From: Jan Engelhardt <jengelh@medozas.de>

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/dcache.c            |    2 +-
 include/linux/dcache.h |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff -puN fs/dcache.c~fs-make-struct-file-arg-to-d_path-const fs/dcache.c
--- a/fs/dcache.c~fs-make-struct-file-arg-to-d_path-const
+++ a/fs/dcache.c
@@ -1948,7 +1948,7 @@ Elong:
  *
  * "buflen" should be positive. Caller holds the dcache_lock.
  */
-char *d_path(struct path *path, char *buf, int buflen)
+char *d_path(const struct path *path, char *buf, int buflen)
 {
 	char *res;
 	struct path root;
diff -puN include/linux/dcache.h~fs-make-struct-file-arg-to-d_path-const include/linux/dcache.h
--- a/include/linux/dcache.h~fs-make-struct-file-arg-to-d_path-const
+++ a/include/linux/dcache.h
@@ -302,7 +302,7 @@ extern int d_validate(struct dentry *, s
 extern char *dynamic_dname(struct dentry *, char *, int, const char *, ...);
 
 extern char *__d_path(const struct path *path, struct path *root, char *, int);
-extern char *d_path(struct path *, char *, int);
+extern char *d_path(const struct path *, char *, int);
 extern char *dentry_path(struct dentry *, char *, int);
 
 /* Allocation counts.. */
_