From: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Date: Mon, 24 Jan 2011 00:57:10 +0000 (+0000)
Subject: btrfs: check return value of btrfs_start_ioctl_transaction() properly
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=abd30bb0af9d4671506502278e8631bed9e3c35c;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

btrfs: check return value of btrfs_start_ioctl_transaction() properly

btrfs_start_ioctl_transaction() returns ERR_PTR(), not NULL.
So, it is necessary to use IS_ERR() to check the return value.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 04b4fb9144a9..12dabe28cf54 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2085,7 +2085,7 @@ static long btrfs_ioctl_trans_start(struct file *file)
 
 	ret = -ENOMEM;
 	trans = btrfs_start_ioctl_transaction(root, 0);
-	if (!trans)
+	if (IS_ERR(trans))
 		goto out_drop;
 
 	file->private_data = trans;