Chris Mason 240d5d482b Btrfs: tune btrfs unplug functions for a small number of devices ...

When btrfs unplugs, it tries to find the correct device to unplug
via search through the extent_map tree.  This avoids unplugging
a device that doesn't need it, but is a waste of time for filesystems
with a small number of devices.

This patch checks the total number of devices before doing the
search.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

2008-11-10 13:08:31 -05:00

..

acl.c

Btrfs: optimize btrget/set/removexattr

2008-09-25 11:04:07 -04:00

async-thread.c

Btrfs: Add ordered async work queues

2008-11-06 22:03:00 -05:00

async-thread.h

Btrfs: Add ordered async work queues

2008-11-06 22:03:00 -05:00

btrfs_inode.h

Btrfs: add and improve comments

2008-09-29 15:18:18 -04:00

compat.h

Remove Btrfs compat code for older kernels

2008-09-25 15:41:59 -04:00

compression.c

Btrfs: Fix use after free during compressed reads

2008-11-10 11:44:58 -05:00

compression.h

Btrfs: Add zlib compression support

2008-10-29 14:49:59 -04:00

COPYING

Btrfs: add GPLv2

2007-06-12 09:07:21 -04:00

crc32c.h

Btrfs: add and improve comments

2008-09-29 15:18:18 -04:00

ctree.c

Btrfs: nuke fs wide allocation mutex V2

2008-10-29 14:49:05 -04:00

ctree.h

Btrfs: Optimize compressed writeback and reads

2008-11-06 22:02:51 -05:00

dir-item.c

Btrfs: add and improve comments

2008-09-29 15:18:18 -04:00

disk-io.c

Btrfs: tune btrfs unplug functions for a small number of devices

2008-11-10 13:08:31 -05:00

disk-io.h

Btrfs: Add ordered async work queues

2008-11-06 22:03:00 -05:00

export.c

Remove Btrfs compat code for older kernels

2008-09-25 15:41:59 -04:00

export.h

NFS support for btrfs - v3

2008-09-25 11:04:06 -04:00

extent_io.c

Btrfs: Turn off extent state leak debugging

2008-11-10 12:34:40 -05:00

extent_io.h

Btrfs: Optimize compressed writeback and reads

2008-11-06 22:02:51 -05:00

extent_map.c

Btrfs: Add zlib compression support

2008-10-29 14:49:59 -04:00

extent_map.h

Btrfs: Fix csum error for compressed data

2008-11-10 07:34:43 -05:00

extent-tree.c

Btrfs: Try harder while searching for free space

2008-11-10 11:47:09 -05:00

file-item.c

Btrfs: Use invalidatepage when writepage finds a page outside of i_size

2008-11-10 11:50:50 -05:00

file.c

Btrfs: Fix usage of struct extent_map->orig_start

2008-11-10 11:53:33 -05:00

free-space-cache.c

Btrfs: nuke fs wide allocation mutex V2

2008-10-29 14:49:05 -04:00

hash.h

Switch btrfs_name_hash() to crc32c

2008-09-25 11:04:06 -04:00

inode-item.c

Btrfs: Implement new dir index format

2008-09-25 11:04:05 -04:00

inode-map.c

Btrfs: extent_map and data=ordered fixes for space balancing

2008-09-26 10:05:38 -04:00

inode.c

Btrfs: Fix usage of struct extent_map->orig_start

2008-11-10 11:53:33 -05:00

INSTALL

Btrfs: Documentation update

2007-06-22 14:49:31 -04:00

ioctl.c

Btrfs: Add fallocate support v2

2008-10-30 14:25:28 -04:00

ioctl.h

Btrfs: transaction ioctls

2008-09-25 11:04:03 -04:00

locking.c

Btrfs: add and improve comments

2008-09-29 15:18:18 -04:00

locking.h

btrfs_search_slot: reduce lock contention by cowing in two stages

2008-09-25 11:04:06 -04:00

Makefile

Btrfs: Add zlib compression support

2008-10-29 14:49:59 -04:00

ordered-data.c

Btrfs: Optimize compressed writeback and reads

2008-11-06 22:02:51 -05:00

ordered-data.h

Btrfs: Add fallocate support v2

2008-10-30 14:25:28 -04:00

orphan.c

Btrfs: Create orphan inode records to prevent lost files after a crash

2008-09-25 11:04:05 -04:00

print-tree.c

Btrfs: Add zlib compression support

2008-10-29 14:49:59 -04:00

print-tree.h

Btrfs: Create extent_buffer interface for large blocksizes

2008-09-25 11:03:56 -04:00

ref-cache.c

Btrfs: add and improve comments

2008-09-29 15:18:18 -04:00

ref-cache.h

Btrfs: add and improve comments

2008-09-29 15:18:18 -04:00

root-tree.c

Btrfs: add and improve comments

2008-09-29 15:18:18 -04:00

struct-funcs.c

Btrfs: add and improve comments

2008-09-29 15:18:18 -04:00

super.c

Btrfs: Optimize compressed writeback and reads

2008-11-06 22:02:51 -05:00

sysfs.c

Remove Btrfs compat code for older kernels

2008-09-25 15:41:59 -04:00

transaction.c

Btrfs: Avoid unplug storms during commit

2008-11-07 18:22:45 -05:00

transaction.h

Btrfs: Record dirty pages tree-log pages in an extent_io tree

2008-09-25 11:04:07 -04:00

tree-defrag.c

Btrfs: nuke fs wide allocation mutex V2

2008-10-29 14:49:05 -04:00

tree-log.c

Btrfs: Add fallocate support v2

2008-10-30 14:25:28 -04:00

tree-log.h

Btrfs: Add a write ahead tree log to optimize synchronous operations

2008-09-25 11:04:07 -04:00

version.h

Update Btrfs files for in-kernel usage

2008-09-25 15:41:59 -04:00

version.sh

Btrfs: Update version.sh to v0.16

2008-09-25 11:04:06 -04:00

volumes.c

Btrfs: Avoid unplug storms during commit

2008-11-07 18:22:45 -05:00

volumes.h

Btrfs: Fix the multi-bio code to save the original bio for completion

2008-09-25 11:04:06 -04:00

xattr.c

Btrfs: optimize btrget/set/removexattr

2008-09-25 11:04:07 -04:00

xattr.h

Btrfs: optimize btrget/set/removexattr

2008-09-25 11:04:07 -04:00

zlib.c

Btrfs: Optimize compressed writeback and reads

2008-11-06 22:02:51 -05:00