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Omar Sandoval a769760826 xfs: don't check for AG deadlock for realtime files in bunmapi 
commit 69ffe5960d upstream.

Commit 5b094d6dac ("xfs: fix multi-AG deadlock in xfs_bunmapi") added
a check in __xfs_bunmapi() to stop early if we would touch multiple AGs
in the wrong order. However, this check isn't applicable for realtime
files. In most cases, it just makes us do unnecessary commits. However,
without the fix from the previous commit ("xfs: fix realtime file data
space leak"), if the last and second-to-last extents also happen to have
different "AG numbers", then the break actually causes __xfs_bunmapi()
to return without making any progress, which sends
xfs_itruncate_extents_flags() into an infinite loop.

Fixes: 5b094d6dac ("xfs: fix multi-AG deadlock in xfs_bunmapi")
Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-12 11:24:16 +01:00
..
libxfs xfs: don't check for AG deadlock for realtime files in bunmapi 2020-01-12 11:24:16 +01:00
Kconfig xfs: implement iomap based buffered write path 2016-06-21 09:53:44 +10:00
kmem.c xfs: remove kmem_zalloc_greedy 2017-10-08 10:26:11 +02:00
kmem.h xfs: remove kmem_zalloc_greedy 2017-10-08 10:26:11 +02:00
Makefile xfs: introduce the CoW fork 2016-10-04 18:06:40 -07:00
mrlock.h
uuid.c
uuid.h
xfs.h
xfs_acl.c xfs: don't change inode mode if ACL update fails 2017-10-27 10:38:10 +02:00
xfs_acl.h xfs: Don't clear SGID when inheriting ACLs 2017-07-27 15:08:03 -07:00
xfs_aops.c xfs: ubsan fixes 2018-02-03 17:05:40 +01:00
xfs_aops.h xfs: allocate delayed extents in CoW fork 2016-10-04 18:06:41 -07:00
xfs_attr.h xfs: remove put_value from attr ->put_listent context 2016-04-06 07:57:45 +10:00
xfs_attr_inactive.c xfs: reinit btree pointer on attr tree inactivation walk 2017-10-27 10:38:10 +02:00
xfs_attr_list.c xfs: make several functions static 2016-06-01 17:38:15 +10:00
xfs_bmap_item.c xfs: try to avoid blowing out the transaction reservation when bunmaping a shared extent 2017-09-20 08:19:57 +02:00
xfs_bmap_item.h xfs: log bmap intent items 2016-10-04 11:05:44 -07:00
xfs_bmap_util.c xfs: move more RT specific code under CONFIG_XFS_RT 2017-10-27 10:38:10 +02:00
xfs_bmap_util.h xfs: move more RT specific code under CONFIG_XFS_RT 2017-10-27 10:38:10 +02:00
xfs_buf.c xfs: fix use-after-free race in xfs_buf_rele 2019-11-28 18:28:28 +01:00
xfs_buf.h xfs: push buffer of flush locked dquot to avoid quotacheck deadlock 2017-09-20 08:19:57 +02:00
xfs_buf_item.c xfs: fix compiler warnings 2017-09-20 08:20:02 +02:00
xfs_buf_item.h xfs: remove unnecessary dirty bli format check for ordered bufs 2017-09-20 08:20:01 +02:00
xfs_dir2_readdir.c xfs: prevent multi-fsb dir readahead from reading random blocks 2017-06-07 12:07:51 +02:00
xfs_discard.c Force log to disk before reading the AGF during a fstrim 2018-05-30 07:50:40 +02:00
xfs_discard.h
xfs_dquot.c xfs: Properly retry failed dquot items in case of error during buffer writeback 2018-02-03 17:05:40 +01:00
xfs_dquot.h
xfs_dquot_item.c xfs: Properly retry failed dquot items in case of error during buffer writeback 2018-02-03 17:05:40 +01:00
xfs_dquot_item.h
xfs_error.c fs/xfs: Use %pS printk format for direct addresses 2017-10-27 10:38:09 +02:00
xfs_error.h xfs: simulate per-AG reservations being critically low 2016-10-05 16:26:31 -07:00
xfs_export.c xfs: abstract block export operations from nfsd layouts 2016-07-15 15:31:29 -04:00
xfs_export.h
xfs_extent_busy.c xfs: don't fail xfs_extent_busy allocation 2017-04-08 09:30:31 +02:00
xfs_extent_busy.h
xfs_extfree_item.c xfs: remove unnecessary parentheses from log redo item recovery functions 2016-08-03 12:29:32 +10:00
xfs_extfree_item.h xfs: refactor redo intent item processing 2016-08-03 11:23:49 +10:00
xfs_file.c xfs: prevent creating negative-sized file via INSERT_RANGE 2018-05-09 09:50:21 +02:00
xfs_filestream.c Merge branch 'xfs-4.9-log-recovery-fixes' into for-next 2016-10-03 09:56:28 +11:00
xfs_filestream.h
xfs_fsops.c xfs: use the actual AG length when reserving blocks 2017-01-12 11:39:44 +01:00
xfs_fsops.h xfs: preallocate blocks for worst-case btree expansion 2016-10-05 16:26:27 -07:00
xfs_globals.c xfs: garbage collect old cowextsz reservations 2016-10-05 16:26:28 -07:00
xfs_icache.c xfs: check for race with xfs_reclaim_inode() in xfs_ifree_cluster() 2017-09-20 08:20:01 +02:00
xfs_icache.h xfs: update ag iterator to support wait on new inodes 2017-06-07 12:07:52 +02:00
xfs_icreate_item.c
xfs_icreate_item.h
xfs_inode.c xfs: always free inline data before resetting inode fork during ifree 2018-02-03 17:05:38 +01:00
xfs_inode.h xfs: support ability to wait on new inodes 2017-06-07 12:07:51 +02:00
xfs_inode_item.c xfs: Don't log uninitialised fields in inode structures 2017-10-27 10:38:09 +02:00
xfs_inode_item.h xfs: remove timestamps from incore inode 2016-02-09 16:54:58 +11:00
xfs_ioctl.c xfs: validate bdev support for DAX inode flag 2017-10-05 09:44:03 +02:00
xfs_ioctl.h xfs: don't pass ioflags around in the ioctl path 2016-07-20 11:29:35 +10:00
xfs_ioctl32.c xfs: Fix bulkstat compat ioctls on x32 userspace. 2019-12-05 15:34:37 +01:00
xfs_ioctl32.h
xfs_iomap.c xfs: update i_size after unwritten conversion in dio completion 2017-10-27 10:38:09 +02:00
xfs_iomap.h xfs: update i_size after unwritten conversion in dio completion 2017-10-27 10:38:09 +02:00
xfs_iops.c xfs: fix missing ILOCK unlock when xfs_setattr_nonsize fails due to EDQUOT 2019-09-06 10:19:40 +02:00
xfs_iops.h xfs: Propagate dentry down to inode_change_ok() 2016-09-22 10:56:19 +02:00
xfs_itable.c xfs: remove kmem_zalloc_greedy 2017-10-08 10:26:11 +02:00
xfs_itable.h
xfs_linux.h xfs: XFS_IS_REALTIME_INODE() should be false if no rt device present 2017-09-13 14:13:37 -07:00
xfs_log.c xfs: fix mount failure crash on invalid iclog memory access 2020-01-12 11:24:11 +01:00
xfs_log.h xfs: make several functions static 2016-06-01 17:38:15 +10:00
xfs_log_cil.c xfs: allocate log vector buffers outside CIL context lock 2016-07-22 09:52:35 +10:00
xfs_log_priv.h xfs: rework log recovery to submit buffers on LSN boundaries 2016-09-26 08:22:16 +10:00
xfs_log_recover.c xfs: fix log block underflow during recovery cycle verification 2017-12-20 10:07:31 +01:00
xfs_message.c
xfs_message.h
xfs_mount.c xfs: don't leak quotacheck dquots when cow recovery 2017-09-20 08:19:59 +02:00
xfs_mount.h xfs: detect agfl count corruption and reset agfl 2018-06-06 16:44:32 +02:00
xfs_mru_cache.c
xfs_mru_cache.h
xfs_ondisk.h xfs: Don't log uninitialised fields in inode structures 2017-10-27 10:38:09 +02:00
xfs_pnfs.c xfs: update i_size after unwritten conversion in dio completion 2017-10-27 10:38:09 +02:00
xfs_pnfs.h xfs: abstract block export operations from nfsd layouts 2016-07-15 15:31:29 -04:00
xfs_qm.c xfs: quota: check result of register_shrinker() 2018-03-03 10:23:25 +01:00
xfs_qm.h xfs: Split default quota limits by quota type 2016-02-08 11:27:55 +11:00
xfs_qm_bhv.c
xfs_qm_syscalls.c xfs: wait on new inodes during quotaoff dquot release 2017-06-07 12:07:52 +02:00
xfs_quota.h
xfs_quotaops.c xfs: wire up Q_XGETNEXTQUOTA / get_nextdqblk 2016-02-08 11:27:38 +11:00
xfs_refcount_item.c xfs: fix double-cleanup when CUI recovery fails 2017-01-12 11:39:44 +01:00
xfs_refcount_item.h xfs: log refcount intent items 2016-10-03 09:11:21 -07:00
xfs_reflink.c xfs: handle racy AIO in xfs_reflink_end_cow 2017-10-27 10:38:09 +02:00
xfs_reflink.h xfs: only reclaim unwritten COW extents periodically 2017-04-08 09:30:32 +02:00
xfs_rmap_item.c xfs: convert unwritten status of reverse mappings for shared files 2016-10-05 16:26:29 -07:00
xfs_rmap_item.h xfs: convert RUI log formats to use variable length arrays 2016-09-19 10:24:27 +10:00
xfs_rtalloc.c xfs: require both realtime inodes to mount 2019-12-05 15:34:21 +01:00
xfs_rtalloc.h xfs: make several functions static 2016-06-01 17:38:15 +10:00
xfs_stats.c xfs: introduce refcount btree definitions 2016-10-03 09:11:16 -07:00
xfs_stats.h xfs: introduce refcount btree definitions 2016-10-03 09:11:16 -07:00
xfs_super.c xfs: clear sb->s_fs_info on mount failure 2019-10-17 13:42:47 -07:00
xfs_super.h xfs: quiesce the filesystem after recovery on readonly mount 2016-09-26 08:21:44 +10:00
xfs_symlink.c xfs: rename flist/free_list to dfops 2016-08-03 11:19:29 +10:00
xfs_symlink.h
xfs_sysctl.c xfs: garbage collect old cowextsz reservations 2016-10-05 16:26:28 -07:00
xfs_sysctl.h xfs: garbage collect old cowextsz reservations 2016-10-05 16:26:28 -07:00
xfs_sysfs.c xfs: fix max_retries _show and _store functions 2017-01-12 11:39:45 +01:00
xfs_sysfs.h xfs: configurable error behavior via sysfs 2016-05-18 10:58:51 +10:00
xfs_trace.c xfs: rework xfs_bmap_free callers to use xfs_defer_ops 2016-08-03 11:15:38 +10:00
xfs_trace.h xfs: detect agfl count corruption and reset agfl 2018-06-06 16:44:32 +02:00
xfs_trans.c xfs: xfs_trans_alloc_empty 2017-06-07 12:07:52 +02:00
xfs_trans.h xfs: disallow marking previously dirty buffers as ordered 2017-09-20 08:20:02 +02:00
xfs_trans_ail.c xfs: Properly retry failed inode items in case of error during buffer writeback 2017-09-20 08:20:00 +02:00
xfs_trans_bmap.c xfs: try to avoid blowing out the transaction reservation when bunmaping a shared extent 2017-09-20 08:19:57 +02:00
xfs_trans_buf.c xfs: disallow marking previously dirty buffers as ordered 2017-09-20 08:20:02 +02:00
xfs_trans_dquot.c xfs: Split default quota limits by quota type 2016-02-08 11:27:55 +11:00
xfs_trans_extfree.c xfs: set up per-AG free space reservations 2016-09-19 10:30:52 +10:00
xfs_trans_inode.c fs: Replace current_fs_time() with current_time() 2016-09-27 21:06:22 -04:00
xfs_trans_priv.h xfs: Properly retry failed inode items in case of error during buffer writeback 2017-09-20 08:20:00 +02:00
xfs_trans_refcount.c xfs: connect refcount adjust functions to upper layers 2016-10-03 09:11:22 -07:00
xfs_trans_rmap.c xfs: add shared rmap map/unmap/convert log item types 2016-10-05 16:26:29 -07:00
xfs_xattr.c Make __xfs_xattr_put_listen preperly report errors. 2016-09-14 07:40:35 +10:00