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| author |   Eric W. Biederman <ebiederm@xmission.com> | 2006-03-31 02:31:43 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-31 12:19:00 -0800 |
| commit | 3e7e241f8c5c87cc3685364feface081c9fa3648 (patch) | |
| tree | 43ea46cfec4da31a505e93875feeac945bf906ce /include/linux/dcache.h | |
| parent | [PATCH] pidhash: Refactor the pid hash table (diff) | |
| download | linux-dev-3e7e241f8c5c87cc3685364feface081c9fa3648.tar.xz linux-dev-3e7e241f8c5c87cc3685364feface081c9fa3648.zip | |
[PATCH] dcache: Add helper d_hash_and_lookup
It is very common to hash a dentry and then to call lookup. If we take fs
specific hash functions into account the full hash logic can get ugly.
Further full_name_hash as an inline function is almost 100 bytes on x86 so
having a non-inline choice in some cases can measurably decrease code size.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/dcache.h')
| -rw-r--r-- | include/linux/dcache.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/dcache.h b/include/linux/dcache.h index d10bd30c337e..836325ee0931 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -275,6 +275,7 @@ extern void d_move(struct dentry *, struct dentry *); /* appendix may either be NULL or be used for transname suffixes */ extern struct dentry * d_lookup(struct dentry *, struct qstr *); extern struct dentry * __d_lookup(struct dentry *, struct qstr *); +extern struct dentry * d_hash_and_lookup(struct dentry *, struct qstr *); /* validate "insecure" dentry pointer */ extern int d_validate(struct dentry *, struct dentry *); |