btrfs: check return value of btrfs_start_ioctl_transaction() properly
authorTsutomu Itoh <t-itoh@jp.fujitsu.com>
Mon, 24 Jan 2011 00:57:10 +0000 (00:57 +0000)
committerChris Mason <chris.mason@oracle.com>
Fri, 28 Jan 2011 21:40:37 +0000 (16:40 -0500)
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>

No differences found