xfs: introduce xfs_alloc_vextent_exact_bno() Two of the callers to xfs_alloc_vextent_this_ag() actually want exact block number allocation, not anywhere-in-ag allocation. Split this out from _this_ag() as a first class citizen so no external extent allocation code needs to care about args->type anymore. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2023-02-13 06:14:54 +08:00
error = xfs_alloc_vextent_exact_bno(&args,
XFS_AGB_TO_FSB(mp, pag->pag_agno, aglen - delta));
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
if (!error && args.agbno == NULLAGBLOCK)
error = -ENOSPC;
if (error) {
/*
* if extent allocation fails, need to roll the transaction to
* ensure that the AGFL fixup has been committed anyway.
*/
xfs_trans_bhold(*tpp, agfbp);
err2 = xfs_trans_roll(tpp);
if (err2)
return err2;
xfs_trans_bjoin(*tpp, agfbp);
goto resv_init_out;
}
/*
* if successfully deleted from freespace btrees, need to confirm
* per-AG reservation works as expected.
*/
be32_add_cpu(&agi->agi_length, -delta);
be32_add_cpu(&agf->agf_length, -delta);
xfs: pass perag to xfs_ialloc_read_agi() xfs_ialloc_read_agi() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:24 +08:00
err2 = xfs_ag_resv_init(pag, *tpp);
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
if (err2) {
be32_add_cpu(&agi->agi_length, delta);
be32_add_cpu(&agf->agf_length, delta);
if (err2 != -ENOSPC)
goto resv_err;
xfs: validate block number being freed before adding to xefi Bad things happen in defered extent freeing operations if it is passed a bad block number in the xefi. This can come from a bogus agno/agbno pair from deferred agfl freeing, or just a bad fsbno being passed to __xfs_free_extent_later(). Either way, it's very difficult to diagnose where a null perag oops in EFI creation is coming from when the operation that queued the xefi has already been completed and there's no longer any trace of it around.... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Dave Chinner <david@fromorbit.com>
2023-06-05 12:48:15 +08:00
err2 = __xfs_free_extent_later(*tpp, args.fsbno, delta, NULL,
xfs: use deferred frees for btree block freeing Btrees that aren't freespace management trees use the normal extent allocation and freeing routines for their blocks. Hence when a btree block is freed, a direct call to xfs_free_extent() is made and the extent is immediately freed. This puts the entire free space management btrees under this path, so we are stacking btrees on btrees in the call stack. The inobt, finobt and refcount btrees all do this. However, the bmap btree does not do this - it calls xfs_free_extent_later() to defer the extent free operation via an XEFI and hence it gets processed in deferred operation processing during the commit of the primary transaction (i.e. via intent chaining). We need to change xfs_free_extent() to behave in a non-blocking manner so that we can avoid deadlocks with busy extents near ENOSPC in transactions that free multiple extents. Inserting or removing a record from a btree can cause a multi-level tree merge operation and that will free multiple blocks from the btree in a single transaction. i.e. we can call xfs_free_extent() multiple times, and hence the btree manipulation transaction is vulnerable to this busy extent deadlock vector. To fix this, convert all the remaining callers of xfs_free_extent() to use xfs_free_extent_later() to queue XEFIs and hence defer processing of the extent frees to a context that can be safely restarted if a deadlock condition is detected. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
2023-06-29 02:04:32 +08:00
XFS_AG_RESV_NONE, true);
xfs: validate block number being freed before adding to xefi Bad things happen in defered extent freeing operations if it is passed a bad block number in the xefi. This can come from a bogus agno/agbno pair from deferred agfl freeing, or just a bad fsbno being passed to __xfs_free_extent_later(). Either way, it's very difficult to diagnose where a null perag oops in EFI creation is coming from when the operation that queued the xefi has already been completed and there's no longer any trace of it around.... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Dave Chinner <david@fromorbit.com>
2023-06-05 12:48:15 +08:00
if (err2)
goto resv_err;
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
/*
* Roll the transaction before trying to re-init the per-ag
* reservation. The new transaction is clean so it will cancel
* without any side effects.
*/
error = xfs_defer_finish(tpp);
if (error)
return error;
error = -ENOSPC;
goto resv_init_out;
}
xfs_ialloc_log_agi(*tpp, agibp, XFS_AGI_LENGTH);
xfs_alloc_log_agf(*tpp, agfbp, XFS_AGF_LENGTH);
return 0;
xfs: pass perag to xfs_ialloc_read_agi() xfs_ialloc_read_agi() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:24 +08:00
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
resv_init_out:
xfs: pass perag to xfs_ialloc_read_agi() xfs_ialloc_read_agi() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:24 +08:00
err2 = xfs_ag_resv_init(pag, *tpp);
xfs: introduce xfs_ag_shrink_space() This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-03-24 10:05:38 +08:00
if (!err2)
return error;
resv_err:
xfs_warn(mp, "Error %d reserving per-AG metadata reserve pool.", err2);
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
return err2;
}
xfs: factor the ag length extension code into libxfs Growfs currently manually codes the extension of the last AG in a filesytem during the growfs process. Factor that out of the growfs code and move it into libxfs along with teh rest of the AG header modification code. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
/*
* Extent the AG indicated by the @id by the length passed in
*/
int
xfs_ag_extend_space(
xfs: make last AG grow/shrink perag centric Because the perag must exist for these operations, look it up as part of the common shrink operations and pass it instead of the mount/agno pair. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:09 +08:00
struct xfs_perag *pag,
xfs: factor the ag length extension code into libxfs Growfs currently manually codes the extension of the last AG in a filesytem during the growfs process. Factor that out of the growfs code and move it into libxfs along with teh rest of the AG header modification code. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
struct xfs_trans *tp,
xfs_extlen_t len)
{
struct xfs_buf *bp;
struct xfs_agi *agi;
struct xfs_agf *agf;
int error;
xfs: make last AG grow/shrink perag centric Because the perag must exist for these operations, look it up as part of the common shrink operations and pass it instead of the mount/agno pair. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:09 +08:00
ASSERT(pag->pag_agno == pag->pag_mount->m_sb.sb_agcount - 1);
xfs: pass perag to xfs_ialloc_read_agi() xfs_ialloc_read_agi() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:24 +08:00
error = xfs_ialloc_read_agi(pag, tp, &bp);
xfs: factor the ag length extension code into libxfs Growfs currently manually codes the extension of the last AG in a filesytem during the growfs process. Factor that out of the growfs code and move it into libxfs along with teh rest of the AG header modification code. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
if (error)
return error;
xfs: remove XFS_BUF_TO_AGI Just dereference bp->b_addr directly and make the code a little simpler and more clear. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2020-03-10 23:57:29 +08:00
agi = bp->b_addr;
xfs: factor the ag length extension code into libxfs Growfs currently manually codes the extension of the last AG in a filesytem during the growfs process. Factor that out of the growfs code and move it into libxfs along with teh rest of the AG header modification code. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
be32_add_cpu(&agi->agi_length, len);
xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH);
/*
* Change agf length.
*/
xfs: pass perag to xfs_alloc_read_agf() xfs_alloc_read_agf() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Whilst modifying the xfs_reflink_find_shared() function definition, declare it static and remove the extern declaration as it is an internal function only these days. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:40 +08:00
error = xfs_alloc_read_agf(pag, tp, 0, &bp);
xfs: factor the ag length extension code into libxfs Growfs currently manually codes the extension of the last AG in a filesytem during the growfs process. Factor that out of the growfs code and move it into libxfs along with teh rest of the AG header modification code. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
if (error)
return error;
xfs: remove XFS_BUF_TO_AGF Just dereference bp->b_addr directly and make the code a little simpler and more clear. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2020-03-10 23:57:29 +08:00
agf = bp->b_addr;
xfs: factor the ag length extension code into libxfs Growfs currently manually codes the extension of the last AG in a filesytem during the growfs process. Factor that out of the growfs code and move it into libxfs along with teh rest of the AG header modification code. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
be32_add_cpu(&agf->agf_length, len);
ASSERT(agf->agf_length == agi->agi_length);
xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH);
/*
* Free the new space.
*
xfs: remove xfs_rmap_ag_owner and friends Owner information for static fs metadata can be defined readonly at build time because it never changes across filesystems. This enables us to reduce stack usage (particularly in scrub) because we can use the statically defined oinfo structures. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2018-12-13 00:46:23 +08:00
* XFS_RMAP_OINFO_SKIP_UPDATE is used here to tell the rmap btree that
xfs: factor the ag length extension code into libxfs Growfs currently manually codes the extension of the last AG in a filesytem during the growfs process. Factor that out of the growfs code and move it into libxfs along with teh rest of the AG header modification code. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
* this doesn't actually exist in the rmap btree.
*/
xfs: make last AG grow/shrink perag centric Because the perag must exist for these operations, look it up as part of the common shrink operations and pass it instead of the mount/agno pair. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:09 +08:00
error = xfs_rmap_free(tp, bp, pag, be32_to_cpu(agf->agf_length) - len,
xfs: remove xfs_rmap_ag_owner and friends Owner information for static fs metadata can be defined readonly at build time because it never changes across filesystems. This enables us to reduce stack usage (particularly in scrub) because we can use the statically defined oinfo structures. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2018-12-13 00:46:23 +08:00
len, &XFS_RMAP_OINFO_SKIP_UPDATE);
xfs: factor the ag length extension code into libxfs Growfs currently manually codes the extension of the last AG in a filesytem during the growfs process. Factor that out of the growfs code and move it into libxfs along with teh rest of the AG header modification code. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
if (error)
return error;
xfs: pass per-ag references to xfs_free_extent Pass a reference to the per-AG structure to xfs_free_extent. Most callers already have one, so we can eliminate unnecessary lookups. The one exception to this is the EFI code, which the next patch will fix. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2023-04-12 09:59:53 +08:00
error = xfs_free_extent(tp, pag, be32_to_cpu(agf->agf_length) - len,
len, &XFS_RMAP_OINFO_SKIP_UPDATE, XFS_AG_RESV_NONE);
xfs: Pre-calculate per-AG agbno geometry There is a lot of overhead in functions like xfs_verify_agbno() that repeatedly calculate the geometry limits of an AG. These can be pre-calculated as they are static and the verification context has a per-ag context it can quickly reference. In the case of xfs_verify_agbno(), we now always have a perag context handy, so we can store the AG length and the minimum valid block in the AG in the perag. This means we don't have to calculate it on every call and it can be inlined in callers if we move it to xfs_ag.h. Move xfs_ag_block_count() to xfs_ag.c because it's really a per-ag function and not an XFS type function. We need a little bit of rework that is specific to xfs_initialise_perag() to allow growfs to calculate the new perag sizes before we've updated the primary superblock during the grow (chicken/egg situation). Note that we leave the original xfs_verify_agbno in place in xfs_types.c as a static function as other callers in that file do not have per-ag contexts so still need to go the long way. It's been renamed to xfs_verify_agno_agbno() to indicate it takes both an agno and an agbno to differentiate it from new function. Future commits will make similar changes for other per-ag geometry validation functions. Further: $ size --totals fs/xfs/built-in.a text data bss dec hex filename before 1483006 329588 572 1813166 1baaae (TOTALS) after 1482185 329588 572 1812345 1ba779 (TOTALS) This rework reduces the binary size by ~820 bytes, indicating that much less work is being done to bounds check the agbno values against on per-ag geometry information. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:13:02 +08:00
if (error)
return error;
/* Update perag geometry */
pag->block_count = be32_to_cpu(agf->agf_length);
xfs: Pre-calculate per-AG agino geometry There is a lot of overhead in functions like xfs_verify_agino() that repeatedly calculate the geometry limits of an AG. These can be pre-calculated as they are static and the verification context has a per-ag context it can quickly reference. In the case of xfs_verify_agino(), we now always have a perag context handy, so we can store the minimum and maximum agino values in the AG in the perag. This means we don't have to calculate it on every call and it can be inlined in callers if we move it to xfs_ag.h. xfs_verify_agino_or_null() gets the same perag treatment. xfs_agino_range() is moved to xfs_ag.c as it's not really a type function, and it's use is largely restricted as the first and last aginos can be grabbed straight from the perag in most cases. Note that we leave the original xfs_verify_agino in place in xfs_types.c as a static function as other callers in that file do not have per-ag contexts so still need to go the long way. It's been renamed to xfs_verify_agno_agino() to indicate it takes both an agno and an agino to differentiate it from new function. $ size --totals fs/xfs/built-in.a text data bss dec hex filename before 1482185 329588 572 1812345 1ba779 (TOTALS) after 1481937 329588 572 1812097 1ba681 (TOTALS) Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:13:10 +08:00
__xfs_agino_range(pag->pag_mount, pag->block_count, &pag->agino_min,
&pag->agino_max);
xfs: Pre-calculate per-AG agbno geometry There is a lot of overhead in functions like xfs_verify_agbno() that repeatedly calculate the geometry limits of an AG. These can be pre-calculated as they are static and the verification context has a per-ag context it can quickly reference. In the case of xfs_verify_agbno(), we now always have a perag context handy, so we can store the AG length and the minimum valid block in the AG in the perag. This means we don't have to calculate it on every call and it can be inlined in callers if we move it to xfs_ag.h. Move xfs_ag_block_count() to xfs_ag.c because it's really a per-ag function and not an XFS type function. We need a little bit of rework that is specific to xfs_initialise_perag() to allow growfs to calculate the new perag sizes before we've updated the primary superblock during the grow (chicken/egg situation). Note that we leave the original xfs_verify_agbno in place in xfs_types.c as a static function as other callers in that file do not have per-ag contexts so still need to go the long way. It's been renamed to xfs_verify_agno_agbno() to indicate it takes both an agno and an agbno to differentiate it from new function. Future commits will make similar changes for other per-ag geometry validation functions. Further: $ size --totals fs/xfs/built-in.a text data bss dec hex filename before 1483006 329588 572 1813166 1baaae (TOTALS) after 1482185 329588 572 1812345 1ba779 (TOTALS) This rework reduces the binary size by ~820 bytes, indicating that much less work is being done to bounds check the agbno values against on per-ag geometry information. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:13:02 +08:00
return 0;
xfs: factor the ag length extension code into libxfs Growfs currently manually codes the extension of the last AG in a filesytem during the growfs process. Factor that out of the growfs code and move it into libxfs along with teh rest of the AG header modification code. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-14 14:10:08 +08:00
}
xfs: add a new ioctl to describe allocation group geometry Add a new ioctl to describe an allocation group's geometry. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-04-12 22:41:17 +08:00
/* Retrieve AG geometry. */
int
xfs_ag_get_geometry(
xfs: make last AG grow/shrink perag centric Because the perag must exist for these operations, look it up as part of the common shrink operations and pass it instead of the mount/agno pair. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:09 +08:00
struct xfs_perag *pag,
xfs: add a new ioctl to describe allocation group geometry Add a new ioctl to describe an allocation group's geometry. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-04-12 22:41:17 +08:00
struct xfs_ag_geometry *ageo)
{
struct xfs_buf *agi_bp;
struct xfs_buf *agf_bp;
struct xfs_agi *agi;
struct xfs_agf *agf;
unsigned int freeblks;
int error;
/* Lock the AG headers. */
xfs: pass perag to xfs_ialloc_read_agi() xfs_ialloc_read_agi() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:24 +08:00
error = xfs_ialloc_read_agi(pag, NULL, &agi_bp);
xfs: add a new ioctl to describe allocation group geometry Add a new ioctl to describe an allocation group's geometry. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-04-12 22:41:17 +08:00
if (error)
return error;
xfs: pass perag to xfs_alloc_read_agf() xfs_alloc_read_agf() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Whilst modifying the xfs_reflink_find_shared() function definition, declare it static and remove the extern declaration as it is an internal function only these days. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:40 +08:00
error = xfs_alloc_read_agf(pag, NULL, 0, &agf_bp);
xfs: add a new ioctl to describe allocation group geometry Add a new ioctl to describe an allocation group's geometry. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-04-12 22:41:17 +08:00
if (error)
goto out_agi;
xfs: get rid of unnecessary xfs_perag_{get,put} pairs In the course of some operations, we look up the perag from the mount multiple times to get or change perag information. These are often very short pieces of code, so while the lookup cost is generally low, the cost of the lookup is far higher than the cost of the operation we are doing on the perag. Since we changed buffers to hold references to the perag they are cached in, many modification contexts already hold active references to the perag that are held across these operations. This is especially true for any operation that is serialised by an allocation group header buffer. In these cases, we can just use the buffer's reference to the perag to avoid needing to do lookups to access the perag. This means that many operations don't need to do perag lookups at all to access the perag because they've already looked up objects that own persistent references and hence can use that reference instead. Cc: Dave Chinner <dchinner@redhat.com> Cc: "Darrick J. Wong" <darrick.wong@oracle.com> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2020-07-14 00:13:00 +08:00
xfs: add a new ioctl to describe allocation group geometry Add a new ioctl to describe an allocation group's geometry. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-04-12 22:41:17 +08:00
/* Fill out form. */
memset(ageo, 0, sizeof(*ageo));
xfs: make last AG grow/shrink perag centric Because the perag must exist for these operations, look it up as part of the common shrink operations and pass it instead of the mount/agno pair. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2022-07-07 17:07:09 +08:00
ageo->ag_number = pag->pag_agno;
xfs: add a new ioctl to describe allocation group geometry Add a new ioctl to describe an allocation group's geometry. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-04-12 22:41:17 +08:00
xfs: remove XFS_BUF_TO_AGI Just dereference bp->b_addr directly and make the code a little simpler and more clear. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2020-03-10 23:57:29 +08:00
agi = agi_bp->b_addr;
xfs: add a new ioctl to describe allocation group geometry Add a new ioctl to describe an allocation group's geometry. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-04-12 22:41:17 +08:00
ageo->ag_icount = be32_to_cpu(agi->agi_count);
ageo->ag_ifree = be32_to_cpu(agi->agi_freecount);
xfs: remove XFS_BUF_TO_AGF Just dereference bp->b_addr directly and make the code a little simpler and more clear. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2020-03-10 23:57:29 +08:00
agf = agf_bp->b_addr;
xfs: add a new ioctl to describe allocation group geometry Add a new ioctl to describe an allocation group's geometry. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-04-12 22:41:17 +08:00
ageo->ag_length = be32_to_cpu(agf->agf_length);
freeblks = pag->pagf_freeblks +
pag->pagf_flcount +
pag->pagf_btreeblks -
xfs_ag_resv_needed(pag, XFS_AG_RESV_NONE);
ageo->ag_freeblks = freeblks;
xfs: report AG health via AG geometry ioctl Use the AG geometry info ioctl to report health status too. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-04-12 22:41:18 +08:00
xfs_ag_geom_health(pag, ageo);
xfs: add a new ioctl to describe allocation group geometry Add a new ioctl to describe an allocation group's geometry. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-04-12 22:41:17 +08:00
/* Release resources. */
xfs_buf_relse(agf_bp);
out_agi:
xfs_buf_relse(agi_bp);
return error;
}