From: NeilBrown Date: Tue, 15 Nov 2005 08:09:12 +0000 (-0800) Subject: [PATCH] md: make md threads interruptible again X-Git-Tag: v2.6.15-rc2~88 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=93588e2284b6be1873cc0bb7fbf0947bdbf72830;p=linux-2.6 [PATCH] md: make md threads interruptible again Despite the fact that md threads don't need to be signalled, and won't respond to signals anyway, we need to have an 'interruptible' wait, else they stay in 'D' state and add to the load average. (akpm: the signal_pending() test is unneeded - we'll fix that up in the next round. For now, leave it there because that's how the code used to be). Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/md/md.c b/drivers/md/md.c index a9f032e341..f3fed662f3 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -3437,10 +3437,19 @@ static int md_thread(void * arg) allow_signal(SIGKILL); while (!kthread_should_stop()) { - wait_event_timeout(thread->wqueue, - test_bit(THREAD_WAKEUP, &thread->flags) - || kthread_should_stop(), - thread->timeout); + /* 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) + || kthread_should_stop(), + thread->timeout); try_to_freeze(); clear_bit(THREAD_WAKEUP, &thread->flags);