switch touch_atime to struct path

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/inode.c b/fs/inode.c
index 92de04b..8b61281 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1499,9 +1499,10 @@
  *	This function automatically handles read only file systems and media,
  *	as well as the "noatime" flag and inode specific "noatime" markers.
  */
-void touch_atime(struct vfsmount *mnt, struct dentry *dentry)
+void touch_atime(struct path *path)
 {
-	struct inode *inode = dentry->d_inode;
+	struct vfsmount *mnt = path->mnt;
+	struct inode *inode = path->dentry->d_inode;
 	struct timespec now;
 
 	if (inode->i_flags & S_NOATIME)