linux/fs/sysfs
Nick Piggin fb045adb99 fs: dcache reduce branches in lookup path
Reduce some branches and memory accesses in dcache lookup by adding dentry
flags to indicate common d_ops are set, rather than having to check them.
This saves a pointer memory access (dentry->d_op) in common path lookup
situations, and saves another pointer load and branch in cases where we
have d_op but not the particular operation.

Patched with:

git grep -E '[.>]([[:space:]])*d_op([[:space:]])*=' | xargs sed -e 's/\([^\t ]*\)->d_op = \(.*\);/d_set_d_op(\1, \2);/' -e 's/\([^\t ]*\)\.d_op = \(.*\);/d_set_d_op(\&\1, \2);/' -i

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
2011-01-07 17:50:28 +11:00
..
bin.c sysfs: only access bin file vm_ops with the active lock 2010-10-22 10:16:43 -07:00
dir.c fs: dcache reduce branches in lookup path 2011-01-07 17:50:28 +11:00
file.c sysfs: checking for NULL instead of ERR_PTR 2010-09-03 17:26:28 -07:00
group.c sysfs: Add sysfs_merge_group() and sysfs_unmerge_group() 2010-10-17 01:57:44 +02:00
inode.c switch sysfs to ->evict_inode() 2010-08-09 16:47:53 -04:00
Kconfig fs/Kconfig: move sysfs out 2009-01-22 13:15:56 +03:00
Makefile
mount.c convert sysfs 2010-10-29 04:17:08 -04:00
symlink.c sysfs: allow creating symlinks from untagged to tagged directories 2010-07-26 12:02:41 -07:00
sysfs.h switch sysfs to ->evict_inode() 2010-08-09 16:47:53 -04:00