Josef Bacik fcebe4562d Btrfs: rework qgroup accounting ... Currently qgroups account for space by intercepting delayed ref updates to fs trees. It does this by adding sequence numbers to delayed ref updates so that it can figure out how the tree looked before the update so we can adjust the counters properly. The problem with this is that it does not allow delayed refs to be merged, so if you say are defragging an extent with 5k snapshots pointing to it we will thrash the delayed ref lock because we need to go back and manually merge these things together. Instead we want to process quota changes when we know they are going to happen, like when we first allocate an extent, we free a reference for an extent, we add new references etc. This patch accomplishes this by only adding qgroup operations for real ref changes. We only modify the sequence number when we need to lookup roots for bytenrs, this reduces the amount of churn on the sequence number and allows us to merge delayed refs as we add them most of the time. This patch encompasses a bunch of architectural changes 1) qgroup ref operations: instead of tracking qgroup operations through the delayed refs we simply add new ref operations whenever we notice that we need to when we've modified the refs themselves. 2) tree mod seq: we no longer have this separation of major/minor counters. this makes the sequence number stuff much more sane and we can remove some locking that was needed to protect the counter. 3) delayed ref seq: we now read the tree mod seq number and use that as our sequence. This means each new delayed ref doesn't have it's own unique sequence number, rather whenever we go to lookup backrefs we inc the sequence number so we can make sure to keep any new operations from screwing up our world view at that given point. This allows us to merge delayed refs during runtime. With all of these changes the delayed ref stuff is a little saner and the qgroup accounting stuff no longer goes negative in some cases like it was before. Thanks, Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Chris Mason <clm@fb.com>		2014-06-09 17:20:48 -07:00
..
9p	mm: implement ->map_pages for page cache	2014-04-07 16:35:53 -07:00
adfs	fs/adfs/super.c: add __init to init_inodecache()	2014-04-07 16:36:08 -07:00
affs	fs/affs/super.c: bugfix / double free	2014-05-06 13:05:00 -07:00
afs	AFS: Pass an afs_call* to call->async_workfn() instead of a work_struct*	2014-05-23 13:05:22 +01:00
autofs4	autofs: fix lockref lookup	2014-05-06 13:04:59 -07:00
befs	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
bfs	fs/bfs/inode.c: add __init to init_inodecache()	2014-04-07 16:36:08 -07:00
btrfs	Btrfs: rework qgroup accounting	2014-06-09 17:20:48 -07:00
cachefiles	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-04-12 14:49:50 -07:00
ceph	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2014-05-05 15:17:02 -07:00
cifs	cifs: fix actimeo=0 corner case when cifs_i->time == jiffies	2014-04-24 22:37:03 -05:00
coda	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
configfs	…
cramfs	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
debugfs	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
devpts	fs: push sync_filesystem() down to the file system's remount_fs()	2014-03-13 10:14:33 -04:00
dlm	net: Fix use after free by removing length arg from sk_data_ready callbacks.	2014-04-11 16:15:36 -04:00
ecryptfs	Merge branch 'cross-rename' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs	2014-04-04 14:03:05 -07:00
efivarfs	efivarfs: 'efivarfs_file_write' function reorganization	2014-03-04 16:16:16 +00:00
efs	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
exofs	Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd	2014-04-10 14:33:02 -07:00
exportfs	…
ext2	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2014-04-07 17:59:17 -07:00
ext3	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2014-04-07 17:59:17 -07:00
ext4	These are regression and bug fixes for ext4.	2014-04-20 20:43:47 -07:00
f2fs	Merge branch 'akpm' (incoming from Andrew)	2014-04-07 16:38:06 -07:00
fat	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
freevxfs	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
fscache	FS-Cache: Handle removal of unadded object to the fscache_object_list rb tree	2014-02-17 13:47:35 -08:00
fuse	fuse: add renameat2 support	2014-04-28 16:43:44 +02:00
gfs2	mm: implement ->map_pages for page cache	2014-04-07 16:35:53 -07:00
hfs	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
hfsplus	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
hostfs	mm + fs: store shadow entries in page cache	2014-04-03 16:21:01 -07:00
hpfs	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
hppfs	…
hugetlbfs	hugetlb: ensure hugepage access is denied if hugepages are not supported	2014-05-06 13:04:58 -07:00
isofs	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2014-04-07 17:59:17 -07:00
jbd	jbd: Revise KERN_EMERG error messages	2013-12-04 12:27:46 +01:00
jbd2	jbd2: improve error messages for inconsistent journal heads	2014-03-12 16:38:03 -04:00
jffs2	MTD updates for 3.15:	2014-04-07 10:17:30 -07:00
jfs	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
kernfs	kernfs: move the last knowledge of sysfs out from kernfs	2014-06-03 08:11:18 -07:00
lockd	lockd: ensure we tear down any live sockets when socket creation fails during lockd_up	2014-03-28 10:43:08 -04:00
logfs	mm + fs: store shadow entries in page cache	2014-04-03 16:21:01 -07:00
minix	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
ncpfs	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2014-04-12 17:31:22 -07:00
nfs	mm: implement ->map_pages for page cache	2014-04-07 16:35:53 -07:00
nfs_common	…
nfsd	nfsd4: warn on finding lockowner without stateid's	2014-05-21 11:11:21 -04:00
nilfs2	mm: implement ->map_pages for page cache	2014-04-07 16:35:53 -07:00
nls	nls: have register_nls() set ->owner	2014-01-25 03:14:05 -05:00
notify	fanotify: fix -EOVERFLOW with large files on 64-bit	2014-05-06 13:04:59 -07:00
ntfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-04-12 14:49:50 -07:00
ocfs2	ocfs2: fix double kmem_cache_destroy in dlm_init	2014-05-23 09:37:30 -07:00
omfs	mm + fs: store shadow entries in page cache	2014-04-03 16:21:01 -07:00
openpromfs	fs: push sync_filesystem() down to the file system's remount_fs()	2014-03-13 10:14:33 -04:00
proc	mm: add !pte_present() check on existing hugetlb_entry callbacks	2014-06-06 13:21:16 -07:00
pstore	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
qnx4	fs: push sync_filesystem() down to the file system's remount_fs()	2014-03-13 10:14:33 -04:00
qnx6	fs: push sync_filesystem() down to the file system's remount_fs()	2014-03-13 10:14:33 -04:00
quota	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2014-04-07 17:59:17 -07:00
ramfs	fs/ramfs: move ramfs_aops to inode.c	2014-01-23 16:36:58 -08:00
reiserfs	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2014-04-07 17:59:17 -07:00
romfs	fs: push sync_filesystem() down to the file system's remount_fs()	2014-03-13 10:14:33 -04:00
squashfs	fs: push sync_filesystem() down to the file system's remount_fs()	2014-03-13 10:14:33 -04:00
sysfs	kernfs: move the last knowledge of sysfs out from kernfs	2014-06-03 08:11:18 -07:00
sysv	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
ubifs	UBIFS: fix remount error path	2014-05-05 09:31:33 +03:00
udf	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-04-12 14:49:50 -07:00
ufs	fs/ufs: remove unused ufs_super_block_third pointer	2014-04-07 16:36:16 -07:00
xfs	xfs: list_lru_init returns a negative error	2014-05-15 09:23:24 +10:00
Kconfig	kernfs: add CONFIG_KERNFS	2014-02-07 16:08:57 -08:00
Kconfig.binfmt	…
Makefile	kernfs: add CONFIG_KERNFS	2014-02-07 16:08:57 -08:00
aio.c	aio: fix potential leak in aio_run_iocb().	2014-05-01 08:37:43 -04:00
anon_inodes.c	vfs: Allocate anon_inode_inode in anon_inode_init()	2014-03-27 09:52:54 -07:00
attr.c	fs: fix iversion handling	2013-12-05 16:36:21 -06:00
bad_inode.c	…
binfmt_aout.c	…
binfmt_elf.c	exec: kill the unnecessary mm->def_flags setting in load_elf_binary()	2014-04-07 16:35:52 -07:00
binfmt_elf_fdpic.c	…
binfmt_em86.c	…
binfmt_flat.c	…
binfmt_misc.c	binfmt_misc: add missing 'break' statement	2014-04-03 16:21:16 -07:00
binfmt_script.c	…
binfmt_som.c	…
bio-integrity.c	block: Ensure we only enable integrity metadata for reads and writes	2014-04-09 08:00:06 -06:00
bio.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-04-12 14:49:50 -07:00
block_dev.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-04-12 14:49:50 -07:00
buffer.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-04-12 14:49:50 -07:00
char_dev.c	…
compat.c	locks: rename file-private locks to "open file description locks"	2014-04-22 08:23:58 -04:00
compat_binfmt_elf.c	binfmt_elf: add ELF_HWCAP2 to compat auxv entries	2014-03-04 08:05:21 +00:00
compat_ioctl.c	fs/compat: convert to COMPAT_SYSCALL_DEFINE with changing parameter types	2014-03-06 16:30:44 +01:00
coredump.c	coredump: fix va_list corruption	2014-04-19 13:23:31 -07:00
dcache.c	dcache: add missing lockdep annotation	2014-05-31 09:13:21 -07:00
dcookies.c	fs/compat: fix lookup_dcookie() parameter handling	2014-01-29 16:22:40 -08:00
direct-io.c	xfs: update for 3.15-rc1	2014-04-04 15:50:08 -07:00
drop_caches.c	drop_caches: add some documentation and info message	2014-04-03 16:21:04 -07:00
eventfd.c	eventfd_ctx_fdget(): use fdget() instead of fget()	2014-01-25 03:13:04 -05:00
eventpoll.c	epoll: do not take the nested ep->mtx on EPOLL_CTL_DEL	2014-01-02 14:40:30 -08:00
exec.c	metag: Reduce maximum stack size to 256MB	2014-05-15 00:00:35 +01:00
fcntl.c	locks: rename file-private locks to "open file description locks"	2014-04-22 08:23:58 -04:00
fhandle.c	…
file.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-04-12 14:49:50 -07:00
file_table.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-04-12 14:49:50 -07:00
filesystems.c	sys_sysfs: Add CONFIG_SYSFS_SYSCALL	2014-04-03 16:21:05 -07:00
fs-writeback.c	One of the main highlights this time, is not the patches themselves	2014-04-04 14:49:16 -07:00
fs_struct.c	…
inode.c	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
internal.h	…
ioctl.c	…
ioprio.c	…
libfs.c	…
locks.c	locks: only validate the lock vs. f_mode in F_SETLK codepaths	2014-05-09 11:41:54 -04:00
mbcache.c	ext4: each filesystem creates and uses its own mb_cache	2014-03-18 19:24:49 -04:00
mount.h	reduce m_start() cost...	2014-04-01 23:19:09 -04:00
mpage.c	block: Abstract out bvec iterator	2013-11-23 22:33:47 -08:00
namei.c	fix races between __d_instantiate() and checks of dentry flags	2014-04-19 12:30:58 -04:00
namespace.c	VFS: Make delayed_free() call free_vfsmnt()	2014-04-01 23:19:18 -04:00
no-block.c	…
open.c	These are regression and bug fixes for ext4.	2014-04-20 20:43:47 -07:00
pipe.c	switch pipe_read() to copy_page_to_iter()	2014-04-01 23:19:22 -04:00
pnode.c	smarter propagate_mnt()	2014-04-01 23:19:08 -04:00
pnode.h	smarter propagate_mnt()	2014-04-01 23:19:08 -04:00
posix_acl.c	posix_acl: handle NULL ACL in posix_acl_equiv_mode	2014-05-06 13:58:42 -04:00
proc_namespace.c	reduce m_start() cost...	2014-04-01 23:19:09 -04:00
read_write.c	Merge branch 'compat' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2014-03-31 14:32:17 -07:00
readdir.c	…
select.c	…
seq_file.c	…
signalfd.c	…
splice.c	vfs: fix vmplice_to_user()	2014-05-28 01:54:52 -04:00
stack.c	…
stat.c	…
statfs.c	…
super.c	fs: Don't return 0 from get_anon_bdev	2014-04-16 11:53:08 -07:00
sync.c	Revert "writeback: do not sync data dirtied after sync start"	2014-02-22 02:02:28 +01:00
timerfd.c	timerfd: support CLOCK_BOOTTIME clock	2014-01-23 16:57:40 -08:00
utimes.c	…
xattr.c	…