Dave Chinner 8eb807bd83 xfs: tail updates only need to occur when LSN changes ... We currently wake anything waiting on the log tail to move whenever the log item at the tail of the log is removed. Historically this was fine behaviour because there were very few items at any given LSN. But with delayed logging, there may be thousands of items at any given LSN, and we can't move the tail until they are all gone. Hence if we are removing them in near tail-first order, we might be waking up processes waiting on the tail LSN to change (e.g. log space waiters) repeatedly without them being able to make progress. This also occurs with the new sync push waiters, and can result in thousands of spurious wakeups every second when under heavy direct reclaim pressure. To fix this, check that the tail LSN has actually changed on the AIL before triggering wakeups. This will reduce the number of spurious wakeups when doing bulk AIL removal and make this code much more efficient. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>		2020-03-27 08:32:55 -07:00
..
9p	9p pull request for inclusion in 5.4	2019-09-27 15:10:34 -07:00
adfs	fs/adfs: bigdir: Fix an error code in adfs_fplus_read()	2020-01-25 11:31:59 -05:00
affs	affs: fix a memory leak in affs_remount	2019-11-18 14:26:43 +01:00
afs	Merge branch 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-02-08 13:26:41 -08:00
autofs	Merge branch 'next.autofs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-12-05 17:11:48 -08:00
befs	fs: Fill in max and min timestamps in superblock	2019-08-30 07:27:17 -07:00
bfs	fs: Fill in max and min timestamps in superblock	2019-08-30 07:27:17 -07:00
btrfs	for-5.6-rc2-tag	2020-02-23 09:43:50 -08:00
cachefiles	cachefiles: drop direct usage of ->bmap method.	2020-02-03 08:05:56 -05:00
ceph	ceph: noacl mount option is effectively ignored	2020-02-11 17:04:40 +01:00
cifs	cifs: make sure we do not overflow the max EA buffer size	2020-02-14 11:10:24 -06:00
coda	y2038: add inode timestamp clamping	2019-09-19 09:42:37 -07:00
configfs	utimes: Clamp the timestamps in notify_change()	2019-12-08 19:10:50 -05:00
cramfs	cramfs: switch to use of errofc() et.al.	2020-02-07 14:48:41 -05:00
crypto	fscrypt: improve format of no-key names	2020-01-22 14:50:03 -08:00
debugfs	Merge branch 'work.recursive_removal' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-02-05 05:09:46 +00:00
devpts	devpts_pty_kill(): don't bother with d_delete()	2019-09-03 09:30:56 -04:00
dlm	dlm: use SO_SNDTIMEO_NEW instead of SO_SNDTIMEO_OLD	2019-12-18 18:07:31 +01:00
ecryptfs	eCryptfs fixes for 5.6-rc3	2020-02-17 21:08:37 -08:00
efivarfs	Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-07-19 10:42:02 -07:00
efs	fs: Fill in max and min timestamps in superblock	2019-08-30 07:27:17 -07:00
erofs	erofs: clean up z_erofs_submit_queue()	2020-01-21 16:46:23 +08:00
exportfs	race in exportfs_decode_fh()	2019-11-11 09:21:59 -05:00
ext2	dax fixes 5.6-rc1	2020-02-11 16:52:08 -08:00
ext4	ext4: potential crash on allocation error in ext4_alloc_flex_bg_array()	2020-02-29 17:48:08 -05:00
f2fs	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-02-08 13:04:49 -08:00
fat	Merge branch 'imm.timestamp' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-02-05 05:02:42 +00:00
freevxfs	fs: Fill in max and min timestamps in superblock	2019-08-30 07:27:17 -07:00
fscache	proc: convert everything to "struct proc_ops"	2020-02-04 03:05:26 +00:00
fuse	Merge branch 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-02-08 13:26:41 -08:00
gfs2	Merge branch 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-02-08 13:26:41 -08:00
hfs	hfs/hfsplus: use 64-bit inode timestamps	2019-12-18 18:07:32 +01:00
hfsplus	hfs/hfsplus: use 64-bit inode timestamps	2019-12-18 18:07:32 +01:00
hostfs	hostfs: pass 64-bit timestamps to/from user space	2019-12-18 18:07:32 +01:00
hpfs	fs: compat_ioctl: move FITRIM emulation into file systems	2019-10-23 17:23:46 +02:00
hugetlbfs	hugetlbfs: switch to use of invalfc()	2020-02-07 14:48:42 -05:00
iomap	fs: Fix page_mkwrite off-by-one errors	2020-01-06 08:58:23 -08:00
isofs	y2038: add inode timestamp clamping	2019-09-19 09:42:37 -07:00
jbd2	jbd2: fix data races at struct journal_head	2020-02-29 13:40:02 -05:00
jffs2	fs_parse: fold fs_parameter_desc/fs_parameter_spec	2020-02-07 14:48:37 -05:00
jfs	Trivial cleanup for jfs	2020-02-05 05:28:20 +00:00
kernfs	Merge branch 'imm.timestamp' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-02-05 05:02:42 +00:00
lockd	proc: convert everything to "struct proc_ops"	2020-02-04 03:05:26 +00:00
minix	fs: Fill in max and min timestamps in superblock	2019-08-30 07:27:17 -07:00
nfs	NFSv4: Ensure the delegation cred is pinned when we call delegreturn	2020-02-13 16:23:02 -05:00
nfs_common
nfsd	Highlights:	2020-02-07 17:50:21 -08:00
nilfs2	fs: compat_ioctl: move FITRIM emulation into file systems	2019-10-23 17:23:46 +02:00
nls
notify	fs: call fsnotify_sb_delete after evict_inodes	2019-12-18 00:03:01 -05:00
ntfs	utimes: Clamp the timestamps in notify_change()	2019-12-08 19:10:50 -05:00
ocfs2	treewide: remove redundant IS_ERR() before error code check	2020-02-04 03:05:27 +00:00
omfs	fs: omfs: Initialize filesystem timestamp ranges	2019-08-30 08:11:25 -07:00
openpromfs	Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-07-19 10:42:02 -07:00
orangefs	help_next should increase position index	2020-02-04 15:22:04 -05:00
overlayfs	ovl: fix lseek overflow on 32bit	2020-02-03 11:41:53 +01:00
proc	Merge branch 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-02-08 13:26:41 -08:00
pstore	pstore/ram: Regularize prz label allocation lifetime	2020-01-08 17:05:45 -08:00
qnx4	fs: Fill in max and min timestamps in superblock	2019-08-30 07:27:17 -07:00
qnx6	fs: Fill in max and min timestamps in superblock	2019-08-30 07:27:17 -07:00
quota	\n	2020-01-30 15:37:41 -08:00
ramfs	fs_parse: fold fs_parameter_desc/fs_parameter_spec	2020-02-07 14:48:37 -05:00
reiserfs	Merge branch 'akpm' (patches from Andrew)	2020-01-31 12:16:36 -08:00
romfs	Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-09-19 10:06:57 -07:00
squashfs	Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-09-19 10:06:57 -07:00
sysfs	treewide: remove redundant IS_ERR() before error code check	2020-02-04 03:05:27 +00:00
sysv	fs: sysv: Initialize filesystem timestamp ranges	2019-08-30 07:27:18 -07:00
tracefs	simple_recursive_removal(): kernel-side rm -rf for ramfs-style filesystems	2019-12-10 22:29:58 -05:00
ubifs	Merge branch 'imm.timestamp' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-02-05 05:02:42 +00:00
udf	udf: Clarify meaning of f_files in udf_statfs	2020-01-20 13:59:41 +01:00
ufs	y2038: add inode timestamp clamping	2019-09-19 09:42:37 -07:00
unicode	kbuild: rename hostprogs-y/always to hostprogs/always-y	2020-02-04 01:53:07 +09:00
vboxsf	fs: Add VirtualBox guest shared folder (vboxsf) support	2020-02-08 17:34:58 -05:00
verity	fs-verity: use u64_to_user_ptr()	2020-01-14 13:28:28 -08:00
xfs	xfs: tail updates only need to occur when LSN changes	2020-03-27 08:32:55 -07:00
zonefs	zonefs: select FS_IOMAP	2020-02-26 16:58:15 +09:00
aio.c	aio: prevent potential eventfd recursion on poll	2020-02-03 17:27:47 -07:00
anon_inodes.c	Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-07-19 10:42:02 -07:00
attr.c	utimes: Clamp the timestamps in notify_change()	2019-12-08 19:10:50 -05:00
bad_inode.c
binfmt_aout.c
binfmt_elf_fdpic.c	y2038: elfcore: Use __kernel_old_timeval for process times	2019-11-15 14:38:29 +01:00
binfmt_elf.c	fs/binfmt_elf.c: coredump: allow process with empty address space to coredump	2020-01-31 10:30:41 -08:00
binfmt_em86.c
binfmt_flat.c	fs/binfmt_flat.c: remove set but not used variable 'inode'	2019-07-16 19:23:22 -07:00
binfmt_misc.c	Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-07-19 10:42:02 -07:00
binfmt_script.c
block_dev.c	block: don't send uevent for empty disk when not invalidating	2019-12-02 18:49:30 -07:00
buffer.c	smp: Remove allocation mask from on_each_cpu_cond.*()	2020-01-24 20:40:09 +01:00
char_dev.c	chardev: Avoid potential use-after-free in 'chrdev_open()'	2020-01-06 20:10:26 +01:00
compat_binfmt_elf.c	y2038: elfcore: Use __kernel_old_timeval for process times	2019-11-15 14:38:29 +01:00
compat.c
coredump.c	pipe: use exclusive waits when reading or writing	2020-02-08 11:39:19 -08:00
d_path.c	[PATCH] fix d_absolute_path() interplay with fsmount()	2019-08-30 19:31:09 -04:00
dax.c	dax: pass NOWAIT flag to iomap_apply	2020-02-05 20:34:32 -08:00
dcache.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-12-08 11:08:28 -08:00
dcookies.c
direct-io.c	fs/direct-io.c: include fs/internal.h for missing prototype	2020-01-04 13:55:09 -08:00
drop_caches.c	fs: avoid softlockups in s_inodes iterators	2019-12-18 00:03:01 -05:00
eventfd.c	eventfd: track eventfd_signal() recursion depth	2020-02-03 17:27:38 -07:00
eventpoll.c	eventpoll: support non-blocking do_epoll_ctl() calls	2020-01-29 15:45:47 -07:00
exec.c	Merge branch 'akpm' (patches from Andrew)	2020-01-31 12:16:36 -08:00
fcntl.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-12-08 11:08:28 -08:00
fhandle.c	fs/handle.c - fix up kerneldoc	2019-08-07 21:51:47 -04:00
file_table.c	vfs: Export flush_delayed_fput for use by knfsd.	2019-08-19 11:00:39 -04:00
file.c	threads-v5.6	2020-01-29 19:38:34 -08:00
filesystems.c	fs_parser: remove fs_parameter_description name field	2020-02-07 14:48:36 -05:00
fs_context.c	add prefix to fs_context->log	2020-02-07 14:48:35 -05:00
fs_parser.c	turn fs_param_is_... into functions	2020-02-07 14:48:38 -05:00
fs_pin.c	switch the remnants of releasing the mountpoint away from fs_pin	2019-07-16 22:52:37 -04:00
fs_struct.c
fs_types.c
fs-writeback.c	memcg: fix a crash in wb_workfn when a device disappears	2020-01-31 10:30:36 -08:00
fsopen.c	add prefix to fs_context->log	2020-02-07 14:48:35 -05:00
inode.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-02-08 13:04:49 -08:00
internal.h	for-5.6/io_uring-vfs-2020-01-29	2020-01-29 18:53:37 -08:00
io_uring.c	io_uring: fix 32-bit compatability with sendmsg/recvmsg	2020-02-27 14:17:49 -07:00
io-wq.c	io-wq: remove spin-for-work optimization	2020-02-25 08:57:37 -07:00
io-wq.h	io-wq: ensure work->task_pid is cleared on init	2020-02-25 13:23:48 -07:00
ioctl.c	compat-ioctl fix for v5.6	2020-02-08 13:44:41 -08:00
Kconfig	fs: New zonefs file system	2020-02-09 15:51:46 -08:00
Kconfig.binfmt
libfs.c	simple_recursive_removal(): kernel-side rm -rf for ramfs-style filesystems	2019-12-10 22:29:58 -05:00
locks.c	locks: print unsigned ino in /proc/locks	2019-12-29 09:00:58 -05:00
Makefile	fs: New zonefs file system	2020-02-09 15:51:46 -08:00
mbcache.c
mount.h	switch the remnants of releasing the mountpoint away from fs_pin	2019-07-16 22:52:37 -04:00
mpage.c	fs: move guard_bio_eod() after bio_set_op_attrs	2020-01-09 08:16:12 -07:00
namei.c	vfs: fix do_last() regression	2020-02-01 10:36:49 -08:00
namespace.c	saner copy_mount_options()	2020-02-03 21:23:33 -05:00
no-block.c
nsfs.c	Merge branch 'work.openat2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-01-29 11:20:24 -08:00
open.c	fs: make build_open_flags() available internally	2020-01-20 17:01:53 -07:00
pipe.c	pipe: make sure to wake up everybody when the last reader/writer closes	2020-02-18 14:34:36 -08:00
pnode.c
pnode.h
posix_acl.c	fs/posix_acl.c: fix kernel-doc warnings	2020-01-04 13:55:09 -08:00
proc_namespace.c	vfs: subtype handling moved to fuse	2019-09-06 21:28:49 +02:00
read_write.c	overlayfs update for 5.6	2020-02-04 11:45:21 +00:00
readdir.c	readdir: make user_access_begin() use the real access range	2020-01-23 10:15:28 -08:00
select.c	y2038: syscalls: change remaining timeval to __kernel_old_timeval	2019-11-15 14:38:29 +01:00
seq_file.c	seq_file: fix problem when seeking mid-record	2019-08-13 16:06:52 -07:00
signalfd.c
splice.c	pipe: use exclusive waits when reading or writing	2020-02-08 11:39:19 -08:00
stack.c	sched/rt, fs: Use CONFIG_PREEMPTION	2019-12-08 14:37:36 +01:00
stat.c	fs: make two stat prep helpers available	2020-01-20 17:03:54 -07:00
statfs.c	vfs: Fix EOVERFLOW testing in put_compat_statfs64	2019-10-03 14:21:35 -07:00
super.c	fs: call fsnotify_sb_delete after evict_inodes	2019-12-18 00:03:01 -05:00
sync.c
timerfd.c	timerfd: Make timerfd_settime() time namespace aware	2020-01-14 12:20:53 +01:00
userfaultfd.c	Merge branch 'akpm' (patches from Andrew)	2019-12-01 20:36:41 -08:00
utimes.c	utimes: Clamp the timestamps in notify_change()	2019-12-08 19:10:50 -05:00
xattr.c