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authorEric W. Biederman <ebiederm@xmission.com>2006-03-31 12:31:43 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-31 22:19:00 +0200
commit3e7e241f8c5c87cc3685364feface081c9fa3648 (patch)
tree43ea46cfec4da31a505e93875feeac945bf906ce /include
parent[PATCH] pidhash: Refactor the pid hash table (diff)
downloadlinux-3e7e241f8c5c87cc3685364feface081c9fa3648.tar.xz
linux-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')
-rw-r--r--include/linux/dcache.h1
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 *);