From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 14 Dec 2014 07:59:17 +0000 (-0500)
Subject: btrfs: filp_open() returns ERR_PTR() on failure, not NULL...
X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aee8c188e403ed23de00549c1f82112e124c2f87;p=linux

btrfs: filp_open() returns ERR_PTR() on failure, not NULL...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
(cherry picked from commit 98af592f5bf863137ae2872ed03720f02fbc82c3)
---

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 2cb88d26c7f9..b9f2dd81c21a 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1485,7 +1485,7 @@ static void update_dev_time(char *path_name)
 	struct file *filp;
 
 	filp = filp_open(path_name, O_RDWR, 0);
-	if (!filp)
+	if (IS_ERR(filp))
 		return;
 	file_update_time(filp);
 	filp_close(filp, NULL);