kernel_optimize_test/fs/hostfs
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
..
hostfs_kern.c fs: dcache reduce branches in lookup path 2011-01-07 17:50:28 +11:00
hostfs_user.c hostfs: code cleanups 2010-10-26 16:52:12 -07:00
hostfs.h hostfs: fix UML crash: remove f_spare from hostfs 2010-10-26 16:52:04 -07:00
Makefile