switch posix_acl_from_mode() to umode_t

... seeing that this is what all callers pass to it anyway.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/posix_acl.c b/fs/posix_acl.c
index 3d943be..4e16e80 100644
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c
@@ -188,7 +188,7 @@
  * Create an ACL representing the file mode permission bits of an inode.
  */
 struct posix_acl *
-posix_acl_from_mode(mode_t mode, gfp_t flags)
+posix_acl_from_mode(umode_t mode, gfp_t flags)
 {
 	struct posix_acl *acl = posix_acl_alloc(3, flags);
 	if (!acl)