d_path: Make d_path() use a struct path

d_path() is used on a <dentry,vfsmount> pair.  Lets use a struct path to
reflect this.

[akpm@linux-foundation.org: fix build in mm/memory.c]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Acked-by: Bryan Wu <bryan.wu@analog.com>
Acked-by: Christoph Hellwig <hch@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Neil Brown <neilb@suse.de>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 7 deletions

diff --git a/fs/dcache.c b/fs/dcache.c
index 170efbcb1a9b..7b4b080219f8 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1845,8 +1845,7 @@ Elong:
 
 /**
  * d_path - return the path of a dentry
- * @dentry: dentry to report
- * @vfsmnt: vfsmnt to which the dentry belongs
+ * @path: path to report
  * @buf: buffer to return value in
  * @buflen: buffer length
  *
@@ -1857,8 +1856,7 @@ Elong:
  *
  * "buflen" should be positive. Caller holds the dcache_lock.
  */
-char *d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
-             char *buf, int buflen)
+char *d_path(struct path *path, char *buf, int buflen)
 {
         char *res;
         struct path root;
@@ -1870,15 +1868,15 @@ char *d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
          * user wants to identify the object in /proc/pid/fd/.  The little hack
          * below allows us to generate a name for these objects on demand:
          */
-        if (dentry->d_op && dentry->d_op->d_dname)
-                return dentry->d_op->d_dname(dentry, buf, buflen);
+        if (path->dentry->d_op && path->dentry->d_op->d_dname)
+                return path->dentry->d_op->d_dname(path->dentry, buf, buflen);
 
         read_lock(&current->fs->lock);
         root = current->fs->root;
         path_get(&current->fs->root);
         read_unlock(&current->fs->lock);
         spin_lock(&dcache_lock);
-        res = __d_path(dentry, vfsmnt, &root, buf, buflen);
+        res = __d_path(path->dentry, path->mnt, &root, buf, buflen);
         spin_unlock(&dcache_lock);
         path_put(&root);
         return res;