Brian Foster 84ca484ecf xfs: don't discard on free of unwritten extents ... Unwritten extents by definition have not been written to until they are converted to normal written extents. If unwritten extents are freed from a file, it is therefore guaranteed that the blocks have not been written to since allocation (note that zero range punches and reallocates blocks). To cut down on online discards generated from workloads that make use of preallocation, skip discards of extents if they are in the unwritten state when the extent is freed. Note that this optimization does not apply to log recovery, during which all freed extents are discarded if online discard is enabled. Also note that it may be possible for a filesystem crash to occur after write completion of an unwritten extent but before unwritten conversion such that the extent remains unwritten after log recovery. Since this pseudo-inconsistency may already be possible after a crash (consider writing to recently allocated blocks where the allocation transaction is lost after a crash), this change shouldn't introduce any fundamental limitations that don't already exist. In short, on storage stacks where discards are important, it's good practice to run an occasional fstrim even with online discard enabled in the filesystem, particularly after a crash. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>		2018-05-10 08:56:47 -07:00
..
libxfs	xfs: don't discard on free of unwritten extents	2018-05-10 08:56:47 -07:00
scrub	xfs: xfs_scrub_iallocbt_xref_rmap_inodes should use xref_set_corrupt	2018-03-23 18:05:09 -07:00
Kconfig	fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at	2018-01-01 12:45:37 -07:00
kmem.c	xfs: fall back to vmalloc when allocation log vector buffers	2018-03-11 20:27:55 -07:00
kmem.h	xfs: fall back to vmalloc when allocation log vector buffers	2018-03-11 20:27:55 -07:00
Makefile
mrlock.h
xfs.h
xfs_acl.c
xfs_acl.h
xfs_aops.c	export __set_page_dirty	2018-04-11 10:28:39 -07:00
xfs_aops.h	xfs, dax: introduce xfs_dax_aops	2018-03-30 11:34:55 -07:00
xfs_attr.h
xfs_attr_inactive.c
xfs_attr_list.c
xfs_bmap_item.c	xfs: log item flags are racy	2018-05-10 08:56:41 -07:00
xfs_bmap_item.h	xfs: log recovery should replay deferred ops in order	2017-11-27 09:34:08 -08:00
xfs_bmap_util.c	xfs: skip online discard during eofblocks trims	2018-05-10 08:56:47 -07:00
xfs_bmap_util.h
xfs_buf.c	xfs: don't retry xfs_buf_find on XBF_TRYLOCK failure	2018-05-09 10:04:00 -07:00
xfs_buf.h	xfs: make xfs_buf_incore out of line	2018-05-09 10:04:00 -07:00
xfs_buf_item.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_buf_item.h	Use list_head infra-structure for buffer's log items list	2018-01-29 07:27:22 -08:00
xfs_dir2_readdir.c	xfs: directory scrubber must walk through data block to offset	2018-01-17 21:00:46 -08:00
xfs_discard.c	Force log to disk before reading the AGF during a fstrim	2018-04-10 22:39:04 -07:00
xfs_discard.h
xfs_dquot.c	xfs: log item flags are racy	2018-05-10 08:56:41 -07:00
xfs_dquot.h
xfs_dquot_item.c	xfs: log item flags are racy	2018-05-10 08:56:41 -07:00
xfs_dquot_item.h
xfs_error.c	xfs: refactor inode buffer verifier error logging	2018-03-23 18:05:07 -07:00
xfs_error.h	xfs: refactor inode buffer verifier error logging	2018-03-23 18:05:07 -07:00
xfs_export.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2018-04-05 11:56:35 -07:00
xfs_export.h
xfs_extent_busy.c	xfs: merge _xfs_log_force and xfs_log_force	2018-03-14 11:12:52 -07:00
xfs_extent_busy.h
xfs_extfree_item.c	xfs: add bmapi nodiscard flag	2018-05-10 08:56:46 -07:00
xfs_extfree_item.h
xfs_file.c	iomap: iomap_dio_rw() handles all sync writes	2018-05-09 10:04:01 -07:00
xfs_filestream.c	xfs: non-scrub - remove unused function parameters	2018-04-09 10:23:42 -07:00
xfs_filestream.h
xfs_fsmap.c
xfs_fsmap.h
xfs_fsops.c	xfs: convert XFS_AGFL_SIZE to a helper function	2018-03-11 20:27:56 -07:00
xfs_fsops.h	xfs: hoist xfs_fs_geometry to libxfs	2018-01-08 10:54:48 -08:00
xfs_globals.c
xfs_icache.c	xfs: log item flags are racy	2018-05-10 08:56:41 -07:00
xfs_icache.h	xfs: remove leftover CoW reservations when remounting ro	2017-12-21 08:47:32 -08:00
xfs_icreate_item.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_icreate_item.h
xfs_inode.c	xfs: skip online discard during eofblocks trims	2018-05-10 08:56:47 -07:00
xfs_inode.h	xfs: skip online discard during eofblocks trims	2018-05-10 08:56:47 -07:00
xfs_inode_item.c	xfs: log item flags are racy	2018-05-10 08:56:41 -07:00
xfs_inode_item.h
xfs_ioctl.c	xfs: refactor the geometry structure filling function	2018-01-08 10:54:48 -08:00
xfs_ioctl.h
xfs_ioctl32.c	xfs: refactor the geometry structure filling function	2018-01-08 10:54:48 -08:00
xfs_ioctl32.h
xfs_iomap.c	xfs: clean up locking in xfs_file_iomap_begin	2018-05-09 10:04:01 -07:00
xfs_iomap.h
xfs_iops.c	Changes since last update:	2018-04-12 13:28:22 -07:00
xfs_iops.h
xfs_itable.c
xfs_itable.h
xfs_linux.h	xfs: use %px for data pointers when debugging	2018-01-12 14:09:08 -08:00
xfs_log.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_log.h	xfs: non-scrub - remove unused function parameters	2018-04-09 10:23:42 -07:00
xfs_log_cil.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_log_priv.h
xfs_log_recover.c	xfs: remove unused flags arg from xfs_dquot_verify	2018-05-09 10:04:01 -07:00
xfs_message.c
xfs_message.h
xfs_mount.c	xfs: clean up xfs_mount allocation and dynamic initializers	2018-03-26 08:54:15 -07:00
xfs_mount.h	xfs: detect agfl count corruption and reset agfl	2018-03-23 18:05:06 -07:00
xfs_mru_cache.c	xfs: remove filestream item xfs_inode reference	2018-04-09 10:23:39 -07:00
xfs_mru_cache.h	xfs: remove filestream item xfs_inode reference	2018-04-09 10:23:39 -07:00
xfs_ondisk.h
xfs_pnfs.c
xfs_pnfs.h
xfs_qm.c	xfs: log item flags are racy	2018-05-10 08:56:41 -07:00
xfs_qm.h
xfs_qm_bhv.c
xfs_qm_syscalls.c
xfs_quota.h
xfs_quotaops.c
xfs_refcount_item.c	xfs: log item flags are racy	2018-05-10 08:56:41 -07:00
xfs_refcount_item.h	xfs: log recovery should replay deferred ops in order	2017-11-27 09:34:08 -08:00
xfs_reflink.c	xfs: fix double ijoin in xfs_reflink_clear_inode_flag()	2018-05-10 08:56:46 -07:00
xfs_reflink.h
xfs_rmap_item.c	xfs: log item flags are racy	2018-05-10 08:56:41 -07:00
xfs_rmap_item.h
xfs_rtalloc.c
xfs_rtalloc.h	xfs: cross-reference the realtime bitmap	2018-01-17 21:00:46 -08:00
xfs_stats.c
xfs_stats.h
xfs_super.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_super.h	xfs: add scrub to XFS_BUILD_OPTIONS	2018-02-01 21:06:15 -08:00
xfs_symlink.c	xfs: fix double ijoin in xfs_inactive_symlink_rmt()	2018-05-10 08:56:46 -07:00
xfs_symlink.h
xfs_sysctl.c
xfs_sysctl.h
xfs_sysfs.c
xfs_sysfs.h
xfs_trace.c	fs: xfs: remove duplicate includes	2017-12-08 17:51:05 -08:00
xfs_trace.h	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans.h	xfs: add bmapi nodiscard flag	2018-05-10 08:56:46 -07:00
xfs_trans_ail.c	xfs: don't assert fail with AIL lock held	2018-05-10 08:56:46 -07:00
xfs_trans_bmap.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans_buf.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans_dquot.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans_extfree.c	xfs: add bmapi nodiscard flag	2018-05-10 08:56:46 -07:00
xfs_trans_inode.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans_priv.h	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans_refcount.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans_rmap.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_xattr.c