Josef Bacik 957780eb27 Btrfs: introduce ticketed enospc infrastructure ... Our enospc flushing sucks. It is born from a time where we were early enospc'ing constantly because multiple threads would race in for the same reservation and randomly starve other ones out. So I came up with this solution to block any other reservations from happening while one guy tried to flush stuff to satisfy his reservation. This gives us pretty good correctness, but completely crap latency. The solution I've come up with is ticketed reservations. Basically we try to make our reservation, and if we can't we put a ticket on a list in order and kick off an async flusher thread. This async flusher thread does the same old flushing we always did, just asynchronously. As space is freed and added back to the space_info it checks and sees if we have any tickets that need satisfying, and adds space to the tickets and wakes up anything we've satisfied. Once the flusher thread stops making progress it wakes up all the current tickets and tells them to take a hike. There is a priority list for things that can't flush, since the async flusher could do anything we need to avoid deadlocks. These guys get priority for having their reservation made, and will still do manual flushing themselves in case the async flusher isn't running. This patch gives us significantly better latencies. Thanks, Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: David Sterba <dsterba@suse.com>		2016-07-07 18:45:53 +02:00
..
9p	9p: use file_dentry()	2016-06-30 23:28:09 -04:00
adfs
affs	affs: fix remount failure when there are no options changed	2016-05-28 16:50:24 -07:00
afs	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00
autofs4	autofs: don't get stuck in a loop if vfs_write() returns an error	2016-06-24 17:23:52 -07:00
befs	fs/befs/io.c:befs_bread(): remove unneeded initialization to NULL	2016-05-23 17:04:14 -07:00
bfs	more trivial ->iterate_shared conversions	2016-05-09 11:41:14 -04:00
btrfs	Btrfs: introduce ticketed enospc infrastructure	2016-07-07 18:45:53 +02:00
cachefiles	FS-Cache: make check_consistency callback return int	2016-06-01 10:29:39 +02:00
ceph	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-07-01 15:20:11 -07:00
cifs	File names with trailing period or space need special case conversion	2016-06-24 12:05:52 -05:00
coda	introduce a parallel variant of ->iterate()	2016-05-02 19:49:29 -04:00
configfs	configfs_readdir(): make safe under shared lock	2016-05-09 11:41:13 -04:00
cramfs	more trivial ->iterate_shared conversions	2016-05-09 11:41:14 -04:00
crypto	fscrypto/f2fs: allow fs-specific key prefix for fs encryption	2016-05-07 10:32:33 -07:00
debugfs	debugfs: open_proxy_open(): avoid double fops release	2016-06-15 04:56:35 -07:00
devpts	devpts: Make each mount of devpts an independent filesystem.	2016-06-05 10:36:01 -07:00
dlm	mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros	2016-04-04 10:41:08 -07:00
ecryptfs	Merge branch 'stacking-fixes' (vfs stacking fixes from Jann)	2016-06-10 12:10:02 -07:00
efivarfs	fs/efivarfs/inode.c: use generic UUID library	2016-05-20 17:58:30 -07:00
efs	fs/efs/super.c: fix return value	2016-05-20 17:58:30 -07:00
exofs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2016-05-17 17:05:30 -07:00
exportfs	introduce a parallel variant of ->iterate()	2016-05-02 19:49:29 -04:00
ext2	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-05-27 17:14:05 -07:00
ext4	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-05-27 17:14:05 -07:00
f2fs	switch xattr_handler->set() to passing dentry and inode separately	2016-05-27 15:39:43 -04:00
fat	Merge branch 'work.preadv2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-05-17 15:05:23 -07:00
freevxfs	more trivial ->iterate_shared conversions	2016-05-09 11:41:14 -04:00
fscache	FS-Cache: wake write waiter after invalidating writes	2016-06-01 10:29:09 +02:00
fuse	fuse: serialize dirops by default	2016-06-30 13:10:49 +02:00
gfs2	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-05-27 17:14:05 -07:00
hfs	switch ->setxattr() to passing dentry and inode separately	2016-05-27 20:09:16 -04:00
hfsplus	switch xattr_handler->set() to passing dentry and inode separately	2016-05-27 15:39:43 -04:00
hostfs	hostfs: switch to ->iterate_shared()	2016-05-12 19:49:30 -04:00
hpfs	hpfs: implement the show_options method	2016-05-28 16:50:24 -07:00
hugetlbfs	mm, fs: remove remaining PAGE_CACHE_* and page_cache_{get,release} usage	2016-04-04 10:41:08 -07:00
isofs	Merge branch 'ovl-fixes' into for-linus	2016-05-11 00:00:29 -04:00
jbd2	jbd2: get rid of superfluous __GFP_REPEAT	2016-06-24 17:23:52 -07:00
jffs2	switch xattr_handler->set() to passing dentry and inode separately	2016-05-27 15:39:43 -04:00
jfs	switch xattr_handler->set() to passing dentry and inode separately	2016-05-27 15:39:43 -04:00
kernfs	switch ->setxattr() to passing dentry and inode separately	2016-05-27 20:09:16 -04:00
lockd	lockd: unregister notifier blocks if the service fails to come up completely	2016-06-30 16:35:07 -04:00
logfs	logfs: no need to lock directory in lseek	2016-05-09 11:42:19 -04:00
minix	simple local filesystems: switch to ->iterate_shared()	2016-05-02 19:49:32 -04:00
ncpfs	mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros	2016-04-04 10:41:08 -07:00
nfs	NFS: Fix another OPEN_DOWNGRADE bug	2016-06-28 16:55:34 -04:00
nfs_common
nfsd	nfsd: check permissions when setting ACLs	2016-06-24 12:11:52 -04:00
nilfs2	fs/nilfs2: fix potential underflow in call to crc32_le	2016-06-24 17:23:52 -07:00
nls
notify	fsnotify: avoid spurious EMFILE errors from inotify_init()	2016-05-19 19:12:14 -07:00
ntfs	fs: simplify the generic_write_sync prototype	2016-05-01 19:58:39 -04:00
ocfs2	ocfs2: disable BUG assertions in reading blocks	2016-06-24 17:23:52 -07:00
omfs	more trivial ->iterate_shared conversions	2016-05-09 11:41:14 -04:00
openpromfs	more trivial ->iterate_shared conversions	2016-05-09 11:41:14 -04:00
orangefs	switch xattr_handler->set() to passing dentry and inode separately	2016-05-27 15:39:43 -04:00
overlayfs	ovl: warn instead of error if d_type is not supported	2016-07-03 09:39:31 +02:00
proc	Merge branch 'stacking-fixes' (vfs stacking fixes from Jann)	2016-06-10 12:10:02 -07:00
pstore	mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros	2016-04-04 10:41:08 -07:00
qnx4	more trivial ->iterate_shared conversions	2016-05-09 11:41:14 -04:00
qnx6	more trivial ->iterate_shared conversions	2016-05-09 11:41:14 -04:00
quota	fs/quota: use nla_put_u64_64bit()	2016-04-26 12:00:48 -04:00
ramfs	tmpfs/ramfs: fix VM_MAYSHARE mappings for NOMMU	2016-05-20 17:58:30 -07:00
reiserfs	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2016-06-19 07:05:14 -10:00
romfs	romfs, squashfs: switch to ->iterate_shared()	2016-05-09 11:41:15 -04:00
squashfs	romfs, squashfs: switch to ->iterate_shared()	2016-05-09 11:41:15 -04:00
sysfs
sysv	simple local filesystems: switch to ->iterate_shared()	2016-05-02 19:49:32 -04:00
tracefs
ubifs	UBIFS: Implement ->migratepage()	2016-06-23 00:29:53 +02:00
udf	udf: Use correct partition reference number for metadata	2016-05-19 13:00:35 +02:00
ufs	simple local filesystems: switch to ->iterate_shared()	2016-05-02 19:49:32 -04:00
xfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-05-27 17:14:05 -07:00
aio.c	aio: make aio_setup_ring killable	2016-05-23 17:04:14 -07:00
anon_inodes.c
attr.c
bad_inode.c	switch ->setxattr() to passing dentry and inode separately	2016-05-27 20:09:16 -04:00
binfmt_aout.c	fs: fix binfmt_aout.c build error	2016-05-28 16:34:59 -07:00
binfmt_elf_fdpic.c	coredump: fix dumping through pipes	2016-06-07 22:07:09 -04:00
binfmt_elf.c	coredump: fix dumping through pipes	2016-06-07 22:07:09 -04:00
binfmt_em86.c
binfmt_flat.c	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00
binfmt_misc.c
binfmt_script.c
block_dev.c	DAX error handling for 4.7	2016-05-26 19:34:26 -07:00
buffer.c	mm, page_alloc: avoid looking up the first zone in a zonelist twice	2016-05-19 19:12:14 -07:00
char_dev.c	chrdev: emit a warning when we go below dynamic major range	2016-03-29 10:11:44 -07:00
compat_binfmt_elf.c
compat_ioctl.c
compat.c	Fix a number of bugs, most notably a potential stale data exposure	2016-05-24 12:55:26 -07:00
coredump.c	coredump: fix dumping through pipes	2016-06-07 22:07:09 -04:00
dax.c	dax: fix offset overflow in dax_io	2016-06-27 12:18:44 -07:00
dcache.c	fix idiotic braino in d_alloc_parallel()	2016-06-20 10:07:42 -04:00
dcookies.c
direct-io.c	direct-io: fix direct write stale data exposure from concurrent buffered read	2016-05-27 14:49:37 -07:00
drop_caches.c
eventfd.c	eventfd: document lockless access in eventfd_poll	2016-03-22 15:36:02 -07:00
eventpoll.c	fs: poll/select/recvmmsg: use timespec64 for timeout events	2016-05-19 19:12:14 -07:00
exec.c	exec: make exec path waiting for mmap_sem killable	2016-05-23 17:04:14 -07:00
fcntl.c
fhandle.c	fs/coredump: prevent fsuid=0 dumps into user-controlled directories	2016-03-22 15:36:02 -07:00
file_table.c
file.c	give readdir(2)/getdents(2)/etc. uniform exclusion with lseek()	2016-05-02 19:49:28 -04:00
filesystems.c
fs_pin.c
fs_struct.c
fs-writeback.c	mm,writeback: don't use memory reserves for wb_start_writeback	2016-05-20 17:58:30 -07:00
inode.c	parallel lookups: actual switch to rwsem	2016-05-02 19:49:28 -04:00
internal.h	much milder d_walk() race	2016-06-10 11:32:47 -04:00
ioctl.c
Kconfig	dax: Make huge page handling depend of CONFIG_BROKEN	2016-05-19 15:13:17 -06:00
Kconfig.binfmt	ELF/MIPS build fix	2016-05-23 17:04:14 -07:00
libfs.c	lockless next_positive()	2016-06-20 17:11:29 -04:00
locks.c	locks: use file_inode()	2016-07-01 10:24:18 -04:00
Makefile	Merge tag 'ofs-pull-tag-1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux	2016-03-26 12:59:04 -07:00
mbcache.c	mbcache: add reusable flag to cache entries	2016-02-22 22:44:04 -05:00
mount.h
mpage.c	mm, fs: remove remaining PAGE_CACHE_* and page_cache_{get,release} usage	2016-04-04 10:41:08 -07:00
namei.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-06-07 20:41:36 -07:00
namespace.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-07-01 15:20:11 -07:00
no-block.c
nsfs.c
open.c	Merge branch 'work.const-path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-05-17 14:41:03 -07:00
pipe.c	mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros	2016-04-04 10:41:08 -07:00
pnode.c	propogate_mnt: Handle the first propogated copy being a slave	2016-05-05 09:54:45 -05:00
pnode.h
posix_acl.c	posix_acl: Add set_posix_acl	2016-06-24 12:11:34 -04:00
proc_namespace.c	vfs: show_vfsstat: do not ignore errors from show_devname method	2016-03-16 13:09:08 -04:00
read_write.c	Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-05-18 11:46:23 -07:00
readdir.c	restore killability of old mutex_lock_killable(&inode->i_mutex) users	2016-05-26 00:13:25 -04:00
select.c	fs: poll/select/recvmmsg: use timespec64 for timeout events	2016-05-19 19:12:14 -07:00
seq_file.c	Make file credentials available to the seqfile interfaces	2016-04-14 12:56:09 -07:00
signalfd.c
splice.c	Merge branch 'ovl-fixes' into for-linus	2016-05-11 00:00:29 -04:00
stack.c
stat.c
statfs.c
super.c	Merge branch 'master' into for-next	2016-04-18 11:18:55 +02:00
sync.c	mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros	2016-04-04 10:41:08 -07:00
timerfd.c
userfaultfd.c	userfaultfd: don't pin the user memory in userfaultfd_file_create()	2016-05-20 17:58:30 -07:00
utimes.c
xattr.c	switch ->setxattr() to passing dentry and inode separately	2016-05-27 20:09:16 -04:00