From: yanhai zhu <zhu.yanhai@gmail.com>
Date: Wed, 12 Nov 2008 19:38:54 +0000 (-0500)
Subject: Btrfs: Add a missing return pointer check
X-Git-Tag: v2.6.29-rc1~27^2~9^2~55^2~13
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=7cbd8a839118eede2393f0926b8e15027162bcd6;p=linux-2.6-block.git

Btrfs: Add a missing return pointer check

Add a missing kzalloc() return pointer check in add_missing_dev().

Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index d6f1996de629..ecf0633ab8cc 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2755,6 +2755,8 @@ static struct btrfs_device *add_missing_dev(struct btrfs_root *root,
 	struct btrfs_fs_devices *fs_devices = root->fs_info->fs_devices;
 
 	device = kzalloc(sizeof(*device), GFP_NOFS);
+	if (!device)
+		return NULL;
 	list_add(&device->dev_list,
 		 &fs_devices->devices);
 	device->barriers = 1;