diff --git a/[refs] b/[refs]
index 37d586c366b2..1cc26b2f03e8 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a713ca2ab9d14dc5c86634bc445ce1f66552c169
+refs/heads/master: da2d8455ed7eb22d7642ecee43dc463ac42a1256
diff --git a/trunk/fs/dcache.c b/trunk/fs/dcache.c
index 93d9f4e1a8ed..0e4b5fa6c9f9 100644
--- a/trunk/fs/dcache.c
+++ b/trunk/fs/dcache.c
@@ -1889,7 +1889,7 @@ struct dentry *__d_lookup_rcu(const struct dentry *parent,
  * dentry is returned. The caller must use dput to free the entry when it has
  * finished using it. %NULL is returned if the dentry does not exist.
  */
-struct dentry *d_lookup(struct dentry *parent, struct qstr *name)
+struct dentry *d_lookup(const struct dentry *parent, const struct qstr *name)
 {
 	struct dentry *dentry;
 	unsigned seq;
diff --git a/trunk/include/linux/dcache.h b/trunk/include/linux/dcache.h
index 969086c03301..03d169288423 100644
--- a/trunk/include/linux/dcache.h
+++ b/trunk/include/linux/dcache.h
@@ -293,7 +293,7 @@ extern void d_move(struct dentry *, struct dentry *);
 extern struct dentry *d_ancestor(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(const struct dentry *, const struct qstr *);
 extern struct dentry *d_hash_and_lookup(struct dentry *, struct qstr *);
 extern struct dentry *__d_lookup(const struct dentry *, const struct qstr *);
 extern struct dentry *__d_lookup_rcu(const struct dentry *parent,