drbd: fix regression 'out of mem, failed to invoke fence-peer helper'
authorLars Ellenberg <lars.ellenberg@linbit.com>
Wed, 9 Jul 2014 19:18:32 +0000 (21:18 +0200)
committerJens Axboe <axboe@fb.com>
Thu, 10 Jul 2014 09:06:03 +0000 (11:06 +0200)
commitbbc1c5e8ad6dfebf9d13b8a4ccdf66c92913eac9
tree5493cdbd6b5912d1c71c5934695d1d382a41c397
parentd45b3279a5a2252cafcd665bbf2db8c9b31ef783
drbd: fix regression 'out of mem, failed to invoke fence-peer helper'

Since linux kernel 3.13, kthread_run() internally uses
wait_for_completion_killable().  We sometimes may use kthread_run()
while we still have a signal pending, which we used to kick our threads
out of potentially blocking network functions, causing kthread_run() to
mistake that as a new fatal signal and fail.

Fix: flush_signals() before kthread_run().

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
drivers/block/drbd/drbd_nl.c