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Subject: [PATCH] kupdated signal handling
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reply-To: benh@kernel.crashing.org
To: Marcelo Tosatti <marcelo.tosatti@cyclades.com.br>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>,
       Andrea Arcangeli <andrea@suse.de>
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Message-Id: <1065551422.31281.32.camel@gaston>
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Date: Tue, 07 Oct 2003 20:33:29 +0200
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Here's the fix to the problem we have been discussing...

===== fs/buffer.c 1.80 vs edited =====
--- 1.80/fs/buffer.c	Sat Sep 13 20:09:44 2003
+++ edited/fs/buffer.c	Wed Oct  1 11:27:07 2003
@@ -3068,13 +3068,13 @@
 		remove_wait_queue(&kupdate_wait, &wait);
 		/* check for sigstop */
 		if (signal_pending(tsk)) {
-			int stopped = 0;
+			int sig, stopped = 0;
+			struct siginfo info;
+
 			spin_lock_irq(&tsk->sigmask_lock);
-			if (sigismember(&tsk->pending.signal, SIGSTOP)) {
-				sigdelset(&tsk->pending.signal, SIGSTOP);
+			sig = dequeue_signal(&current->blocked, &info);
+			if (sig == SIGSTOP)
 				stopped = 1;
-			}
-			recalc_sigpending(tsk);
 			spin_unlock_irq(&tsk->sigmask_lock);
 			if (stopped) {
 				tsk->state = TASK_STOPPED;