Wang Shilong 32a447896c Btrfs: wake up @scrub_pause_wait as much as we can ... check if @scrubs_running=@scrubs_paused condition inside wait_event() is not an atomic operation which means we may inc/dec @scrub_running/ paused at any time. Let's wake up @scrub_pause_wait as much as we can to let commit transaction blocked less. An example below: Thread1 Thread2 |->scrub_blocked_if_needed() |->scrub_pending_trans_workers_inc |->increase @scrub_paused |->increase @scrub_running |->wake up scrub_pause_wait list |->scrub blocked |->increase @scrub_paused Thread3 is commiting transaction which is blocked at btrfs_scrub_pause(). So after Thread2 increase @scrub_paused, we meet the condition @scrub_paused=@scrub_running, but transaction will be still blocked until another calling to wake up @scrub_pause_wait. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Josef Bacik <jbacik@fb.com>		2014-03-10 15:16:54 -04:00
..
tests	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
acl.c	btrfs: remove dead code	2014-01-28 13:19:50 -08:00
async-thread.c	btrfs: always choose work from prio_head first	2014-03-10 15:16:36 -04:00
async-thread.h	Btrfs: eliminate races in worker stopping code	2013-10-04 16:02:13 -04:00
backref.c	Btrfs: switch to btrfs_previous_extent_item()	2014-03-10 15:15:54 -04:00
backref.h	Btrfs: allocate prelim_ref with a slab allocater	2013-09-01 08:16:27 -04:00
btrfs_inode.h	Btrfs: use signed integer instead of unsigned long integer for log transid	2014-03-10 15:16:42 -04:00
check-integrity.c	Btrfs: use btrfs_crc32c everywhere instead of libcrc32c	2014-02-03 09:01:27 -08:00
check-integrity.h	block: submit_bio_wait() conversions	2013-11-24 16:33:41 -07:00
compression.c	Btrfs: fix data corruption when reading/updating compressed extents	2014-02-08 17:57:15 -08:00
compression.h	btrfs: make static code static & remove dead code	2013-05-06 15:55:23 -04:00
ctree.c	Btrfs: correctly determine if blocks are shared in btrfs_compare_trees	2014-03-10 15:16:50 -04:00
ctree.h	Btrfs: just wait or commit our own log sub-transaction	2014-03-10 15:16:43 -04:00
delayed-inode.c	Btrfs: introduce the delayed inode ref deletion for the single link inode	2014-01-28 13:20:09 -08:00
delayed-inode.h	Btrfs: introduce the delayed inode ref deletion for the single link inode	2014-01-28 13:20:09 -08:00
delayed-ref.c	Btrfs: cleanup delayed-ref.c:find_ref_head()	2014-03-10 15:16:46 -04:00
delayed-ref.h	Btrfs: attach delayed ref updates to delayed ref heads	2014-01-28 13:20:25 -08:00
dev-replace.c	Btrfs: fix use-after-free in the finishing procedure of the device replace	2014-03-10 15:15:39 -04:00
dev-replace.h	Btrfs: add new sources for device replace code	2012-12-12 17:15:41 -05:00
dir-item.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
disk-io.c	Btrfs: just wait or commit our own log sub-transaction	2014-03-10 15:16:43 -04:00
disk-io.h	Btrfs: add a sanity test for btrfs_split_item	2013-11-11 21:51:02 -05:00
export.c	btrfs: remove fs/btrfs/compat.h	2013-11-11 22:03:19 -05:00
export.h	NFS support for btrfs - v3	2008-09-25 11:04:06 -04:00
extent_io.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
extent_io.h	Btrfs: move the extent buffer radix tree into the fs_info	2014-01-28 13:19:55 -08:00
extent_map.c	Btrfs: fix extent_map block_len after merging	2014-01-28 13:19:51 -08:00
extent_map.h	btrfs: Enclose macros with complex values within parenthesis	2013-11-11 22:12:06 -05:00
extent-tree.c	Btrfs: don't loop forever if we can't run because of the tree mod log	2014-02-08 17:57:15 -08:00
file-item.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
file.c	Btrfs: don't insert useless holes when punching beyond the inode's size	2014-03-10 15:16:47 -04:00
free-space-cache.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
free-space-cache.h	Btrfs: remove path arg from btrfs_truncate_free_space_cache	2013-11-11 21:51:33 -05:00
hash.c	Btrfs: fix btrfs boot when compiled as built-in	2014-01-28 13:20:31 -08:00
hash.h	Btrfs: fix btrfs boot when compiled as built-in	2014-01-28 13:20:31 -08:00
inode-item.c	btrfs: cleanup: removed unused 'btrfs_get_inode_ref_index'	2014-01-28 13:19:39 -08:00
inode-map.c	btrfs: Use WARN_ON()'s return value in place of WARN_ON(1)	2013-11-11 22:11:53 -05:00
inode-map.h	Btrfs: Support reading/writing on disk free ino cache	2011-04-25 16:46:11 +08:00
inode.c	Btrfs: avoid warning bomb of btrfs_invalidate_inodes	2014-03-10 15:16:38 -04:00
ioctl.c	btrfs: Fix 32/64-bit problem with BTRFS_SET_RECEIVED_SUBVOL ioctl	2014-03-10 15:15:40 -04:00
Kconfig	Btrfs: fix btrfs boot when compiled as built-in	2014-01-28 13:20:31 -08:00
locking.c	btrfs: make static code static & remove dead code	2013-05-06 15:55:23 -04:00
locking.h	Btrfs: remove btrfs_try_spin_lock	2013-03-14 14:57:10 -04:00
lzo.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
Makefile	Btrfs: fix btrfs boot when compiled as built-in	2014-01-28 13:20:31 -08:00
math.h	Btrfs: cleanup duplicated division functions	2012-12-11 13:31:30 -05:00
ordered-data.c	Btrfs: don't mix the ordered extents of all files together during logging the inodes	2014-03-10 15:15:36 -04:00
ordered-data.h	Btrfs: don't mix the ordered extents of all files together during logging the inodes	2014-03-10 15:15:36 -04:00
orphan.c	btrfs: expand btrfs_find_item() to include find_orphan_item functionality	2014-01-28 13:19:37 -08:00
print-tree.c	Btrfs: don't use ram_bytes for uncompressed inline items	2014-01-29 07:06:29 -08:00
print-tree.h	btrfs: make static code static & remove dead code	2013-05-06 15:55:23 -04:00
props.c	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
props.h	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
qgroup.c	Btrfs: fix qgroup rescan to work with skinny metadata	2014-01-28 13:20:27 -08:00
raid56.c	btrfs: remove fs/btrfs/compat.h	2013-11-11 22:03:19 -05:00
raid56.h	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
rcu-string.h	Btrfs: use rcu to protect device->name	2012-06-14 21:29:16 -04:00
reada.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
relocation.c	Btrfs: fix an oops when we fail to relocate tree blocks	2014-01-28 13:20:14 -08:00
root-tree.c	btrfs: Use PTR_ERR_OR_ZERO	2014-03-10 15:16:51 -04:00
scrub.c	Btrfs: wake up @scrub_pause_wait as much as we can	2014-03-10 15:16:54 -04:00
send.c	Btrfs: fix send issuing outdated paths for utimes, chown and chmod	2014-03-10 15:16:51 -04:00
send.h	btrfs: make static code static & remove dead code	2013-05-06 15:55:23 -04:00
struct-funcs.c	Btrfs: rewrite BTRFS_SETGET_FUNCS	2012-07-23 16:28:06 -04:00
super.c	btrfs: wake up transaction thread upon remount	2014-03-10 15:16:45 -04:00
sysfs.c	btrfs: add simple debugfs interface	2014-03-10 15:15:51 -04:00
sysfs.h	btrfs: add simple debugfs interface	2014-03-10 15:15:51 -04:00
transaction.c	Btrfs: cancel scrub on transaction abortion	2014-03-10 15:16:54 -04:00
transaction.h	Btrfs: make fsync latency less sucky	2014-01-28 13:20:25 -08:00
tree-defrag.c	Btrfs: cleanup dead code of defragment	2013-11-11 21:59:45 -05:00
tree-log.c	Btrfs: stop joining the log transaction if sync log fails	2014-03-10 15:16:44 -04:00
tree-log.h	Btrfs: just wait or commit our own log sub-transaction	2014-03-10 15:16:43 -04:00
ulist.c	Btrfs: do not export ulist functions	2014-01-29 07:06:27 -08:00
ulist.h	Btrfs: do not export ulist functions	2014-01-29 07:06:27 -08:00
uuid-tree.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
volumes.c	Btrfs: fix use-after-free in the finishing procedure of the device replace	2014-03-10 15:15:39 -04:00
volumes.h	Btrfs: fix use-after-free in the finishing procedure of the device replace	2014-03-10 15:15:39 -04:00
xattr.c	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
xattr.h	fs/vfs/security: pass last path component to LSM on inode creation	2011-02-01 11:12:29 -05:00
zlib.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00