Btrfs: check return value for kthread_run() correctly
authorQinghuang Feng <qhfeng.kernel@gmail.com>
Wed, 21 Jan 2009 15:49:16 +0000 (10:49 -0500)
committerChris Mason <chris.mason@oracle.com>
Wed, 21 Jan 2009 15:49:16 +0000 (10:49 -0500)
kthread_run() returns the kthread or ERR_PTR(-ENOMEM), not NULL.

Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

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