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7ad85bb76a
linux/fs/btrfs
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Josef Bacik 7ad85bb76a Btrfs: do not use btrfs_end_transaction_throttle everywhere 
A user reported a problem where things like open with O_CREAT would take up to
30 seconds when he had nfs activity on the same mount.  This is because all of
our quick metadata operations, like create, symlink etc all do
btrfs_end_transaction_throttle, which if the transaction is blocked will wait
for the commit to complete before it returns.  This adds a ridiculous amount of
latency and isn't really needed.  The normal btrfs_end_transaction will mark the
transaction as blocked and wake the transaction kthread up if it thinks the
transaction needs to end (this being in the running out of global reserve space
scenario), and this is all that is really needed since we've already done
everything we're going to do, we just need to return.  This should help people
with the latency they were seeing when using synchronous heavy workloads.
Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2012-01-16 15:28:54 -05:00
..
acl.c Btrfs: fix return value of btrfs_get_acl() 2011-10-20 18:10:47 +02:00
async-thread.c Btrfs: fix worker lock misuse in find_worker 2011-12-23 07:53:00 -05:00
async-thread.h Btrfs: fix num_workers_starting bug and other bugs in async thread 2011-12-15 11:04:21 -05:00
backref.c Btrfs: new backref walking code 2012-01-05 10:49:43 +01:00
backref.h Btrfs: added btrfs_find_all_roots() 2012-01-04 16:26:38 +01:00
btrfs_inode.h Btrfs: fix our reservations for updating an inode when completing io 2011-11-08 15:47:34 -05:00
check-integrity.c Btrfs: add optional integrity check code 2011-12-21 19:14:09 +01:00
check-integrity.h Btrfs: add optional integrity check code 2011-12-21 19:14:09 +01:00
compat.h Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code 2009-01-06 09:38:55 -05:00
compression.c btrfs: separate superblock items out of fs_info 2011-11-06 03:04:01 -05:00
compression.h btrfs: rename variables clashing with global function names 2011-05-02 13:57:19 +02:00
ctree.c Btrfs: mark delayed refs as for cow 2011-12-22 16:22:27 +01:00
ctree.h Merge branch 'integrity-check-patch-v2' of git://btrfs.giantdisaster.de/git/btrfs into integration 2012-01-16 15:27:58 -05:00
delayed-inode.c Merge branches 'for-linus' and 'for-linus-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2011-12-16 12:15:50 -08:00
delayed-inode.h atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
delayed-ref.c Btrfs: add waitqueue instead of doing busy waiting for more delayed refs 2012-01-04 16:12:48 +01:00
delayed-ref.h Btrfs: add waitqueue instead of doing busy waiting for more delayed refs 2012-01-04 16:12:48 +01:00
dir-item.c Btrfs: remove redundant code for dir item lookup 2011-08-01 14:30:48 -04:00
disk-io.c Merge branch 'integrity-check-patch-v2' of git://btrfs.giantdisaster.de/git/btrfs into integration 2012-01-16 15:27:58 -05:00
disk-io.h Merge branch 'for-chris' of git://github.com/sensille/linux into integration 2011-11-06 03:05:08 -05:00
export.c Merge branch 'ino-alloc' of git://repo.or.cz/linux-btrfs-devel into inode_numbers 2011-05-21 09:27:38 -04:00
export.h
extent_io.c Merge branch 'integrity-check-patch-v2' of git://btrfs.giantdisaster.de/git/btrfs into integration 2012-01-16 15:27:58 -05:00
extent_io.h Btrfs: add nested locking mode for paths 2012-01-04 16:12:29 +01:00
extent_map.c Btrfs: clean up code for merging extent maps 2011-08-01 14:30:50 -04:00
extent_map.h btrfs: drop gfp parameter from alloc_extent_map 2011-05-02 13:57:21 +02:00
extent-tree.c Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into integration 2012-01-16 15:26:31 -05:00
file-item.c btrfs: separate superblock items out of fs_info 2011-11-06 03:04:01 -05:00
file.c Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into integration 2012-01-16 15:26:31 -05:00
free-space-cache.c Merge branch 'for-chris' of git://repo.or.cz/linux-btrfs-devel into integration 2012-01-16 15:26:17 -05:00
free-space-cache.h btrfs: remove all unused functions 2011-05-06 12:34:03 +02:00
hash.h Btrfs: remove crc32c.h and use libcrc32c directly. 2009-06-10 11:29:53 -04:00
inode-item.c Btrfs: BUG_ON is deleted from the caller of btrfs_truncate_item & btrfs_extend_item 2011-05-23 13:24:39 -04:00
inode-map.c Btrfs: fix no reserved space for writing out inode cache 2011-11-10 20:45:04 -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: do not use btrfs_end_transaction_throttle everywhere 2012-01-16 15:28:54 -05:00
ioctl.c Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into integration 2012-01-16 15:26:31 -05:00
ioctl.h Btrfs: add balance progress reporting 2012-01-16 22:04:49 +02:00
Kconfig Btrfs: add config option to enable btrfs integrity check 2011-12-21 19:14:16 +01:00
locking.c Btrfs: add nested locking mode for paths 2012-01-04 16:12:29 +01:00
locking.h Btrfs: switch the btrfs tree locks to reader/writer 2011-07-27 12:46:46 -04:00
lzo.c Btrfs: Avoid accessing unmapped kernel address 2011-02-16 15:37:58 -05:00
Makefile Merge branch 'integrity-check-patch-v2' of git://btrfs.giantdisaster.de/git/btrfs into integration 2012-01-16 15:27:58 -05:00
ordered-data.c Btrfs: add initial tracepoint support for btrfs 2011-03-28 05:37:33 -04:00
ordered-data.h btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
orphan.c Btrfs: fixup return code for btrfs_del_orphan_item 2010-12-09 13:57:15 -05:00
print-tree.c btrfs: fix oops on failure path 2011-10-20 18:10:50 +02:00
print-tree.h
reada.c Btrfs: rename btrfs_bio multi -> bbio for consistency 2011-11-06 03:11:21 -05:00
relocation.c Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into integration 2012-01-16 15:26:31 -05:00
root-tree.c btrfs: make btrfs_set_root_node void 2011-08-01 14:30:44 -04:00
scrub.c Merge branch 'integrity-check-patch-v2' of git://btrfs.giantdisaster.de/git/btrfs into integration 2012-01-16 15:27:58 -05:00
struct-funcs.c Btrfs: stop using highmem for extent_buffers 2011-07-27 12:46:45 -04:00
super.c Merge branch 'integrity-check-patch-v2' of git://btrfs.giantdisaster.de/git/btrfs into integration 2012-01-16 15:27:58 -05:00
sysfs.c btrfs: Remove unused sysfs code 2011-06-17 14:54:18 -04:00
transaction.c Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into integration 2012-01-16 15:26:31 -05:00
transaction.h Merge branch 'for-chris' of 2011-05-28 07:00:39 -04:00
tree-defrag.c btrfs: drop unused parameter from btrfs_release_path 2011-05-02 13:57:22 +02:00
tree-log.c Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into integration 2012-01-16 15:26:31 -05:00
tree-log.h btrfs: remove unused function prototypes 2011-05-04 14:01:26 +02:00
ulist.c Btrfs: generic data structure to build unique lists 2011-12-22 16:22:24 +01:00
ulist.h Btrfs: generic data structure to build unique lists 2011-12-22 16:22:24 +01:00
version.h Update Btrfs files for in-kernel usage 2008-09-25 15:41:59 -04:00
volumes.c Merge branch 'integrity-check-patch-v2' of git://btrfs.giantdisaster.de/git/btrfs into integration 2012-01-16 15:27:58 -05:00
volumes.h Merge branch 'for-chris' of git://repo.or.cz/linux-btrfs-devel into integration 2012-01-16 15:26:17 -05:00
xattr.c Btrfs: do not use btrfs_end_transaction_throttle everywhere 2012-01-16 15:28:54 -05:00
xattr.h fs/vfs/security: pass last path component to LSM on inode creation 2011-02-01 11:12:29 -05:00
zlib.c zlib: slim down zlib_deflate() workspace when possible 2011-03-22 17:44:17 -07:00