From 50a07b75b39739cd61e867641c68eca441dcca0c Mon Sep 17 00:00:00 2001
From: Liu Bo <bo.li.liu@oracle.com>
Date: Wed, 28 Nov 2012 10:43:11 +0000
Subject: [PATCH] Btrfs: skip adding an acl attribute if we don't have to

If the acl can be exactly represented in the traditional file
mode permission bits, we don't set another acl attribute.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
---
 fs/btrfs/acl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
index 0c16e3dbfd568..e15d2b0d8d3b2 100644
--- a/fs/btrfs/acl.c
+++ b/fs/btrfs/acl.c
@@ -121,6 +121,8 @@ static int btrfs_set_acl(struct btrfs_trans_handle *trans,
 			ret = posix_acl_equiv_mode(acl, &inode->i_mode);
 			if (ret < 0)
 				return ret;
+			if (ret == 0)
+				acl = NULL;
 		}
 		ret = 0;
 		break;
-- 
2.39.5