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Darrick J. Wong bbc256bf90 xfs: fix overfilling of reserve pool 
[ Upstream commit 82be38bcf8 ]

Due to cycling of m_sb_lock, it's possible for multiple callers of
xfs_reserve_blocks to race at changing the pool size, subtracting blocks
from fdblocks, and actually putting it in the pool.  The result of all
this is that we can overfill the reserve pool to hilarious levels.

xfs_mod_fdblocks, when called with a positive value, already knows how
to take freed blocks and either fill the reserve until it's full, or put
them in fdblocks.  Use that instead of setting m_resblks_avail directly.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-25 11:40:48 +02:00
..
libxfs xfs: fix perag reference leak on iteration race with growfs 2022-07-29 17:25:09 +02:00
scrub xfs: fix perag structure refcounting error when scrub fails 2021-08-20 13:20:33 -07:00
Kconfig xfs: fix Kconfig asking about XFS_SUPPORT_V4 when XFS_FS=n 2020-10-16 15:34:28 -07:00
kmem.c xfs: replace kmem_alloc_large() with kvmalloc() 2021-08-09 15:57:43 -07:00
kmem.h xfs: replace kmem_alloc_large() with kvmalloc() 2021-08-09 15:57:43 -07:00
Makefile
mrlock.h
xfs.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 xfs: punch out data fork delalloc blocks on COW writeback failure 2022-07-02 16:41:13 +02:00
xfs_aops.h
xfs_attr_inactive.c xfs: convert bp->b_bn references to xfs_buf_daddr() 2021-08-19 10:07:15 -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 xfs: drop async cache flushes from CIL commits. 2022-07-21 21:24:15 +02:00
xfs_bmap_item.c xfs: refactor xfs_iget calls from log intent recovery 2021-08-09 15:57:59 -07:00
xfs_bmap_item.h
xfs_bmap_util.c New code for 5.15: 2021-09-02 08:26:03 -07:00
xfs_bmap_util.h
xfs_buf.c New code for 5.15: 2021-09-02 08:26:03 -07:00
xfs_buf.h xfs: rename buffer cache index variable b_bn 2021-08-19 10:07:15 -07:00
xfs_buf_item.c xfs: convert bp->b_bn references to xfs_buf_daddr() 2021-08-19 10:07:15 -07:00
xfs_buf_item.h
xfs_buf_item_recover.c xfs: check sb_meta_uuid for dabuf buffer recovery 2022-07-02 16:41:13 +02:00
xfs_dir2_readdir.c xfs: replace XFS_FORCED_SHUTDOWN with xfs_is_shutdown 2021-08-19 10:07:13 -07:00
xfs_discard.c xfs: convert mount flags to features 2021-08-19 10:07:12 -07:00
xfs_discard.h
xfs_dquot.c xfs: replace xfs_sb_version checks with feature flag checks 2021-08-19 10:07:12 -07:00
xfs_dquot.h xfs: queue inactivation immediately when quota is nearing enforcement 2021-08-09 10:52:18 -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_item_recover.c xfs: replace xfs_sb_version checks with feature flag checks 2021-08-19 10:07:12 -07:00
xfs_error.c xfs: convert bp->b_bn references to xfs_buf_daddr() 2021-08-19 10:07:15 -07:00
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: use kmem_cache_free() for kmem_cache objects 2022-07-02 16:41:12 +02:00
xfs_extfree_item.h
xfs_file.c iomap: Add done_before argument to iomap_dio_rw 2022-05-01 17:22:32 +02:00
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: replace xfs_sb_version checks with feature flag checks 2021-08-19 10:07:12 -07:00
xfs_fsmap.h xfs: fix deadlock and streamline xfs_getfsmap performance 2020-10-07 08:40:29 -07:00
xfs_fsops.c xfs: fix overfilling of reserve pool 2022-08-25 11:40:48 +02:00
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: replace XFS_FORCED_SHUTDOWN with xfs_is_shutdown 2021-08-19 10:07:13 -07:00
xfs_icache.c xfs: flush inodegc workqueue tasks before cancel 2022-08-25 11:40:46 +02:00
xfs_icache.h xfs: throttle inode inactivation queuing on memory reclaim 2021-08-09 11:13:17 -07:00
xfs_icreate_item.c xfs: cleanup __FUNCTION__ usage 2021-08-11 09:13:12 -07:00
xfs_icreate_item.h
xfs_inode.c xfs: reserve quota for target dir expansion when renaming files 2022-08-25 11:40:47 +02:00
xfs_inode.h New code for 5.15: 2021-09-02 08:26:03 -07:00
xfs_inode_item.c xfs: replace xfs_sb_version checks with feature flag checks 2021-08-19 10:07:12 -07:00
xfs_inode_item.h xfs: xfs_log_force_lsn isn't passed a LSN 2021-06-21 10:12:33 -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_ioctl.c xfs: prevent a WARN_ONCE() in xfs_ioc_attr_list() 2022-07-29 17:25:09 +02:00
xfs_ioctl.h xfs: prevent a WARN_ONCE() in xfs_ioc_attr_list() 2022-07-29 17:25:09 +02:00
xfs_ioctl32.c xfs: convert xfs_fs_geometry to use mount feature checks 2021-08-19 10:07:13 -07:00
xfs_ioctl32.h xfs: convert to fileattr 2021-04-12 15:04:29 +02:00
xfs_iomap.c xfs: only set IOMAP_F_SHARED when providing a srcmap to a write 2021-08-23 17:32:51 -07:00
xfs_iomap.h
xfs_iops.c xfs: fix I_DONTCACHE 2021-08-24 19:13:04 -07:00
xfs_iops.h xfs: support idmapped mounts 2021-01-24 14:43:46 +01:00
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: support idmapped mounts 2021-01-24 14:43:46 +01:00
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. 2022-07-21 21:24:15 +02:00
xfs_log.c xfs: drop async cache flushes from CIL commits. 2022-07-21 21:24:15 +02:00
xfs_log.h xfs: AIL needs asynchronous CIL forcing 2021-08-16 12:09:30 -07:00
xfs_log_cil.c xfs: drop async cache flushes from CIL commits. 2022-07-21 21:24:15 +02:00
xfs_log_priv.h xfs: drop async cache flushes from CIL commits. 2022-07-21 21:24:15 +02:00
xfs_log_recover.c xfs: only run COW extent recovery when there are no live extents 2022-07-21 21:24:14 +02:00
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: don't include bnobt blocks when reserving free block pool 2022-07-21 21:24:15 +02:00
xfs_mount.h xfs: don't include bnobt blocks when reserving free block pool 2022-07-21 21:24:15 +02:00
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: replace XFS_FORCED_SHUTDOWN with xfs_is_shutdown 2021-08-19 10:07:13 -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: replace XFS_FORCED_SHUTDOWN with xfs_is_shutdown 2021-08-19 10:07:13 -07:00
xfs_qm.h xfs: remove support for disabling quota accounting on a mounted file system 2021-08-06 11:05:36 -07:00
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: replace xfs_sb_version checks with feature flag checks 2021-08-19 10:07:12 -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: replace xfs_sb_version checks with feature flag checks 2021-08-19 10:07:12 -07:00
xfs_refcount_item.h
xfs_reflink.c xfs: only run COW extent recovery when there are no live extents 2022-07-21 21:24:14 +02:00
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: replace xfs_sb_version checks with feature flag checks 2021-08-19 10:07:12 -07:00
xfs_rmap_item.h
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: 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: only run COW extent recovery when there are no live extents 2022-07-21 21:24:14 +02:00
xfs_super.h xfs: remove xfs_blkdev_issue_flush 2021-06-21 10:05:46 -07:00
xfs_symlink.c fs: port higher-level mapping helpers 2022-07-02 16:41:16 +02:00
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: AIL needs asynchronous CIL forcing 2021-08-16 12:09:30 -07:00
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: convert bp->b_bn references to xfs_buf_daddr() 2021-08-19 10:07:15 -07:00
xfs_trans.c xfs: reserve quota for dir expansion when linking/unlinking files 2022-08-25 11:40:47 +02:00
xfs_trans.h xfs: reserve quota for dir expansion when linking/unlinking files 2022-08-25 11:40:47 +02:00
xfs_trans_ail.c xfs: replace XFS_FORCED_SHUTDOWN with xfs_is_shutdown 2021-08-19 10:07:13 -07:00
xfs_trans_buf.c xfs: introduce xfs_buf_daddr() 2021-08-19 10:07:14 -07:00
xfs_trans_dquot.c xfs: replace xfs_sb_version checks with feature flag checks 2021-08-19 10:07:12 -07:00
xfs_trans_priv.h
xfs_xattr.c xfs: prevent metadata files from being inactivated 2021-03-25 16:47:50 -07:00