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c6adc9cc08
linux/fs/btrfs
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Miao Xie c6adc9cc08 Btrfs: merge pending IO for tree log write back 
Before applying this patch, we flushed the log tree of the fs/file
tree firstly, and then flushed the log root tree. It is ineffective,
especially on the hard disk. This patch improved this problem by wrapping
the above two flushes by the same blk_plug.

By test, the performance of the sync write went up ~60%(2.9MB/s -> 4.6MB/s)
on my scsi disk whose disk buffer was enabled.

Test step:
 # mkfs.btrfs -f -m single <disk>
 # mount <disk> <mnt>
 # dd if=/dev/zero of=<mnt>/file0 bs=32K count=1024 oflag=sync

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
2013-06-14 11:30:05 -04:00
..
acl.c Btrfs: skip adding an acl attribute if we don't have to 2012-12-16 20:46:15 -05:00
async-thread.c Btrfs: call the ordered free operation without any locks held 2012-07-25 16:15:07 -04:00
async-thread.h
backref.c Btrfs: fix possible memory leak in the find_parent_nodes() 2013-05-17 21:40:17 -04:00
backref.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
btrfs_inode.h btrfs: fix minor typo in comment 2013-05-06 15:54:49 -04:00
check-integrity.c Btrfs: use a btrfs bioset instead of abusing bio internals 2013-05-17 21:52:52 -04:00
check-integrity.h
compat.h
compression.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
compression.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
ctree.c Btrfs: check if leaf's parent exists before pushing items around 2013-06-14 11:29:58 -04:00
ctree.h Btrfs: make the state of the transaction more readable 2013-06-14 11:29:51 -04:00
delayed-inode.c Btrfs: delete unused function 2013-06-14 11:29:28 -04:00
delayed-inode.h Btrfs: improve the delayed inode throttling 2013-03-07 07:52:40 -05:00
delayed-ref.c Btrfs: separate sequence numbers for delayed ref tracking and tree mod log 2013-05-06 15:55:17 -04:00
delayed-ref.h Btrfs: handle running extent ops with skinny metadata 2013-05-17 21:40:15 -04:00
dev-replace.c Btrfs: introduce per-subvolume ordered extent list 2013-06-14 11:29:41 -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: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
disk-io.c Btrfs: make the state of the transaction more readable 2013-06-14 11:29:51 -04:00
disk-io.h Btrfs: introduce grab/put functions for the root of the fs/file tree 2013-06-14 11:29:38 -04:00
export.c Btrfs: cleanup: don't check the same thing twice 2013-06-14 11:29:30 -04:00
export.h
extent_io.c btrfs: add debug check for extent_io range alignment 2013-06-14 11:29:15 -04:00
extent_io.h Btrfs: use a btrfs bioset instead of abusing bio internals 2013-05-17 21:52:52 -04:00
extent_map.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
extent_map.h Btrfs: fix bad extent logging 2013-05-06 15:54:34 -04:00
extent-tree.c Btrfs: introduce per-subvolume ordered extent list 2013-06-14 11:29:41 -04:00
file-item.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
file.c Btrfs: cleanup: don't check the same thing twice 2013-06-14 11:29:30 -04:00
free-space-cache.c Btrfs: return error code in btrfs_check_trunc_cache_free_space() 2013-06-14 11:29:56 -04:00
free-space-cache.h btrfs: move ifdef around sanity checks out of init_btrfs_fs 2013-06-14 11:29:18 -04:00
hash.h btrfs: extended inode refs 2012-10-09 09:14:45 -04:00
inode-item.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
inode-map.c Btrfs: don't use global block reservation for inode cache truncation 2013-05-17 21:40:22 -04:00
inode-map.h
inode.c Btrfs: introduce per-subvolume ordered extent list 2013-06-14 11:29:41 -04:00
ioctl.c Btrfs: allow file data clone within a file 2013-06-14 11:30:03 -04:00
Kconfig btrfs: move leak debug code to functions 2013-05-06 15:55:16 -04:00
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
Makefile Btrfs: RAID5 and RAID6 2013-02-01 14:24:23 -05:00
math.h Btrfs: cleanup duplicated division functions 2012-12-11 13:31:30 -05:00
ordered-data.c Btrfs: introduce per-subvolume ordered extent list 2013-06-14 11:29:41 -04:00
ordered-data.h Btrfs: introduce per-subvolume ordered extent list 2013-06-14 11:29:41 -04:00
orphan.c
print-tree.c Btrfs: Include the device in most error printk()s 2013-05-06 15:54:23 -04:00
print-tree.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
qgroup.c Btrfs: add ioctl to wait for qgroup rescan completion 2013-06-14 11:29:22 -04:00
raid56.c Btrfs: use a btrfs bioset instead of abusing bio internals 2013-05-17 21:52:52 -04:00
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: fix reada debug code compilation 2013-05-06 15:54:55 -04:00
relocation.c Btrfs: introduce per-subvolume ordered extent list 2013-06-14 11:29:41 -04:00
root-tree.c Btrfs: remove unused code in btrfs_del_root 2013-06-14 11:30:02 -04:00
scrub.c Btrfs: use a btrfs bioset instead of abusing bio internals 2013-05-17 21:52:52 -04:00
send.c Btrfs: fix estale with btrfs send 2013-06-14 11:29:55 -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: do delay iput in sync_fs 2013-06-14 11:29:52 -04:00
sysfs.c btrfs: fixup/remove module.h usage as required 2013-03-01 15:01:01 -05:00
transaction.c Btrfs: merge pending IO for tree log write back 2013-06-14 11:30:05 -04:00
transaction.h Btrfs: make the state of the transaction more readable 2013-06-14 11:29:51 -04:00
tree-defrag.c btrfs: remove cache only arguments from defrag path 2013-02-20 12:59:36 -05:00
tree-log.c Btrfs: merge pending IO for tree log write back 2013-06-14 11:30:05 -04:00
tree-log.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
ulist.c Btrfs: add a rb_tree to improve performance of ulist search 2013-05-06 15:54:44 -04:00
ulist.h Btrfs: add a rb_tree to improve performance of ulist search 2013-05-06 15:54:44 -04:00
volumes.c btrfs: device delete to get errors from the kernel 2013-06-14 11:29:53 -04:00
volumes.h Btrfs: cleanup the similar code of the fs root read 2013-06-14 11:29:37 -04:00
xattr.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
xattr.h
zlib.c btrfs: fix message printing 2012-10-09 09:19:57 -04:00