Brian Foster e0d76fa447 xfs: prevent quotacheck from overloading inode lru ... Quotacheck runs at mount time in situations where quota accounting must be recalculated. In doing so, it uses bulkstat to visit every inode in the filesystem. Historically, every inode processed during quotacheck was released and immediately tagged for reclaim because quotacheck runs before the superblock is marked active by the VFS. In other words, the final iput() lead to an immediate ->destroy_inode() call, which allowed the XFS background reclaim worker to start reclaiming inodes. Commit 17c12bcd3 ("xfs: when replaying bmap operations, don't let unlinked inodes get reaped") marks the XFS superblock active sooner as part of the mount process to support caching inodes processed during log recovery. This occurs before quotacheck and thus means all inodes processed by quotacheck are inserted to the LRU on release. The s_umount lock is held until the mount has completed and thus prevents the shrinkers from operating on the sb. This means that quotacheck can excessively populate the inode LRU and lead to OOM conditions on systems without sufficient RAM. Update the quotacheck bulkstat handler to set XFS_IGET_DONTCACHE on inodes processed by quotacheck. This causes ->drop_inode() to return 1 and in turn causes iput_final() to evict the inode. This preserves the original quotacheck behavior and prevents it from overloading the LRU and running out of memory. CC: stable@vger.kernel.org # v4.9 Reported-by: Martin Svec <martin.svec@zoner.cz> Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>		2017-01-27 09:32:30 -08:00
..
libxfs	xfs: extsize hints are not unlikely in xfs_bmap_btalloc	2017-01-25 08:59:43 -08:00
Kconfig	xfs: implement iomap based buffered write path	2016-06-21 09:53:44 +10:00
Makefile	xfs: introduce the CoW fork	2016-10-04 18:06:40 -07:00
kmem.c	…
kmem.h	…
mrlock.h	…
uuid.c	…
uuid.h	…
xfs.h	…
xfs_acl.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-10-10 20:16:43 -07:00
xfs_acl.h	…
xfs_aops.c	xfs: Timely free truncated dirty pages	2017-01-11 10:20:04 -08:00
xfs_aops.h	xfs: use iomap_dio_rw	2016-11-30 14:37:15 +11:00
xfs_attr.h	xfs: several xattr functions can be void	2016-12-05 12:32:14 +11:00
xfs_attr_inactive.c	xfs: make several functions static	2016-06-01 17:38:15 +10:00
xfs_attr_list.c	xfs: several xattr functions can be void	2016-12-05 12:32:14 +11:00
xfs_bmap_item.c	xfs: when replaying bmap operations, don't let unlinked inodes get reaped	2016-10-04 11:05:44 -07:00
xfs_bmap_item.h	xfs: log bmap intent items	2016-10-04 11:05:44 -07:00
xfs_bmap_util.c	xfs: fix bmv_count confusion w/ shared extents	2017-01-26 09:50:30 -08:00
xfs_bmap_util.h	xfs: change xfs_bmap_{finish,cancel,init,free} -> xfs_defer_*	2016-08-03 11:18:10 +10:00
xfs_buf.c	xfs: clear _XBF_PAGES from buffers when readahead page	2017-01-25 20:24:57 -08:00
xfs_buf.h	xfs: use rhashtable to track buffer cache	2016-12-07 17:36:36 +11:00
xfs_buf_item.c	xfs: normalize "infinite" retries in error configs	2016-09-14 07:51:30 +10:00
xfs_buf_item.h	…
xfs_dir2_readdir.c	xfs: remove i_iolock and use i_rwsem in the VFS inode instead	2016-11-30 14:33:25 +11:00
xfs_discard.c	xfs: rmap btree requires more reserved free space	2016-08-03 11:38:24 +10:00
xfs_discard.h	…
xfs_dquot.c	xfs: don't wrap ID in xfs_dq_get_next_id	2017-01-17 11:43:38 -08:00
xfs_dquot.h	…
xfs_dquot_item.c	xfs: allocate log vector buffers outside CIL context lock	2016-07-22 09:52:35 +10:00
xfs_dquot_item.h	…
xfs_error.c	Merge branch 'xfs-4.8-misc-fixes-3' into for-next	2016-07-20 11:51:08 +10:00
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: remote attribute blocks aren't really userdata	2016-09-26 08:21:28 +10:00
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	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-12-17 18:44:00 -08:00
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	2017-01-03 18:39:33 -08:00
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: fix crash and data corruption due to removal of busy COW extents	2017-01-03 18:39:33 -08:00
xfs_icache.h	xfs: garbage collect old cowextsz reservations	2016-10-05 16:26:28 -07:00
xfs_icreate_item.c	fs: xfs: xfs_icreate_item: constify xfs_item_ops structure	2016-11-28 14:57:42 +11:00
xfs_icreate_item.h	…
xfs_inode.c	xfs: use per-AG reservations for the finobt	2017-01-25 07:49:35 -08:00
xfs_inode.h	xfs: remove i_iolock and use i_rwsem in the VFS inode instead	2016-11-30 14:33:25 +11:00
xfs_inode_item.c	xfs: provide helper for counting extents from if_bytes	2016-11-08 12:59:42 +11:00
xfs_inode_item.h	…
xfs_ioctl.c	Merge uncontroversial parts of branch 'readlink' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs	2016-12-17 19:16:12 -08:00
xfs_ioctl.h	xfs: don't pass ioflags around in the ioctl path	2016-07-20 11:29:35 +10:00
xfs_ioctl32.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
xfs_ioctl32.h	…
xfs_iomap.c	xfs: fix COW writeback race	2017-01-23 10:55:07 -08:00
xfs_iomap.h	xfs: create a separate cow extent size hint for the allocator	2016-10-05 16:26:26 -07:00
xfs_iops.c	xfs: sanity check inode mode when creating new dentry	2017-01-17 11:42:22 -08:00
xfs_iops.h	xfs: Propagate dentry down to inode_change_ok()	2016-09-22 10:56:19 +02:00
xfs_itable.c	xfs: create a separate cow extent size hint for the allocator	2016-10-05 16:26:26 -07:00
xfs_itable.h	…
xfs_linux.h	xfs: make the ASSERT() condition likely	2017-01-17 11:41:41 -08:00
xfs_log.c	xfs: don't print warnings when xfs_log_force fails	2017-01-09 13:45:01 -08:00
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	Merge branch 'xfs-4.10-misc-fixes-3' into for-next	2016-12-07 17:42:30 +11:00
xfs_message.c	…
xfs_message.h	…
xfs_mount.c	xfs: use rhashtable to track buffer cache	2016-12-07 17:36:36 +11:00
xfs_mount.h	xfs: use per-AG reservations for the finobt	2017-01-25 07:49:35 -08:00
xfs_mru_cache.c	…
xfs_mru_cache.h	…
xfs_ondisk.h	xfs: define the on-disk refcount btree format	2016-10-03 09:11:18 -07:00
xfs_pnfs.c	xfs: remove i_iolock and use i_rwsem in the VFS inode instead	2016-11-30 14:33:25 +11:00
xfs_pnfs.h	xfs: remove i_iolock and use i_rwsem in the VFS inode instead	2016-11-30 14:33:25 +11:00
xfs_qm.c	xfs: prevent quotacheck from overloading inode lru	2017-01-27 09:32:30 -08:00
xfs_qm.h	…
xfs_qm_bhv.c	…
xfs_qm_syscalls.c	…
xfs_quota.h	…
xfs_quotaops.c	…
xfs_refcount_item.c	xfs: fix double-cleanup when CUI recovery fails	2017-01-03 18:39:32 -08:00
xfs_refcount_item.h	xfs: log refcount intent items	2016-10-03 09:11:21 -07:00
xfs_reflink.c	vfs: fix isize/pos/len checks for reflink & dedupe	2016-12-22 23:00:23 -05:00
xfs_reflink.h	xfs: use new extent lookup helpers in xfs_reflink_trim_irec_to_next_cow	2016-11-24 11:39:50 +11:00
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: rename flist/free_list to dfops	2016-08-03 11:19:29 +10:00
xfs_rtalloc.h	xfs: make several functions static	2016-06-01 17:38:15 +10:00
xfs_stats.c	xfs: make xfs btree stats less huge	2016-12-05 14:38:58 +11:00
xfs_stats.h	xfs: make xfs btree stats less huge	2016-12-05 14:38:58 +11:00
xfs_super.c	xfs: deprecate barrier/nobarrier mount option	2016-12-09 16:49:54 +11:00
xfs_super.h	xfs: quiesce the filesystem after recovery on readonly mount	2016-09-26 08:21:44 +10:00
xfs_symlink.c	xfs: remove i_iolock and use i_rwsem in the VFS inode instead	2016-11-30 14:33:25 +11:00
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	2017-01-03 20:34:17 -08:00
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: nuke unused tracepoint definitions	2016-12-09 16:49:54 +11:00
xfs_trans.c	Merge branch 'xfs-4.9-reflink-prep' into for-next	2016-10-03 09:52:31 +11:00
xfs_trans.h	xfs: implement deferred bmbt map/unmap operations	2016-10-04 11:05:44 -07:00
xfs_trans_ail.c	…
xfs_trans_bmap.c	xfs: implement deferred bmbt map/unmap operations	2016-10-04 11:05:44 -07:00
xfs_trans_buf.c	…
xfs_trans_dquot.c	…
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_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	xfs: several xattr functions can be void	2016-12-05 12:32:14 +11:00