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| author | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:49:55 +1100 |
|---|---|---|
| committer | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:50:28 +1100 |
| commit | fb045adb99d9b7c562dc7fef834857f78249daa1 (patch) | |
| tree | 1fd6a4024fffeec568abe100d730589bfdb81c38 /arch/ia64/kernel/perfmon.c | |
| parent | 5f57cbcc02cf18f6b22ef4066bb10afeb8f930ff (diff) | |
| download | op-kernel-dev-fb045adb99d9b7c562dc7fef834857f78249daa1.zip op-kernel-dev-fb045adb99d9b7c562dc7fef834857f78249daa1.tar.gz | |
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>
Diffstat (limited to 'arch/ia64/kernel/perfmon.c')
| -rw-r--r-- | arch/ia64/kernel/perfmon.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index d39d8a5..5a24f40 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -2233,7 +2233,7 @@ pfm_alloc_file(pfm_context_t *ctx) } path.mnt = mntget(pfmfs_mnt); - path.dentry->d_op = &pfmfs_dentry_operations; + d_set_d_op(path.dentry, &pfmfs_dentry_operations); d_add(path.dentry, inode); file = alloc_file(&path, FMODE_READ, &pfm_file_ops); |
