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
kmem.c
kmem.h
Makefile
mrlock.h
uuid.c
uuid.h
xfs_acl.c
xfs_acl.h
xfs_aops.c	xfs: Timely free truncated dirty pages	2017-01-11 10:20:04 -08:00
xfs_aops.h
xfs_attr_inactive.c
xfs_attr_list.c
xfs_attr.h
xfs_bmap_item.c
xfs_bmap_item.h
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_buf_item.c
xfs_buf_item.h
xfs_buf.c	xfs: clear _XBF_PAGES from buffers when readahead page	2017-01-25 20:24:57 -08:00
xfs_buf.h
xfs_dir2_readdir.c
xfs_discard.c
xfs_discard.h
xfs_dquot_item.c
xfs_dquot_item.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_error.c
xfs_error.h
xfs_export.c
xfs_export.h
xfs_extent_busy.c
xfs_extent_busy.h
xfs_extfree_item.c
xfs_extfree_item.h
xfs_file.c
xfs_filestream.c
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_globals.c
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_icreate_item.c
xfs_icreate_item.h
xfs_inode_item.c
xfs_inode_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_ioctl32.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
xfs_ioctl32.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_iomap.c	xfs: fix COW writeback race	2017-01-23 10:55:07 -08:00
xfs_iomap.h
xfs_iops.c	xfs: sanity check inode mode when creating new dentry	2017-01-17 11:42:22 -08:00
xfs_iops.h
xfs_itable.c
xfs_itable.h
xfs_linux.h	xfs: make the ASSERT() condition likely	2017-01-17 11:41:41 -08:00
xfs_log_cil.c
xfs_log_priv.h
xfs_log_recover.c
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_message.c
xfs_message.h
xfs_mount.c
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_pnfs.c
xfs_pnfs.h
xfs_qm_bhv.c
xfs_qm_syscalls.c
xfs_qm.c	xfs: prevent quotacheck from overloading inode lru	2017-01-27 09:32:30 -08:00
xfs_qm.h
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_reflink.c	vfs: fix isize/pos/len checks for reflink & dedupe	2016-12-22 23:00:23 -05:00
xfs_reflink.h
xfs_rmap_item.c
xfs_rmap_item.h
xfs_rtalloc.c
xfs_rtalloc.h
xfs_stats.c
xfs_stats.h
xfs_super.c
xfs_super.h
xfs_symlink.c
xfs_symlink.h
xfs_sysctl.c
xfs_sysctl.h
xfs_sysfs.c	xfs: fix max_retries _show and _store functions	2017-01-03 20:34:17 -08:00
xfs_sysfs.h
xfs_trace.c
xfs_trace.h
xfs_trans_ail.c
xfs_trans_bmap.c
xfs_trans_buf.c
xfs_trans_dquot.c
xfs_trans_extfree.c
xfs_trans_inode.c
xfs_trans_priv.h
xfs_trans_refcount.c
xfs_trans_rmap.c
xfs_trans.c
xfs_trans.h
xfs_xattr.c
xfs.h