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OpenCloudOS-Kernel/fs/xfs/xfs_icreate_item.c

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xfs: convert to SPDX license tags Remove the verbose license text from XFS files and replace them with SPDX tags. This does not change the license of any of the code, merely refers to the common, up-to-date license files in LICENSES/ This change was mostly scripted. fs/xfs/Makefile and fs/xfs/libxfs/xfs_fs.h were modified by hand, the rest were detected and modified by the following command: for f in `git grep -l "GNU General" fs/xfs/` ; do echo $f cat $f | awk -f hdr.awk > $f.new mv -f $f.new $f done And the hdr.awk script that did the modification (including detecting the difference between GPL-2.0 and GPL-2.0+ licenses) is as follows: $ cat hdr.awk BEGIN { hdr = 1.0 tag = "GPL-2.0" str = "" } /^ \* This program is free software/ { hdr = 2.0; next } /any later version./ { tag = "GPL-2.0+" next } /^ \*\// { if (hdr > 0.0) { print "// SPDX-License-Identifier: " tag print str print $0 str="" hdr = 0.0 next } print $0 next } /^ \* / { if (hdr > 1.0) next if (hdr > 0.0) { if (str != "") str = str "\n" str = str $0 next } print $0 next } /^ \*/ { if (hdr > 0.0) next print $0 next } // { if (hdr > 0.0) { if (str != "") str = str "\n" str = str $0 next } print $0 } END { } $ 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>
2018-06-06 10:42:14 +08:00
// SPDX-License-Identifier: GPL-2.0
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
/*
* Copyright (c) 2008-2010, 2013 Dave Chinner
* All Rights Reserved.
*/
#include "xfs.h"
#include "xfs_fs.h"
xfs: create a shared header file for format-related information All of the buffer operations structures are needed to be exported for xfs_db, so move them all to a common location rather than spreading them all over the place. They are verifying the on-disk format, so while xfs_format.h might be a good place, it is not part of the on disk format. Hence we need to create a new header file that we centralise these related definitions. Start by moving the bffer operations structures, and then also move all the other definitions that have crept into xfs_log_format.h and xfs_format.h as there was no other shared header file to put them in. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-10-23 07:36:05 +08:00
#include "xfs_shared.h"
xfs: refactor log recovery icreate item dispatch for pass2 commit functions Move the log icreate item pass2 commit code into the per-item source code files and use the dispatch function to call it. We do these one at a time because there's a lot of code to move. No functional changes. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2020-05-02 07:00:48 +08:00
#include "xfs_format.h"
xfs: decouple log and transaction headers xfs_trans.h has a dependency on xfs_log.h for a couple of structures. Most code that does transactions doesn't need to know anything about the log, but this dependency means that they have to include xfs_log.h. Decouple the xfs_trans.h and xfs_log.h header files and clean up the includes to be in dependency order. In doing this, remove the direct include of xfs_trans_reserve.h from xfs_trans.h so that we remove the dependency between xfs_trans.h and xfs_mount.h. Hence the xfs_trans.h include can be moved to the indicate the actual dependencies other header files have on it. Note that these are kernel only header files, so this does not translate to any userspace changes at all. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-10-23 07:50:10 +08:00
#include "xfs_log_format.h"
xfs: refactor log recovery icreate item dispatch for pass2 commit functions Move the log icreate item pass2 commit code into the per-item source code files and use the dispatch function to call it. We do these one at a time because there's a lot of code to move. No functional changes. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2020-05-02 07:00:48 +08:00
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_inode.h"
xfs: decouple log and transaction headers xfs_trans.h has a dependency on xfs_log.h for a couple of structures. Most code that does transactions doesn't need to know anything about the log, but this dependency means that they have to include xfs_log.h. Decouple the xfs_trans.h and xfs_log.h header files and clean up the includes to be in dependency order. In doing this, remove the direct include of xfs_trans_reserve.h from xfs_trans.h so that we remove the dependency between xfs_trans.h and xfs_mount.h. Hence the xfs_trans.h include can be moved to the indicate the actual dependencies other header files have on it. Note that these are kernel only header files, so this does not translate to any userspace changes at all. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-10-23 07:50:10 +08:00
#include "xfs_trans.h"
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
#include "xfs_trans_priv.h"
#include "xfs_icreate_item.h"
xfs: introduce xlog_copy_iovec Add a helper to abstract out filling the log iovecs in the log item format handlers. This will allow us to change the way we do the log item formatting more easily. The copy in the name is a bit confusing for now as it just assigns a pointer and lets the CIL code perform the copy, but that will change soon. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2013-12-13 08:00:43 +08:00
#include "xfs_log.h"
xfs: refactor log recovery item sorting into a generic dispatch structure Create a generic dispatch structure to delegate recovery of different log item types into various code modules. This will enable us to move code specific to a particular log item type out of xfs_log_recover.c and into the log item source. The first operation we virtualize is the log item sorting. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2020-05-02 07:00:45 +08:00
#include "xfs_log_priv.h"
#include "xfs_log_recover.h"
xfs: refactor log recovery icreate item dispatch for pass2 commit functions Move the log icreate item pass2 commit code into the per-item source code files and use the dispatch function to call it. We do these one at a time because there's a lot of code to move. No functional changes. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2020-05-02 07:00:48 +08:00
#include "xfs_ialloc.h"
#include "xfs_trace.h"
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
xfs: rename _zone variables to _cache Now that we've gotten rid of the kmem_zone_t typedef, rename the variables to _cache since that's what they are. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
2021-10-13 02:09:23 +08:00
struct kmem_cache *xfs_icreate_cache; /* inode create item */
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip)
{
return container_of(lip, struct xfs_icreate_item, ic_item);
}
/*
* This returns the number of iovecs needed to log the given inode item.
*
* We only need one iovec for the icreate log structure.
*/
xfs: return log item size in IOP_SIZE To begin optimising the CIL commit process, we need to have IOP_SIZE return both the number of vectors and the size of the data pointed to by the vectors. This enables us to calculate the size ofthe memory allocation needed before the formatting step and reduces the number of memory allocations per item by one. While there, kill the IOP_SIZE macro. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-08-12 18:50:04 +08:00
STATIC void
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
xfs_icreate_item_size(
xfs: return log item size in IOP_SIZE To begin optimising the CIL commit process, we need to have IOP_SIZE return both the number of vectors and the size of the data pointed to by the vectors. This enables us to calculate the size ofthe memory allocation needed before the formatting step and reduces the number of memory allocations per item by one. While there, kill the IOP_SIZE macro. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-08-12 18:50:04 +08:00
struct xfs_log_item *lip,
int *nvecs,
int *nbytes)
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
{
xfs: return log item size in IOP_SIZE To begin optimising the CIL commit process, we need to have IOP_SIZE return both the number of vectors and the size of the data pointed to by the vectors. This enables us to calculate the size ofthe memory allocation needed before the formatting step and reduces the number of memory allocations per item by one. While there, kill the IOP_SIZE macro. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-08-12 18:50:04 +08:00
*nvecs += 1;
*nbytes += sizeof(struct xfs_icreate_log);
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
}
/*
* This is called to fill in the vector of log iovecs for the
* given inode create log item.
*/
STATIC void
xfs_icreate_item_format(
struct xfs_log_item *lip,
xfs: format log items write directly into the linear CIL buffer Instead of setting up pointers to memory locations in iop_format which then get copied into the CIL linear buffer after return move the copy into the individual inode items. This avoids the need to always have a memory block in the exact same layout that gets written into the log around, and allow the log items to be much more flexible in their in-memory layouts. The only caveat is that we need to properly align the data for each iovec so that don't have structures misaligned in subsequent iovecs. Note that all log item format routines now need to be careful to modify the copy of the item that was placed into the CIL after calls to xlog_copy_iovec instead of the in-memory copy. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2013-12-13 08:34:02 +08:00
struct xfs_log_vec *lv)
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
{
struct xfs_icreate_item *icp = ICR_ITEM(lip);
xfs: format log items write directly into the linear CIL buffer Instead of setting up pointers to memory locations in iop_format which then get copied into the CIL linear buffer after return move the copy into the individual inode items. This avoids the need to always have a memory block in the exact same layout that gets written into the log around, and allow the log items to be much more flexible in their in-memory layouts. The only caveat is that we need to properly align the data for each iovec so that don't have structures misaligned in subsequent iovecs. Note that all log item format routines now need to be careful to modify the copy of the item that was placed into the CIL after calls to xlog_copy_iovec instead of the in-memory copy. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2013-12-13 08:34:02 +08:00
struct xfs_log_iovec *vecp = NULL;
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
xfs: format log items write directly into the linear CIL buffer Instead of setting up pointers to memory locations in iop_format which then get copied into the CIL linear buffer after return move the copy into the individual inode items. This avoids the need to always have a memory block in the exact same layout that gets written into the log around, and allow the log items to be much more flexible in their in-memory layouts. The only caveat is that we need to properly align the data for each iovec so that don't have structures misaligned in subsequent iovecs. Note that all log item format routines now need to be careful to modify the copy of the item that was placed into the CIL after calls to xlog_copy_iovec instead of the in-memory copy. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2013-12-13 08:34:02 +08:00
xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ICREATE,
xfs: introduce xlog_copy_iovec Add a helper to abstract out filling the log iovecs in the log item format handlers. This will allow us to change the way we do the log item formatting more easily. The copy in the name is a bit confusing for now as it just assigns a pointer and lets the CIL code perform the copy, but that will change soon. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2013-12-13 08:00:43 +08:00
&icp->ic_format,
sizeof(struct xfs_icreate_log));
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
}
STATIC void
xfs: split iop_unlock The iop_unlock method is called when comitting or cancelling a transaction. In the latter case, the transaction may or may not be aborted. While there is no known problem with the current code in practice, this implementation is limited in that any log item implementation that might want to differentiate between a commit and a cancellation must rely on the aborted state. The aborted bit is only set when the cancelled transaction is dirty, however. This means that there is no way to distinguish between a commit and a clean transaction cancellation. For example, intent log items currently rely on this distinction. The log item is either transferred to the CIL on commit or released on transaction cancel. There is currently no possibility for a clean intent log item in a transaction, but if that state is ever introduced a cancel of such a transaction will immediately result in memory leaks of the associated log item(s). This is an interface deficiency and landmine. To clean this up, replace the iop_unlock method with an iop_release method that is specific to transaction cancel. The existing iop_committing method occurs at the same time as iop_unlock in the commit path and there is no need for two separate callbacks here. Overload the iop_committing method with the current commit time iop_unlock implementations to eliminate the need for the latter and further simplify the interface. Signed-off-by: Christoph Hellwig <hch@lst.de> 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>
2019-06-29 10:27:32 +08:00
xfs_icreate_item_release(
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
struct xfs_log_item *lip)
{
xfs: fix potential log item leak Ever since we added shadown format buffers to the log items, log items need to handle the item being released with shadow buffers attached. Due to the fact this requirement was added at the same time we added new rmap/reflink intents, we missed the cleanup of those items. In theory, this means shadow buffers can be leaked in a very small window when a shutdown is initiated. Testing with KASAN shows this leak does not happen in practice - we haven't identified a single leak in several years of shutdown testing since ~v4.8 kernels. However, the intent whiteout cleanup mechanism results in every cancelled intent in exactly the same state as this tiny race window creates and so if intents down clean up shadow buffers on final release we will leak the shadow buffer for just about every intent we create. Hence we start with this patch to close this condition off and ensure that when whiteouts start to be used we don't leak lots of memory. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2022-05-04 09:45:11 +08:00
kmem_free(ICR_ITEM(lip)->ic_item.li_lv_shadow);
xfs: rename _zone variables to _cache Now that we've gotten rid of the kmem_zone_t typedef, rename the variables to _cache since that's what they are. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
2021-10-13 02:09:23 +08:00
kmem_cache_free(xfs_icreate_cache, ICR_ITEM(lip));
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
}
fs: xfs: xfs_icreate_item: constify xfs_item_ops structure Declare the structure xfs_item_ops as const as it is only passed as an argument to the function xfs_log_item_init. As this argument is of type const struct xfs_item_ops *, so xfs_item_ops structures having this property can be declared as const. Done using Coccinelle: @r1 disable optional_qualifier @ identifier i; position p; @@ static struct xfs_item_ops i@p = {...}; @ok1@ identifier r1.i; position p; expression e1,e2,e3; @@ xfs_log_item_init(e1,e2,e3,&i@p) @bad@ position p!={r1.p,ok1.p}; identifier r1.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r1.i; @@ static +const struct xfs_item_ops i={...}; @depends on !bad disable optional_qualifier@ identifier r1.i; @@ +const struct xfs_item_ops i; File size before: text data bss dec hex filename 737 64 8 809 329 fs/xfs/xfs_icreate_item.o File size after: text data bss dec hex filename 801 0 8 809 329 fs/xfs/xfs_icreate_item.o Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
2016-11-28 11:57:42 +08:00
static const struct xfs_item_ops xfs_icreate_item_ops = {
xfs: add a flag to release log items on commit We have various items that are released from ->iop_comitting. Add a flag to just call ->iop_release from the commit path to avoid tons of boilerplate code. Signed-off-by: Christoph Hellwig <hch@lst.de> 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>
2019-06-29 10:27:32 +08:00
.flags = XFS_ITEM_RELEASE_WHEN_COMMITTED,
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
.iop_size = xfs_icreate_item_size,
.iop_format = xfs_icreate_item_format,
xfs: split iop_unlock The iop_unlock method is called when comitting or cancelling a transaction. In the latter case, the transaction may or may not be aborted. While there is no known problem with the current code in practice, this implementation is limited in that any log item implementation that might want to differentiate between a commit and a cancellation must rely on the aborted state. The aborted bit is only set when the cancelled transaction is dirty, however. This means that there is no way to distinguish between a commit and a clean transaction cancellation. For example, intent log items currently rely on this distinction. The log item is either transferred to the CIL on commit or released on transaction cancel. There is currently no possibility for a clean intent log item in a transaction, but if that state is ever introduced a cancel of such a transaction will immediately result in memory leaks of the associated log item(s). This is an interface deficiency and landmine. To clean this up, replace the iop_unlock method with an iop_release method that is specific to transaction cancel. The existing iop_committing method occurs at the same time as iop_unlock in the commit path and there is no need for two separate callbacks here. Overload the iop_committing method with the current commit time iop_unlock implementations to eliminate the need for the latter and further simplify the interface. Signed-off-by: Christoph Hellwig <hch@lst.de> 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>
2019-06-29 10:27:32 +08:00
.iop_release = xfs_icreate_item_release,
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
};
/*
* Initialize the inode log item for a newly allocated (in-core) inode.
*
* Inode extents can only reside within an AG. Hence specify the starting
* block for the inode chunk by offset within an AG as well as the
* length of the allocated extent.
*
* This joins the item to the transaction and marks it dirty so
* that we don't need a separate call to do this, nor does the
* caller need to know anything about the icreate item.
*/
void
xfs_icreate_log(
struct xfs_trans *tp,
xfs_agnumber_t agno,
xfs_agblock_t agbno,
unsigned int count,
unsigned int inode_size,
xfs_agblock_t length,
unsigned int generation)
{
struct xfs_icreate_item *icp;
xfs: rename _zone variables to _cache Now that we've gotten rid of the kmem_zone_t typedef, rename the variables to _cache since that's what they are. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
2021-10-13 02:09:23 +08:00
icp = kmem_cache_zalloc(xfs_icreate_cache, GFP_KERNEL | __GFP_NOFAIL);
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE,
&xfs_icreate_item_ops);
icp->ic_format.icl_type = XFS_LI_ICREATE;
icp->ic_format.icl_size = 1; /* single vector */
icp->ic_format.icl_ag = cpu_to_be32(agno);
icp->ic_format.icl_agbno = cpu_to_be32(agbno);
icp->ic_format.icl_count = cpu_to_be32(count);
icp->ic_format.icl_isize = cpu_to_be32(inode_size);
icp->ic_format.icl_length = cpu_to_be32(length);
icp->ic_format.icl_gen = cpu_to_be32(generation);
xfs_trans_add_item(tp, &icp->ic_item);
tp->t_flags |= XFS_TRANS_DIRTY;
xfs: get rid of the log item descriptor It's just a connector between a transaction and a log item. There's a 1:1 relationship between a log item descriptor and a log item, and a 1:1 relationship between a log item descriptor and a transaction. Both relationships are created and terminated at the same time, so why do we even have the descriptor? Replace it with a specific list_head in the log item and a new log item dirtied flag to replace the XFS_LID_DIRTY flag. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> [darrick: fix up deferred agfl intent finish_item use of LID_DIRTY] Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-05-09 22:49:37 +08:00
set_bit(XFS_LI_DIRTY, &icp->ic_item.li_flags);
xfs: Inode create log items Introduce the inode create log item type for logical inode create logging. Instead of logging the changes in buffers, pass the range to be initialised through the log by a new transaction type. This reduces the amount of log space required to record initialisation during allocation from about 128 bytes per inode to a small fixed amount per inode extent to be initialised. This requires a new log item type to track it through the log and the AIL. This is a relatively simple item - most callbacks are noops as this item has the same life cycle as the transaction. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-06-27 14:04:53 +08:00
}
xfs: refactor log recovery item sorting into a generic dispatch structure Create a generic dispatch structure to delegate recovery of different log item types into various code modules. This will enable us to move code specific to a particular log item type out of xfs_log_recover.c and into the log item source. The first operation we virtualize is the log item sorting. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2020-05-02 07:00:45 +08:00
static enum xlog_recover_reorder
xlog_recover_icreate_reorder(
struct xlog_recover_item *item)
{
/*
* Inode allocation buffers must be replayed before subsequent inode
* items try to modify those buffers. ICREATE items are the logical
* equivalent of logging a newly initialized inode buffer, so recover
* these at the same time that we recover logged buffers.
*/
return XLOG_REORDER_BUFFER_LIST;
}
xfs: refactor log recovery icreate item dispatch for pass2 commit functions Move the log icreate item pass2 commit code into the per-item source code files and use the dispatch function to call it. We do these one at a time because there's a lot of code to move. No functional changes. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2020-05-02 07:00:48 +08:00
/*
* This routine is called when an inode create format structure is found in a
* committed transaction in the log. It's purpose is to initialise the inodes
* being allocated on disk. This requires us to get inode cluster buffers that
* match the range to be initialised, stamped with inode templates and written
* by delayed write so that subsequent modifications will hit the cached buffer
* and only need writing out at the end of recovery.
*/
STATIC int
xlog_recover_icreate_commit_pass2(
struct xlog *log,
struct list_head *buffer_list,
struct xlog_recover_item *item,
xfs_lsn_t lsn)
{
struct xfs_mount *mp = log->l_mp;
struct xfs_icreate_log *icl;
struct xfs_ino_geometry *igeo = M_IGEO(mp);
xfs_agnumber_t agno;
xfs_agblock_t agbno;
unsigned int count;
unsigned int isize;
xfs_agblock_t length;
int bb_per_cluster;
int cancel_count;
int nbufs;
int i;
icl = (struct xfs_icreate_log *)item->ri_buf[0].i_addr;
if (icl->icl_type != XFS_LI_ICREATE) {
xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad type");
return -EINVAL;
}
if (icl->icl_size != 1) {
xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad icl size");
return -EINVAL;
}
agno = be32_to_cpu(icl->icl_ag);
if (agno >= mp->m_sb.sb_agcount) {
xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agno");
return -EINVAL;
}
agbno = be32_to_cpu(icl->icl_agbno);
if (!agbno || agbno == NULLAGBLOCK || agbno >= mp->m_sb.sb_agblocks) {
xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agbno");
return -EINVAL;
}
isize = be32_to_cpu(icl->icl_isize);
if (isize != mp->m_sb.sb_inodesize) {
xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad isize");
return -EINVAL;
}
count = be32_to_cpu(icl->icl_count);
if (!count) {
xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad count");
return -EINVAL;
}
length = be32_to_cpu(icl->icl_length);
if (!length || length >= mp->m_sb.sb_agblocks) {
xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad length");
return -EINVAL;
}
/*
* The inode chunk is either full or sparse and we only support
* m_ino_geo.ialloc_min_blks sized sparse allocations at this time.
*/
if (length != igeo->ialloc_blks &&
length != igeo->ialloc_min_blks) {
xfs_warn(log->l_mp,
xfs: cleanup __FUNCTION__ usage __FUNCTION__ exists only for backwards compatibility reasons with old gcc versions. Replace it with __func__. Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-10 01:14:45 +08:00
"%s: unsupported chunk length", __func__);
xfs: refactor log recovery icreate item dispatch for pass2 commit functions Move the log icreate item pass2 commit code into the per-item source code files and use the dispatch function to call it. We do these one at a time because there's a lot of code to move. No functional changes. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2020-05-02 07:00:48 +08:00
return -EINVAL;
}
/* verify inode count is consistent with extent length */
if ((count >> mp->m_sb.sb_inopblog) != length) {
xfs_warn(log->l_mp,
"%s: inconsistent inode count and chunk length",
xfs: cleanup __FUNCTION__ usage __FUNCTION__ exists only for backwards compatibility reasons with old gcc versions. Replace it with __func__. Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-10 01:14:45 +08:00
__func__);
xfs: refactor log recovery icreate item dispatch for pass2 commit functions Move the log icreate item pass2 commit code into the per-item source code files and use the dispatch function to call it. We do these one at a time because there's a lot of code to move. No functional changes. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2020-05-02 07:00:48 +08:00
return -EINVAL;
}
/*
* The icreate transaction can cover multiple cluster buffers and these
* buffers could have been freed and reused. Check the individual
* buffers for cancellation so we don't overwrite anything written after
* a cancellation.
*/
bb_per_cluster = XFS_FSB_TO_BB(mp, igeo->blocks_per_cluster);
nbufs = length / igeo->blocks_per_cluster;
for (i = 0, cancel_count = 0; i < nbufs; i++) {
xfs_daddr_t daddr;
daddr = XFS_AGB_TO_DADDR(mp, agno,
agbno + i * igeo->blocks_per_cluster);
if (xlog_is_buffer_cancelled(log, daddr, bb_per_cluster))
cancel_count++;
}
/*
* We currently only use icreate for a single allocation at a time. This
* means we should expect either all or none of the buffers to be
* cancelled. Be conservative and skip replay if at least one buffer is
* cancelled, but warn the user that something is awry if the buffers
* are not consistent.
*
* XXX: This must be refined to only skip cancelled clusters once we use
* icreate for multiple chunk allocations.
*/
ASSERT(!cancel_count || cancel_count == nbufs);
if (cancel_count) {
if (cancel_count != nbufs)
xfs_warn(mp,
"WARNING: partial inode chunk cancellation, skipped icreate.");
trace_xfs_log_recover_icreate_cancel(log, icl);
return 0;
}
trace_xfs_log_recover_icreate_recover(log, icl);
return xfs_ialloc_inode_init(mp, NULL, buffer_list, count, agno, agbno,
length, be32_to_cpu(icl->icl_gen));
}
xfs: refactor log recovery item sorting into a generic dispatch structure Create a generic dispatch structure to delegate recovery of different log item types into various code modules. This will enable us to move code specific to a particular log item type out of xfs_log_recover.c and into the log item source. The first operation we virtualize is the log item sorting. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2020-05-02 07:00:45 +08:00
const struct xlog_recover_item_ops xlog_icreate_item_ops = {
.item_type = XFS_LI_ICREATE,
.reorder = xlog_recover_icreate_reorder,
xfs: refactor log recovery icreate item dispatch for pass2 commit functions Move the log icreate item pass2 commit code into the per-item source code files and use the dispatch function to call it. We do these one at a time because there's a lot of code to move. No functional changes. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2020-05-02 07:00:48 +08:00
.commit_pass2 = xlog_recover_icreate_commit_pass2,
xfs: refactor log recovery item sorting into a generic dispatch structure Create a generic dispatch structure to delegate recovery of different log item types into various code modules. This will enable us to move code specific to a particular log item type out of xfs_log_recover.c and into the log item source. The first operation we virtualize is the log item sorting. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2020-05-02 07:00:45 +08:00
};