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e4100d987b
linux/fs/btrfs
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Miao Xie e4100d987b Btrfs: improve the performance of the csums lookup 
It is very likely that there are several blocks in bio, it is very
inefficient if we get their csums one by one. This patch improves
this problem by getting the csums in batch.

According to the result of the following test, the execute time of
__btrfs_lookup_bio_sums() is down by ~28%(300us -> 217us).

 # dd if=<mnt>/file of=/dev/null bs=1M count=1024

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
2013-05-06 15:54:35 -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
async-thread.h
backref.c Btrfs: fix double free in the iterate_extent_inodes() 2013-05-06 15:54:31 -04:00
backref.h Btrfs: move fs/btrfs/ioctl.h to include/uapi/linux/btrfs.h 2013-02-20 09:37:28 -05:00
btrfs_inode.h Btrfs: serialize unlocked dio reads with truncate 2013-02-20 12:59:47 -05:00
check-integrity.c btrfs: define BTRFS_MAGIC as a u64 value 2013-02-20 13:00:01 -05:00
check-integrity.h
compat.h
compression.c Btrfs: cleanup unused arguments of btrfs_csum_data 2013-05-06 15:54:14 -04:00
compression.h
ctree.c Btrfs: fix bad extent logging 2013-05-06 15:54:34 -04:00
ctree.h Btrfs: fix bad extent logging 2013-05-06 15:54:34 -04:00
delayed-inode.c Btrfs: improve the delayed inode throttling 2013-03-07 07:52:40 -05:00
delayed-inode.h Btrfs: improve the delayed inode throttling 2013-03-07 07:52:40 -05:00
delayed-ref.c Btrfs: compare relevant parts of delayed tree refs 2013-05-06 15:54:29 -04:00
delayed-ref.h Merge branch 'raid56-experimental' into for-linus-3.9 2013-02-20 14:06:05 -05:00
dev-replace.c Btrfs: check the return value of btrfs_start_delalloc_inodes() 2013-02-20 09:37:21 -05:00
dev-replace.h Btrfs: add new sources for device replace code 2012-12-12 17:15:41 -05:00
dir-item.c Btrfs: fix hash overflow handling 2012-12-17 14:48:21 -05:00
disk-io.c Btrfs: fix bad extent logging 2013-05-06 15:54:34 -04:00
disk-io.h Btrfs: cleanup unused arguments of btrfs_csum_data 2013-05-06 15:54:14 -04:00
export.c fs: encode_fh: return FILEID_INVALID if invalid fid_type 2013-02-26 02:46:10 -05:00
export.h
extent_io.c Btrfs: improve the performance of the csums lookup 2013-05-06 15:54:35 -04:00
extent_io.h Btrfs: improve the performance of the csums lookup 2013-05-06 15:54:35 -04:00
extent_map.c Btrfs: fix bad extent logging 2013-05-06 15:54:34 -04:00
extent_map.h Btrfs: fix bad extent logging 2013-05-06 15:54:34 -04:00
extent-tree.c Btrfs: don't wait on ordered extents if we have a trans open 2013-05-06 15:54:32 -04:00
file-item.c Btrfs: improve the performance of the csums lookup 2013-05-06 15:54:35 -04:00
file.c Btrfs: fix bad extent logging 2013-05-06 15:54:34 -04:00
free-space-cache.c Btrfs: Include the device in most error printk()s 2013-05-06 15:54:23 -04:00
free-space-cache.h Btrfs: add some free space cache tests 2013-05-06 15:52:54 -04:00
hash.h
inode-item.c
inode-map.c
inode-map.h
inode.c Btrfs: fix bad extent logging 2013-05-06 15:54:34 -04:00
ioctl.c btrfs: make subvol creation/deletion killable in the early stages 2013-05-06 15:54:26 -04:00
Kconfig btrfs: update kconfig title 2013-05-06 15:54:22 -04:00
locking.c Btrfs: save us a read_lock 2013-02-20 09:37:17 -05:00
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
ordered-data.c Btrfs: improve the performance of the csums lookup 2013-05-06 15:54:35 -04:00
ordered-data.h Btrfs: improve the performance of the csums lookup 2013-05-06 15:54:35 -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
qgroup.c Btrfs: fix a warning when disabling quota 2013-05-06 15:54:28 -04:00
raid56.c btrfs/raid56: Add missing #include <linux/vmalloc.h> 2013-03-03 06:53:41 -05:00
raid56.h Btrfs: RAID5 and RAID6 2013-02-01 14:24:23 -05:00
rcu-string.h
reada.c Btrfs: introduce GET_READ_MIRRORS functionality for btrfs_map_block() 2012-12-12 17:15:43 -05:00
relocation.c Btrfs: fix bad extent logging 2013-05-06 15:54:34 -04:00
root-tree.c Btrfs: rename root_times_lock to root_item_lock 2012-12-16 20:46:21 -05:00
scrub.c Btrfs: add a incompatible format change for smaller metadata extent refs 2013-05-06 15:54:18 -04:00
send.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2013-03-29 11:13:25 -07:00
send.h btrfs: add "no file data" flag to btrfs send ioctl 2013-02-20 12:59:39 -05:00
struct-funcs.c
super.c Btrfs: fix infinite loop when we abort on mount 2013-05-06 15:54:29 -04:00
sysfs.c btrfs: fixup/remove module.h usage as required 2013-03-01 15:01:01 -05:00
transaction.c Btrfs: fix infinite loop when we abort on mount 2013-05-06 15:54:29 -04:00
transaction.h btrfs: clean snapshots one by one 2013-05-06 15:54:21 -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: fix bad extent logging 2013-05-06 15:54:34 -04:00
tree-log.h
ulist.c btrfs: fixup/remove module.h usage as required 2013-03-01 15:01:01 -05:00
ulist.h
version.h
volumes.c Btrfs: fix bad extent logging 2013-05-06 15:54:34 -04:00
volumes.h Merge branch 'raid56-experimental' into for-linus-3.9 2013-02-20 14:06:05 -05:00
xattr.c Btrfs: only log the inode item if we can get away with it 2012-12-16 20:46:21 -05:00
xattr.h
zlib.c