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	Btrfs: call the ordered free operation without any locks held	2012-07-25 16:15:07 -04:00
async-thread.h	btrfs: return void in functions without error conditions	2012-03-22 01:45:34 +01:00
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	Btrfs: add optional integrity check code	2011-12-21 19:14:09 +01:00
compat.h
compression.c	Btrfs: cleanup unused arguments of btrfs_csum_data	2013-05-06 15:54:14 -04:00
compression.h	btrfs: return void in functions without error conditions	2012-03-22 01:45:34 +01:00
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-tree.c	Btrfs: don't wait on ordered extents if we have a trans open	2013-05-06 15:54:32 -04:00
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
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	btrfs: extended inode refs	2012-10-09 09:14:45 -04:00
inode-item.c	btrfs: extended inode refs	2012-10-09 09:14:45 -04:00
inode-map.c	Btrfs: improve the noflush reservation	2012-12-11 13:31:31 -05:00
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	btrfs: remove the second argument of k[un]map_atomic()	2012-03-20 21:48:21 +08:00
Makefile	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
math.h	Btrfs: cleanup duplicated division functions	2012-12-11 13:31:30 -05:00
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	btrfs: replace many BUG_ONs with proper error handling	2012-03-22 11:52:54 +01:00
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	Btrfs: use rcu to protect device->name	2012-06-14 21:29:16 -04:00
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	Btrfs: rewrite BTRFS_SETGET_FUNCS	2012-07-23 16:28:06 -04:00
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	btrfs: return void in functions without error conditions	2012-03-22 01:45:34 +01:00
ulist.c	btrfs: fixup/remove module.h usage as required	2013-03-01 15:01:01 -05:00
ulist.h	Btrfs: make aux field of ulist 64 bit	2012-10-01 15:18:53 -04:00
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	btrfs: fix message printing	2012-10-09 09:19:57 -04:00