Josef Bacik d7df2c796d Btrfs: attach delayed ref updates to delayed ref heads ... Currently we have two rb-trees, one for delayed ref heads and one for all of the delayed refs, including the delayed ref heads. When we process the delayed refs we have to hold onto the delayed ref lock for all of the selecting and merging and such, which results in quite a bit of lock contention. This was solved by having a waitqueue and only one flusher at a time, however this hurts if we get a lot of delayed refs queued up. So instead just have an rb tree for the delayed ref heads, and then attach the delayed ref updates to an rb tree that is per delayed ref head. Then we only need to take the delayed ref lock when adding new delayed refs and when selecting a delayed ref head to process, all the rest of the time we deal with a per delayed ref head lock which will be much less contentious. The locking rules for this get a little more complicated since we have to lock up to 3 things to properly process delayed refs, but I will address that problem later. For now this passes all of xfstests and my overnight stress tests. Thanks, Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Chris Mason <clm@fb.com>		2014-01-28 13:20:25 -08:00
..
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: fix __btrfs_start_workers retval	2013-11-20 20:42:11 -05:00
async-thread.h	Btrfs: eliminate races in worker stopping code	2013-10-04 16:02:13 -04:00
backref.c	Btrfs: attach delayed ref updates to delayed ref heads	2014-01-28 13:20:25 -08:00
backref.h	Btrfs: allocate prelim_ref with a slab allocater	2013-09-01 08:16:27 -04:00
btrfs_inode.h	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
check-integrity.c	Btrfs: fix check-integrity to look at the referenced data properly	2014-01-28 13:19:21 -08:00
check-integrity.h	block: submit_bio_wait() conversions	2013-11-24 16:33:41 -07:00
compression.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
compression.h	btrfs: make static code static & remove dead code	2013-05-06 15:55:23 -04:00
ctree.c	Btrfs: reduce btree node locking duration on item update	2014-01-28 13:20:11 -08:00
ctree.h	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
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: attach delayed ref updates to delayed ref heads	2014-01-28 13:20:25 -08:00
delayed-ref.h	Btrfs: attach delayed ref updates to delayed ref heads	2014-01-28 13:20:25 -08:00
dev-replace.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
dev-replace.h
dir-item.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
disk-io.c	Btrfs: attach delayed ref updates to delayed ref heads	2014-01-28 13:20:25 -08:00
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
extent-tree.c	Btrfs: attach delayed ref updates to delayed ref heads	2014-01-28 13:20:25 -08:00
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
file-item.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
file.c	Btrfs: make fsync latency less sucky	2014-01-28 13:20:25 -08:00
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.h
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
inode.c	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
ioctl.c	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
Kconfig	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2013-11-22 08:38:55 -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: add support for inode properties	2014-01-28 13:20:24 -08:00
math.h
ordered-data.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
ordered-data.h	Btrfs: don't wait for the completion of all the ordered extents	2013-11-11 22:13:44 -05:00
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: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -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: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
raid56.c	btrfs: remove fs/btrfs/compat.h	2013-11-11 22:03:19 -05:00
raid56.h
rcu-string.h
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: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
scrub.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
send.c	Btrfs: remove unnecessary transaction commit before send	2014-01-28 13:20:22 -08:00
send.h	btrfs: make static code static & remove dead code	2013-05-06 15:55:23 -04:00
struct-funcs.c
super.c	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
sysfs.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
sysfs.h	btrfs: publish allocation data in sysfs	2014-01-28 13:19:29 -08:00
transaction.c	Btrfs: attach delayed ref updates to delayed ref heads	2014-01-28 13:20:25 -08:00
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: faster file extent item replace operations	2014-01-28 13:20:23 -08:00
tree-log.h	btrfs: make static code static & remove dead code	2013-05-06 15:55:23 -04:00
ulist.c	Btrfs: fix crash regarding to ulist_add_merge	2013-07-02 11:50:59 -04:00
ulist.h	Btrfs: add a rb_tree to improve performance of ulist search	2013-05-06 15:54:44 -04:00
uuid-tree.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
volumes.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00
volumes.h	btrfs: Pack struct btrfs_device	2013-11-11 22:11:26 -05:00
xattr.c	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
xattr.h
zlib.c	Btrfs: convert printk to btrfs_ and fix BTRFS prefix	2014-01-28 13:20:05 -08:00