kevin/linux
1
Fork 0
Code
026fd31782
linux/fs/btrfs
History
Josef Bacik 026fd31782 Btrfs: don't always do readahead 
Our readahead is sort of sloppy, and really isn't always needed.  For example if
ls is doing a stating ls (which is the default) it's going to stat in non-disk
order, so if say you have a directory with a stupid amount of files, readahead
is going to do nothing but waste time in the case of doing the stat.  Taking the
unconditional readahead out made my test go from 57 minutes to 36 minutes.  This
means that everywhere we do loop through the tree we want to make sure we do set
path->reada properly, so I went through and found all of the places where we
loop through the path and set reada to 1.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
2011-05-23 13:03:14 -04:00
..
acl.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 2011-05-15 10:22:10 -07:00
async-thread.c
async-thread.h
btrfs_inode.h Btrfs: kill BTRFS_I(inode)->block_group 2011-05-23 13:03:12 -04:00
compat.h
compression.c Btrfs: check return value of btrfs_alloc_path() 2011-03-28 05:37:54 -04:00
compression.h btrfs: Extract duplicate decompress code 2010-12-22 23:15:50 +08:00
ctree.c Btrfs: don't always do readahead 2011-05-23 13:03:14 -04:00
ctree.h Btrfs: kill BTRFS_I(inode)->block_group 2011-05-23 13:03:12 -04:00
delayed-ref.c Btrfs: add initial tracepoint support for btrfs 2011-03-28 05:37:33 -04:00
delayed-ref.h
dir-item.c Btrfs: check return value of btrfs_alloc_path() 2011-03-28 05:37:54 -04:00
disk-io.c Btrfs: kill trans_mutex 2011-05-23 13:00:57 -04:00
disk-io.h Btrfs: forced readonly mounts on errors 2011-01-17 15:13:08 -05:00
export.c exportfs: Return the minimum required handle size 2011-03-14 09:15:28 -04:00
export.h
extent_io.c Btrfs: set range_start to the right start in count_range_bits 2011-05-23 13:03:09 -04:00
extent_io.h btrfs: using cached extent_state in set/unlock combinations 2011-04-11 20:45:36 -04:00
extent_map.c Fix common misspellings 2011-03-31 11:26:23 -03:00
extent_map.h btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
extent-tree.c Btrfs: don't always do readahead 2011-05-23 13:03:14 -04:00
file-item.c Btrfs: check return value of btrfs_alloc_path() 2011-03-28 05:37:54 -04:00
file.c Btrfs: kill trans_mutex 2011-05-23 13:00:57 -04:00
free-space-cache.c Btrfs: free bitmaps properly when evicting the cache 2011-04-25 19:43:52 -04:00
free-space-cache.h Btrfs: add btrfs_trim_fs() to handle FITRIM 2011-03-28 05:37:47 -04:00
hash.h
inode-item.c
inode-map.c Btrfs: cleanup some BUG_ON() 2011-03-28 05:37:35 -04:00
inode.c Btrfs: don't always do readahead 2011-05-23 13:03:14 -04:00
ioctl.c Btrfs: kill BTRFS_I(inode)->block_group 2011-05-23 13:03:12 -04:00
ioctl.h Merge branch 'lzo-support' of git://repo.or.cz/linux-btrfs-devel into btrfs-38 2011-01-16 11:25:54 -05:00
Kconfig btrfs: Add lzo compression support 2010-12-22 23:15:47 +08:00
locking.c
locking.h
lzo.c Btrfs: Avoid accessing unmapped kernel address 2011-02-16 15:37:58 -05:00
Makefile btrfs: Add lzo compression support 2010-12-22 23:15:47 +08:00
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 missing break in switch phrase 2011-01-28 16:40:37 -05:00
print-tree.h
ref-cache.c
ref-cache.h
relocation.c Btrfs: don't always do readahead 2011-05-23 13:03:14 -04:00
root-tree.c Btrfs: Fix uninitialized root flags for subvolumes 2011-04-05 01:20:24 -04:00
struct-funcs.c
super.c Btrfs: fix subvolume mount by name problem when default mount subvolume is set 2011-04-11 20:26:50 -04:00
sysfs.c
transaction.c Btrfs: kill BTRFS_I(inode)->block_group 2011-05-23 13:03:12 -04:00
transaction.h Btrfs: kill BTRFS_I(inode)->block_group 2011-05-23 13:03:12 -04:00
tree-defrag.c
tree-log.c Btrfs: fix missing mutex_unlock in btrfs_del_dir_entries_in_log() 2011-04-25 19:43:51 -04:00
tree-log.h
version.h
version.sh
volumes.c Btrfs: do some plugging in the submit_bio threads 2011-04-19 20:12:40 -04:00
volumes.h Btrfs: make btrfs_map_block() return entire free extent for each device of RAID0/1/10/DUP 2011-03-28 05:37:45 -04:00
xattr.c Btrfs: kill BTRFS_I(inode)->block_group 2011-05-23 13:03:12 -04:00
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