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
..
Kconfig fs/Kconfig: move sysv out 2009-01-22 13:15:59 +03:00
Makefile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
balloc.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dir.c clean up write_begin usage for directories in pagecache 2010-08-09 16:47:31 -04:00
file.c remove inode_setattr 2010-08-09 16:47:37 -04:00
ialloc.c switch sysv to ->evict_inode() 2010-08-09 16:47:59 -04:00
inode.c fs: icache RCU free inodes 2011-01-07 17:50:26 +11:00
itree.c get rid of block_write_begin_newtrunc 2010-08-09 16:47:33 -04:00
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 [PATCH] mark struct inode_operations const 3 2007-02-12 09:48:46 -08:00
sysv.h clean up write_begin usage for directories in pagecache 2010-08-09 16:47:31 -04:00