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linux/fs/xfs
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Dave Chinner 9a5280b312 xfs: reorder iunlink remove operation in xfs_ifree 
The O_TMPFILE creation implementation creates a specific order of
operations for inode allocation/freeing and unlinked list
modification. Currently both are serialised by the AGI, so the order
doesn't strictly matter as long as the are both in the same
transaction.

However, if we want to move the unlinked list insertions largely out
from under the AGI lock, then we have to be concerned about the
order in which we do unlinked list modification operations.
O_TMPFILE creation tells us this order is inode allocation/free,
then unlinked list modification.

Change xfs_ifree() to use this same ordering on unlinked list
removal. This way we always guarantee that when we enter the
iunlinked list removal code from this path, we already have the AGI
locked and we don't have to worry about lock nesting AGI reads
inside unlink list locks because it's already locked and attached to
the transaction.

We can do this safely as the inode freeing and unlinked list removal
are done in the same transaction and hence are atomic operations
with respect to log recovery.


Reported-by: Frank Hofmann <fhofmann@cloudflare.com>
Fixes: 298f7bec50 ("xfs: pin inode backing buffer to the inode log item")
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2022-04-21 08:45:16 +10:00
..
libxfs Bug fixes for 5.18: 2022-04-01 19:30:44 -07:00
scrub treewide: Replace zero-length arrays with flexible-array members 2022-02-17 07:00:39 -06:00
Kconfig
kmem.c mm: introduce memalloc_retry_wait() 2022-01-15 16:30:29 +02:00
kmem.h xfs: remove kmem_zone typedef 2021-10-22 16:00:31 -07:00
Makefile
mrlock.h
xfs_acl.c overlayfs update for 5.15 2021-09-02 09:21:27 -07:00
xfs_acl.h vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
xfs_aops.c fs: Convert __set_page_dirty_no_writeback to noop_dirty_folio 2022-03-16 13:37:05 -04:00
xfs_aops.h
xfs_attr_inactive.c xfs: rename _zone variables to _cache 2021-10-22 16:04:20 -07:00
xfs_attr_list.c xfs: replace XFS_FORCED_SHUTDOWN with xfs_is_shutdown 2021-08-19 10:07:13 -07:00
xfs_bio_io.c Bug fixes for 5.18: 2022-04-01 19:30:44 -07:00
xfs_bmap_item.c xfs: log items should have a xlog pointer, not a mount 2022-03-20 08:59:49 -07:00
xfs_bmap_item.h xfs: rename _zone variables to _cache 2021-10-22 16:04:20 -07:00
xfs_bmap_util.c xfs: set prealloc flag in xfs_alloc_file_space() 2022-02-01 14:14:48 -08:00
xfs_bmap_util.h xfs: kill the XFS_IOC_{ALLOC,FREE}SP* ioctls 2022-01-17 09:16:41 -08:00
xfs_buf_item_recover.c xfs: check sb_meta_uuid for dabuf buffer recovery 2021-12-21 09:49:41 -08:00
xfs_buf_item.c xfs: log items should have a xlog pointer, not a mount 2022-03-20 08:59:49 -07:00
xfs_buf_item.h xfs: rename _zone variables to _cache 2021-10-22 16:04:20 -07:00
xfs_buf.c xfs: convert buffer flags to unsigned. 2022-04-21 08:44:59 +10:00
xfs_buf.h xfs: convert buffer flags to unsigned. 2022-04-21 08:44:59 +10:00
xfs_dir2_readdir.c xfs: take the ILOCK when readdir inspects directory mapping data 2022-01-11 15:11:04 -08:00
xfs_discard.c xfs: convert mount flags to features 2021-08-19 10:07:12 -07:00
xfs_discard.h
xfs_dquot_item_recover.c xfs: replace xfs_sb_version checks with feature flag checks 2021-08-19 10:07:12 -07:00
xfs_dquot_item.c xfs: remove support for disabling quota accounting on a mounted file system 2021-08-06 11:05:36 -07:00
xfs_dquot_item.h xfs: remove support for disabling quota accounting on a mounted file system 2021-08-06 11:05:36 -07:00
xfs_dquot.c xfs: hold quota inode ILOCK_EXCL until the end of dqalloc 2022-01-06 10:43:30 -08:00
xfs_dquot.h xfs: queue inactivation immediately when quota is nearing enforcement 2021-08-09 10:52:18 -07:00
xfs_error.c xfs: sysfs: use default_groups in kobj_type 2022-01-06 10:43:30 -08:00
xfs_error.h xfs: add trace point for fs shutdown 2021-08-18 18:46:00 -07:00
xfs_export.c xfs: convert remaining mount flags to state flags 2021-08-19 10:07:13 -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 xfs: log items should have a xlog pointer, not a mount 2022-03-20 08:59:49 -07:00
xfs_extfree_item.h xfs: rename _zone variables to _cache 2021-10-22 16:04:20 -07:00
xfs_file.c xfs: ensure log flush at the end of a synchronous fallocate call 2022-02-01 14:14:48 -08:00
xfs_filestream.c xfs: convert remaining mount flags to state flags 2021-08-19 10:07:13 -07:00
xfs_filestream.h xfs: convert mount flags to features 2021-08-19 10:07:12 -07:00
xfs_fsmap.c xfs: don't generate selinux audit messages for capability testing 2022-03-09 10:32:06 -08:00
xfs_fsmap.h
xfs_fsops.c xfs: xfs_do_force_shutdown needs to block racing shutdowns 2022-03-29 18:22:01 -07:00
xfs_fsops.h xfs: get rid of xfs_growfs_{data,log}_t 2021-02-03 09:18:50 -08:00
xfs_globals.c
xfs_health.c xfs: replace XFS_FORCED_SHUTDOWN with xfs_is_shutdown 2021-08-19 10:07:13 -07:00
xfs_icache.c Bug fixes for 5.18: 2022-04-01 19:30:44 -07:00
xfs_icache.h xfs: throttle inode inactivation queuing on memory reclaim 2021-08-09 11:13:17 -07:00
xfs_icreate_item.c xfs: rename _zone variables to _cache 2021-10-22 16:04:20 -07:00
xfs_icreate_item.h xfs: rename _zone variables to _cache 2021-10-22 16:04:20 -07:00
xfs_inode_item_recover.c xfs: replace xfs_sb_version checks with feature flag checks 2021-08-19 10:07:12 -07:00
xfs_inode_item.c xfs: aborting inodes on shutdown may need buffer lock 2022-03-29 18:21:59 -07:00
xfs_inode_item.h xfs: aborting inodes on shutdown may need buffer lock 2022-03-29 18:21:59 -07:00
xfs_inode.c xfs: reorder iunlink remove operation in xfs_ifree 2022-04-21 08:45:16 +10:00
xfs_inode.h xfs: constify the name argument to various directory functions 2022-03-14 10:23:17 -07:00
xfs_ioctl32.c x86: Remove toolchain check for X32 ABI capability 2022-03-15 10:32:48 +01:00
xfs_ioctl32.h xfs: remove unused xfs_ioctl32.h declarations 2022-01-18 10:18:36 -08:00
xfs_ioctl.c xfs: don't generate selinux audit messages for capability testing 2022-03-09 10:32:06 -08:00
xfs_ioctl.h xfs: kill the XFS_IOC_{ALLOC,FREE}SP* ioctls 2022-01-17 09:16:41 -08:00
xfs_iomap.c fsdax: shift partition offset handling into the file systems 2021-12-04 08:58:54 -08:00
xfs_iomap.h iomap: add a IOMAP_DAX flag 2021-12-04 08:58:53 -08:00
xfs_iops.c xfs: refactor user/group quota chown in xfs_setattr_nonsize 2022-03-14 10:23:17 -07:00
xfs_iops.h
xfs_itable.c xfs: replace xfs_sb_version checks with feature flag checks 2021-08-19 10:07:12 -07:00
xfs_itable.h
xfs_iwalk.c xfs: avoid buffer deadlocks when walking fs inodes 2021-08-09 11:13:16 -07:00
xfs_iwalk.h
xfs_linux.h xfs: drop async cache flushes from CIL commits. 2022-03-29 18:22:02 -07:00
xfs_log_cil.c xfs: drop async cache flushes from CIL commits. 2022-03-29 18:22:02 -07:00
xfs_log_priv.h xfs: drop async cache flushes from CIL commits. 2022-03-29 18:22:02 -07:00
xfs_log_recover.c xfs: log shutdown triggers should only shut down the log 2022-03-29 18:22:01 -07:00
xfs_log.c Bug fixes for 5.18: 2022-04-01 19:30:44 -07:00
xfs_log.h xfs: AIL needs asynchronous CIL forcing 2021-08-16 12:09:30 -07:00
xfs_message.c
xfs_message.h once: implement DO_ONCE_LITE for non-fast-path "do once" functionality 2021-06-28 15:54:57 -07:00
xfs_mount.c xfs: log shutdown triggers should only shut down the log 2022-03-29 18:22:01 -07:00
xfs_mount.h xfs: don't include bnobt blocks when reserving free block pool 2022-03-28 08:38:43 -07:00
xfs_mru_cache.c xfs: rename _zone variables to _cache 2021-10-22 16:04:20 -07:00
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: use setattr_copy to set vfs inode attributes 2022-03-14 10:23:16 -07:00
xfs_pnfs.h
xfs_pwork.c
xfs_pwork.h
xfs_qm_bhv.c xfs: replace xfs_sb_version checks with feature flag checks 2021-08-19 10:07:12 -07:00
xfs_qm_syscalls.c xfs: fix quotaoff mutex usage now that we don't support disabling it 2021-12-21 09:49:41 -08:00
xfs_qm.c xfs: xfs_is_shutdown vs xlog_is_shutdown cage fight 2022-03-20 08:59:50 -07:00
xfs_qm.h xfs: rename _zone variables to _cache 2021-10-22 16:04:20 -07:00
xfs_quota.h xfs: queue inactivation immediately when quota is nearing enforcement 2021-08-09 10:52:18 -07:00
xfs_quotaops.c xfs: remove the active vs running quota differentiation 2021-08-06 11:05:37 -07:00
xfs_refcount_item.c xfs: log items should have a xlog pointer, not a mount 2022-03-20 08:59:49 -07:00
xfs_refcount_item.h xfs: rename _zone variables to _cache 2021-10-22 16:04:20 -07:00
xfs_reflink.c xfs: add missing cmap->br_state = XFS_EXT_NORM update 2022-03-09 10:32:06 -08:00
xfs_reflink.h xfs: convert xfs_sb_version_has checks to use mount features 2021-08-19 10:07:14 -07:00
xfs_rmap_item.c xfs: log items should have a xlog pointer, not a mount 2022-03-20 08:59:49 -07:00
xfs_rmap_item.h xfs: rename _zone variables to _cache 2021-10-22 16:04:20 -07:00
xfs_rtalloc.c xfs: replace xfs_sb_version checks with feature flag checks 2021-08-19 10:07:12 -07:00
xfs_rtalloc.h xfs: make the record pointer passed to query_range functions const 2021-08-18 18:46:01 -07:00
xfs_stats.c
xfs_stats.h
xfs_super.c xfs: don't report reserved bnobt space as available 2022-03-28 08:39:10 -07:00
xfs_super.h xfs: remove xfs_blkdev_issue_flush 2021-06-21 10:05:46 -07:00
xfs_symlink.c New code for 5.17: 2022-01-11 15:01:50 -08:00
xfs_symlink.h
xfs_sysctl.c xfs: restore speculative_cow_prealloc_lifetime sysctl 2021-02-24 10:16:08 -08:00
xfs_sysctl.h
xfs_sysfs.c xfs: sysfs: use default_groups in kobj_type 2022-01-06 10:43:30 -08:00
xfs_sysfs.h
xfs_trace.c xfs: add trace point for fs shutdown 2021-08-18 18:46:00 -07:00
xfs_trace.h xfs: log items should have a xlog pointer, not a mount 2022-03-20 08:59:49 -07:00
xfs_trans_ail.c xfs: log shutdown triggers should only shut down the log 2022-03-29 18:22:01 -07:00
xfs_trans_buf.c xfs: introduce xfs_buf_daddr() 2021-08-19 10:07:14 -07:00
xfs_trans_dquot.c xfs: rename _zone variables to _cache 2021-10-22 16:04:20 -07:00
xfs_trans_priv.h xfs: AIL should be log centric 2022-03-20 08:59:49 -07:00
xfs_trans.c xfs: xfs_trans_commit() path must check for log shutdown 2022-03-29 18:22:01 -07:00
xfs_trans.h xfs: convert buffer flags to unsigned. 2022-04-21 08:44:59 +10:00
xfs_xattr.c xfs: prevent metadata files from being inactivated 2021-03-25 16:47:50 -07:00
xfs.h