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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 /fs/affs/namei.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 'fs/affs/namei.c')
| -rw-r--r-- | fs/affs/namei.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/affs/namei.c b/fs/affs/namei.c index 5aca08c..944a404 100644 --- a/fs/affs/namei.c +++ b/fs/affs/namei.c @@ -240,7 +240,7 @@ affs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd) if (IS_ERR(inode)) return ERR_CAST(inode); } - dentry->d_op = AFFS_SB(sb)->s_flags & SF_INTL ? &affs_intl_dentry_operations : &affs_dentry_operations; + d_set_d_op(dentry, AFFS_SB(sb)->s_flags & SF_INTL ? &affs_intl_dentry_operations : &affs_dentry_operations); d_add(dentry, inode); return NULL; } |
