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efd049fb26
linux/fs/btrfs
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Josef Bacik efd049fb26 Btrfs: do not try and lookup the file extent when finishing ordered io 
When running the following fio job

[torrent]
filename=torrent-test
rw=randwrite
size=4g
filesize=4g
bs=4k
ioengine=sync

you would see long stalls where no work was being done.  That is because we were
doing all this extra work to read in the file extent outside of the transaction,
however in the random io case this ends up hurting us because the file extents
are not there to begin with.  So axe this logic, since we end up reading in the
file extent when we go to update it anyway.  This took the fio job from 11 mb/s
with several ~10 second stalls to 24 mb/s to a couple of 1-2 second stalls.

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-02-04 11:31:45 -05:00
..
acl.c Btrfs: fix a memory leak in btrfs_init_acl 2010-01-28 16:20:39 -05:00
async-thread.c Btrfs: fix deadlock on async thread startup 2009-10-05 09:44:45 -04:00
async-thread.h Btrfs: fix deadlock on async thread startup 2009-10-05 09:44:45 -04:00
btrfs_inode.h Btrfs: Fix disk_i_size update corner case 2009-12-17 12:33:24 -05:00
compat.h Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code 2009-01-06 09:38:55 -05:00
compression.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 2009-09-11 19:07:25 -04:00
compression.h Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
ctree.c Btrfs: Fix per root used space accounting 2009-12-17 12:33:35 -05:00
ctree.h Btrfs: Add mount -o compress-force 2010-01-28 16:18:15 -05:00
delayed-ref.c Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE) 2009-06-10 11:29:46 -04:00
delayed-ref.h Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE) 2009-06-10 11:29:46 -04:00
dir-item.c Btrfs: Pass transaction handle to security and ACL initialization functions 2009-12-17 12:33:34 -05:00
disk-io.c Btrfs: remove BUG_ON() due to mounting bad filesystem 2010-02-04 11:31:44 -05:00
disk-io.h Btrfs: leave btree locks spinning more often 2009-03-24 16:14:28 -04:00
export.c Btrfs: add snapshot/subvolume destroy ioctl 2009-09-21 16:00:26 -04:00
export.h NFS support for btrfs - v3 2008-09-25 11:04:06 -04:00
extent_io.c Btrfs: fix race between allocate and release extent buffer. 2010-02-04 11:31:44 -05:00
extent_io.h Btrfs: release delalloc reservations on extent item insertion 2009-10-08 15:21:10 -04:00
extent_map.c Btrfs: remove tree_search() in extent_map.c 2010-01-28 16:20:38 -05:00
extent_map.h Btrfs: search for an allocation hint while filling file COW 2009-09-18 16:08:52 -04:00
extent-tree.c Btrfs: Fix oopsen when dropping empty tree. 2010-02-04 11:31:45 -05:00
file-item.c Btrfs: leave btree locks spinning more often 2009-03-24 16:14:28 -04:00
file.c Btrfs: make error return negative in btrfs_sync_file() 2010-02-04 11:31:44 -05:00
free-space-cache.c Btrfs: fix how we set max_size for free space clusters 2009-11-11 14:20:17 -05:00
free-space-cache.h Btrfs: use hybrid extents+bitmap rb tree for free space 2009-07-24 09:23:30 -04:00
hash.h Btrfs: remove crc32c.h and use libcrc32c directly. 2009-06-10 11:29:53 -04:00
inode-item.c Btrfs: check size of inode backref before adding hardlink 2009-09-24 09:17:31 -04:00
inode-map.c Btrfs: do not reuse objectid of deleted snapshot/subvol 2009-09-21 15:56:00 -04:00
inode.c Btrfs: do not try and lookup the file extent when finishing ordered io 2010-02-04 11:31:45 -05:00
ioctl.c Btrfs: Fix per root used space accounting 2009-12-17 12:33:35 -05:00
ioctl.h Btrfs: add snapshot/subvolume destroy ioctl 2009-09-21 16:00:26 -04:00
Kconfig Btrfs: make btrfs acls selectable 2009-02-04 09:28:28 -05:00
locking.c Btrfs: fix typos in comments 2009-04-02 16:46:06 -04:00
locking.h Btrfs: fix spinlock assertions on UP systems 2009-03-09 11:45:38 -04:00
Makefile Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE) 2009-06-10 11:29:46 -04:00
ordered-data.c Btrfs: align offsets for btrfs_ordered_update_i_size 2010-01-17 20:06:27 -05:00
ordered-data.h Btrfs: Add delayed iput 2009-12-17 12:33:35 -05:00
orphan.c Btrfs: change how subvolumes are organized 2009-09-21 15:56:00 -04:00
print-tree.c Btrfs: remove of redundant btrfs_header_level 2009-07-22 16:52:13 -04:00
print-tree.h
ref-cache.c Btrfs: Make btrfs_drop_snapshot work in larger and more efficient chunks 2009-02-04 09:27:02 -05:00
ref-cache.h Btrfs: Make btrfs_drop_snapshot work in larger and more efficient chunks 2009-02-04 09:27:02 -05:00
relocation.c Btrfs: remove BUG_ON() due to mounting bad filesystem 2010-02-04 11:31:44 -05:00
root-tree.c Btrfs: skip btrfs_release_path in btrfs_update_root and btrfs_del_root 2009-11-11 14:20:18 -05:00
struct-funcs.c Btrfs: Fix checkpatch.pl warnings 2009-01-05 21:25:51 -05:00
super.c Btrfs: Add mount -o compress-force 2010-01-28 16:18:15 -05:00
sysfs.c Btrfs: Fix checkpatch.pl warnings 2009-01-05 21:25:51 -05:00
transaction.c Btrfs: Fix per root used space accounting 2009-12-17 12:33:35 -05:00
transaction.h Btrfs: Avoid superfluous tree-log writeout 2009-12-15 21:24:25 -05:00
tree-defrag.c Btrfs: do extent allocation and reference count updates in the background 2009-03-24 16:14:25 -04:00
tree-log.c Btrfs: Avoid orphan inodes cleanup while replaying log 2009-12-17 12:33:33 -05:00
tree-log.h Btrfs: avoid tree log commit when there are no changes 2009-10-13 13:35:12 -04:00
version.h Update Btrfs files for in-kernel usage 2008-09-25 15:41:59 -04:00
version.sh Btrfs: Fixes for 2.6.28-rc API changes 2008-11-19 21:17:22 -05:00
volumes.c Btrfs: check total number of devices when removing missing 2010-01-28 16:20:39 -05:00
volumes.h Btrfs: make balance code choose more wisely when relocating 2009-09-21 19:23:48 -04:00
xattr.c Btrfs: Pass transaction handle to security and ACL initialization functions 2009-12-17 12:33:34 -05:00
xattr.h Btrfs: Pass transaction handle to security and ACL initialization functions 2009-12-17 12:33:34 -05:00
zlib.c Btrfs: correct error-handling zlib error handling 2009-08-07 13:51:33 -04:00