switch posix_acl_create() to umode_t *

so we can pass &inode->i_mode to it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
index 65a735d..5908614 100644
--- a/fs/btrfs/acl.c
+++ b/fs/btrfs/acl.c
@@ -222,19 +222,16 @@
 	}
 
 	if (IS_POSIXACL(dir) && acl) {
-		mode_t mode = inode->i_mode;
-
 		if (S_ISDIR(inode->i_mode)) {
 			ret = btrfs_set_acl(trans, inode, acl,
 					    ACL_TYPE_DEFAULT);
 			if (ret)
 				goto failed;
 		}
-		ret = posix_acl_create(&acl, GFP_NOFS, &mode);
+		ret = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode);
 		if (ret < 0)
 			return ret;
 
-		inode->i_mode = mode;
 		if (ret > 0) {
 			/* we need an acl */
 			ret = btrfs_set_acl(trans, inode, acl, ACL_TYPE_ACCESS);