linux/fs/sysv
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
..
balloc.c
dir.c
file.c
ialloc.c
inode.c fs: icache RCU free inodes 2011-01-07 17:50:26 +11:00
itree.c
Kconfig
Makefile
namei.c fs: dcache reduce branches in lookup path 2011-01-07 17:50:28 +11:00
super.c fs: dcache reduce branches in lookup path 2011-01-07 17:50:28 +11:00
symlink.c
sysv.h