[Devel] [PATCH] md: Remove broken SIGKILL support

[Eric W. Biederman]

From: Eric W. Biederman <ebiederm at xmission.com>

Currently md_thread calls allow_signal so it can receive a
SIGKILL but then does nothing with it except flush the
sigkill so that it not can use an interruptible sleep.

This whole dance is silly so remove the unnecessary
and broken signal handling logic.

Cc: Neil Brown <neilb at suse.de>
Signed-off-by: Eric W. Biederman <ebiederm at xmission.com>
---
 drivers/md/md.c |    6 ------
 1 files changed, 0 insertions(+), 6 deletions(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 1299c23..dfd0cb9 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4542,17 +4542,11 @@ static int md_thread(void * arg)
 	 */
 
 	current->flags |= PF_NOFREEZE;
-	allow_signal(SIGKILL);
 	while (!kthread_should_stop()) {
 
 		/* We need to wait INTERRUPTIBLE so that
 		 * we don't add to the load-average.
-		 * That means we need to be sure no signals are
-		 * pending
 		 */
-		if (signal_pending(current))
-			flush_signals(current);
-
 		wait_event_interruptible_timeout
 			(thread->wqueue,
 			 test_bit(THREAD_WAKEUP, &thread->flags)
-- 
1.5.0.g53756

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