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OpenCloudOS-Kernel/fs/xfs
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Dave Chinner 89b1f55a29 xfs: collapse AG selection for inode allocation 
xfs_dialloc_select_ag() does a lot of repetitive work. It first
calls xfs_ialloc_ag_select() to select the AG to start allocation
attempts in, which can do up to two entire loops across the perags
that inodes can be allocated in. This is simply checking if there is
spce available to allocate inodes in an AG, and it returns when it
finds the first candidate AG.

xfs_dialloc_select_ag() then does it's own iterative walk across
all the perags locking the AGIs and trying to allocate inodes from
the locked AG. It also doesn't limit the search to mp->m_maxagi,
so it will walk all AGs whether they can allocate inodes or not.

Hence if we are really low on inodes, we could do almost 3 entire
walks across the whole perag range before we find an allocation
group we can allocate inodes in or report ENOSPC.

Because xfs_ialloc_ag_select() returns on the first candidate AG it
finds, we can simply do these checks directly in
xfs_dialloc_select_ag() before we lock and try to allocate inodes.
This reduces the inode allocation pass down to 2 perag sweeps at
most - one for aligned inode cluster allocation and if we can't
allocate full, aligned inode clusters anywhere we'll do another pass
trying to do sparse inode cluster allocation.

This also removes a big chunk of duplicate code.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
 		2021-06-02 10:48:24 +10:00
..
libxfs xfs: collapse AG selection for inode allocation 2021-06-02 10:48:24 +10:00
scrub xfs: remove agno from btree cursor 2021-06-02 10:48:24 +10:00
Kconfig xfs: fix Kconfig asking about XFS_SUPPORT_V4 when XFS_FS=n 2020-10-16 15:34:28 -07:00
Makefile xfs: refactor log recovery item sorting into a generic dispatch structure 2020-05-08 08:49:58 -07:00
kmem.c xfs: remove kmem_realloc() 2020-09-06 18:05:51 -07:00
kmem.h xfs: Remove kmem_zalloc_large() 2020-09-15 20:52:41 -07:00
mrlock.h
…
xfs.h
…
xfs_acl.c xfs: support idmapped mounts 2021-01-24 14:43:46 +01:00
xfs_acl.h fs: make helpers idmap mount aware 2021-01-24 14:27:20 +01:00
xfs_aops.c iomap: remove unused private field from ioend 2021-05-04 08:54:29 -07:00
xfs_aops.h
…
xfs_attr_inactive.c xfs: cleanup xfs_idestroy_fork 2020-05-19 09:40:59 -07:00
xfs_attr_list.c xfs: rename and simplify xfs_bmap_one_block 2021-04-15 09:35:50 -07:00
xfs_bio_io.c block: Add bio_max_segs 2021-02-26 15:49:51 -07:00
xfs_bmap_item.c treewide: Change list_sort to use const pointers 2021-04-08 16:04:22 -07:00
xfs_bmap_item.h xfs: refactor intent item RECOVERED flag into the log item 2020-05-08 08:50:01 -07:00
xfs_bmap_util.c xfs: remove XFS_IFEXTENTS 2021-04-15 09:35:51 -07:00
xfs_bmap_util.h
…
xfs_buf.c xfs: move xfs_perag_get/put to xfs_ag.[ch] 2021-06-02 10:48:24 +10:00
xfs_buf.h xfs: don't drain buffer lru on freeze and read-only remount 2021-01-22 16:54:50 -08:00
xfs_buf_item.c xfs: optimise xfs_buf_item_size/format for contiguous regions 2021-03-25 16:47:51 -07:00
xfs_buf_item.h xfs: move the buffer retry logic to xfs_buf.c 2020-09-15 20:52:38 -07:00
xfs_buf_item_recover.c xfs: fix finobt btree block recovery ordering 2020-09-30 07:28:52 -07:00
xfs_dir2_readdir.c xfs: remove XFS_IFINLINE 2021-04-15 09:35:51 -07:00
xfs_discard.c xfs: convert allocbt cursors to use perags 2021-06-02 10:48:24 +10:00
xfs_discard.h
…
xfs_dquot.c xfs: move the XFS_IFEXTENTS check into xfs_iread_extents 2021-04-15 09:35:50 -07:00
xfs_dquot.h xfs: refactor default quota grace period setting code 2020-09-15 20:52:40 -07:00
xfs_dquot_item.c xfs: stop using q_core.d_id in the quota code 2020-07-28 20:24:14 -07:00
xfs_dquot_item.h xfs: factor out quotaoff intent AIL removal and memory free 2020-03-18 08:12:23 -07:00
xfs_dquot_item_recover.c xfs: rename the ondisk dquot d_flags to d_type 2020-07-28 20:24:14 -07:00
xfs_error.c xfs: add error injection for per-AG resv failure 2021-03-25 16:47:53 -07:00
xfs_error.h xfs: xfs_buf_corruption_error should take __this_address 2020-03-12 07:58:12 -07:00
xfs_export.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_export.h
…
xfs_extent_busy.c xfs: pass perags through to the busy extent code 2021-06-02 10:48:24 +10:00
xfs_extent_busy.h xfs: pass perags through to the busy extent code 2021-06-02 10:48:24 +10:00
xfs_extfree_item.c treewide: Change list_sort to use const pointers 2021-04-08 16:04:22 -07:00
xfs_extfree_item.h xfs: refactor intent item RECOVERED flag into the log item 2020-05-08 08:50:01 -07:00
xfs_file.c xfs: move the di_flags2 field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_filestream.c xfs: move xfs_perag_get/put to xfs_ag.[ch] 2021-06-02 10:48:24 +10:00
xfs_filestream.h xfs: move the di_flags field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_fsmap.c xfs: remove agno from btree cursor 2021-06-02 10:48:24 +10:00
xfs_fsmap.h xfs: fix deadlock and streamline xfs_getfsmap performance 2020-10-07 08:40:29 -07:00
xfs_fsops.c xfs: make for_each_perag... a first class citizen 2021-06-02 10:48:24 +10:00
xfs_fsops.h xfs: get rid of xfs_growfs_{data,log}_t 2021-02-03 09:18:50 -08:00
xfs_globals.c xfs: consolidate the eofblocks and cowblocks workers 2021-02-03 09:18:49 -08:00
xfs_health.c xfs: make for_each_perag... a first class citizen 2021-06-02 10:48:24 +10:00
xfs_icache.c xfs: make for_each_perag... a first class citizen 2021-06-02 10:48:24 +10:00
xfs_icache.h xfs: rename block gc start and stop functions 2021-02-03 09:18:50 -08:00
xfs_icreate_item.c xfs: Remove kmem_zone_zalloc() usage 2020-07-28 20:24:14 -07:00
xfs_icreate_item.h
…
xfs_inode.c xfs: simplify xfs_dialloc_select_ag() return values 2021-06-02 10:48:24 +10:00
xfs_inode.h xfs: move the di_crtime field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_inode_item.c xfs: rename struct xfs_legacy_ictimestamp 2021-04-22 18:29:25 -07:00
xfs_inode_item.h xfs: move the buffer retry logic to xfs_buf.c 2020-09-15 20:52:38 -07:00
xfs_inode_item_recover.c xfs: rename struct xfs_legacy_ictimestamp 2021-04-22 18:29:25 -07:00
xfs_ioctl.c New code for 5.13: 2021-04-29 10:43:51 -07:00
xfs_ioctl.h xfs: convert to fileattr 2021-04-12 15:04:29 +02:00
xfs_ioctl32.c xfs: convert to fileattr 2021-04-12 15:04:29 +02:00
xfs_ioctl32.h xfs: convert to fileattr 2021-04-12 15:04:29 +02:00
xfs_iomap.c xfs: remove XFS_IFEXTENTS 2021-04-15 09:35:51 -07:00
xfs_iomap.h
…
xfs_iops.c New code for 5.13: 2021-04-29 10:43:51 -07:00
xfs_iops.h xfs: support idmapped mounts 2021-01-24 14:43:46 +01:00
xfs_itable.c xfs: move the di_crtime field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_itable.h xfs: support idmapped mounts 2021-01-24 14:43:46 +01:00
xfs_iwalk.c xfs: use perag for ialloc btree cursors 2021-06-02 10:48:24 +10:00
xfs_iwalk.h
…
xfs_linux.h xfs: move the di_flags field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_log.c xfs: don't allow log writes if the data device is readonly 2021-05-04 08:43:27 -07:00
xfs_log.h xfs: cover the log during log quiesce 2021-01-22 16:54:51 -08:00
xfs_log_cil.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_log_priv.h xfs: Modify xlog_ticket_alloc() to use kernel's MM API 2020-07-28 20:24:14 -07:00
xfs_log_recover.c xfs: convert raw ag walks to use for_each_perag 2021-06-02 10:48:24 +10:00
xfs_message.c xfs: refactor ratelimited buffer error messages into helper 2020-05-07 08:27:46 -07:00
xfs_message.h treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
xfs_mount.c xfs: move perag structure and setup to libxfs/xfs_ag.[ch] 2021-06-02 10:48:24 +10:00
xfs_mount.h xfs: move perag structure and setup to libxfs/xfs_ag.[ch] 2021-06-02 10:48:24 +10:00
xfs_mru_cache.c xfs: set WQ_SYSFS on all workqueues in debug mode 2021-02-03 09:18:49 -08:00
xfs_mru_cache.h
…
xfs_ondisk.h xfs: rename struct xfs_legacy_ictimestamp 2021-04-22 18:29:25 -07:00
xfs_pnfs.c xfs: move the di_size field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_pnfs.h
…
xfs_pwork.c xfs: increase the default parallelism levels of pwork clients 2021-02-03 09:18:49 -08:00
xfs_pwork.h xfs: increase the default parallelism levels of pwork clients 2021-02-03 09:18:49 -08:00
xfs_qm.c xfs: move xfs_perag_get/put to xfs_ag.[ch] 2021-06-02 10:48:24 +10:00
xfs_qm.h xfs: refactor quota expiration timer modification 2020-09-15 20:52:40 -07:00
xfs_qm_bhv.c xfs: move the di_projid field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_qm_syscalls.c xfs: move the di_size field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_quota.h xfs: remove xfs_qm_vop_chown_reserve 2021-02-03 09:18:49 -08:00
xfs_quotaops.c xfs: move the di_nblocks field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_refcount_item.c treewide: Change list_sort to use const pointers 2021-04-08 16:04:22 -07:00
xfs_refcount_item.h xfs: refactor intent item RECOVERED flag into the log item 2020-05-08 08:50:01 -07:00
xfs_reflink.c xfs: convert refcount btree cursor to use perags 2021-06-02 10:48:24 +10:00
xfs_reflink.h xfs: move helpers that lock and unlock two inodes against userspace IO 2020-07-06 10:46:57 -07:00
xfs_rmap_item.c treewide: Change list_sort to use const pointers 2021-04-08 16:04:22 -07:00
xfs_rmap_item.h xfs: refactor intent item RECOVERED flag into the log item 2020-05-08 08:50:01 -07:00
xfs_rtalloc.c xfs: move the di_flags field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_rtalloc.h xfs: remove xfs_buf_t typedef 2020-12-16 16:07:34 -08:00
xfs_stats.c xfs: periodically relog deferred intent items 2020-10-07 08:40:28 -07:00
xfs_stats.h xfs: periodically relog deferred intent items 2020-10-07 08:40:28 -07:00
xfs_super.c xfs: move xfs_perag_get/put to xfs_ag.[ch] 2021-06-02 10:48:24 +10:00
xfs_super.h xfs: remove xfs_quiesce_attr declaration 2021-04-16 08:28:36 -07:00
xfs_symlink.c New code for 5.13: 2021-04-29 10:43:51 -07:00
xfs_symlink.h xfs: support idmapped mounts 2021-01-24 14:43:46 +01:00
xfs_sysctl.c xfs: restore speculative_cow_prealloc_lifetime sysctl 2021-02-24 10:16:08 -08:00
xfs_sysctl.h xfs: consolidate the eofblocks and cowblocks workers 2021-02-03 09:18:49 -08:00
xfs_sysfs.c
…
xfs_sysfs.h xfs: Fix UBSAN null-ptr-deref in xfs_sysfs_init 2020-08-07 11:50:17 -07:00
xfs_trace.c xfs: move perag structure and setup to libxfs/xfs_ag.[ch] 2021-06-02 10:48:24 +10:00
xfs_trace.h xfs: remove agno from btree cursor 2021-06-02 10:48:24 +10:00
xfs_trans.c xfs: update superblock counters correctly for !lazysbcount 2021-04-29 07:44:18 -07:00
xfs_trans.h xfs: remove obsolete AGF counter debugging 2021-04-29 07:44:18 -07:00
xfs_trans_ail.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_trans_buf.c xfs: remove xfs_buf_t typedef 2020-12-16 16:07:34 -08:00
xfs_trans_dquot.c xfs: shut down the filesystem if we screw up quota reservation 2021-02-03 09:18:49 -08:00
xfs_trans_priv.h xfs: refactor adding recovered intent items to the log 2020-05-08 08:50:00 -07:00
xfs_xattr.c xfs: prevent metadata files from being inactivated 2021-03-25 16:47:50 -07:00