linux-kernel - [PATCH 3/3] signal: use current->state helpers

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Date:	Wed, 14 Jan 2015 22:59:14 -0800
From:	Davidlohr Bueso <dave@...olabs.net>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, Davidlohr Bueso <dave@...olabs.net>,
	Oleg Nesterov <oleg@...hat.com>,
	Davidlohr Bueso <dbueso@...e.de>
Subject: [PATCH 3/3] signal: use current->state helpers

Call __set_current_state() instead of assigning the new state directly.
These interfaces also aid CONFIG_DEBUG_ATOMIC_SLEEP environments, keeping
track of who changed the state.

Signed-off-by: Davidlohr Bueso <dbueso@...e.de>
Cc: Oleg Nesterov <oleg@...hat.com>
---
 kernel/signal.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/signal.c b/kernel/signal.c
index 33a5275..a390499 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -3550,7 +3550,7 @@ SYSCALL_DEFINE2(signal, int, sig, __sighandler_t, handler)
 SYSCALL_DEFINE0(pause)
 {
 	while (!signal_pending(current)) {
-		current->state = TASK_INTERRUPTIBLE;
+		__set_current_state(TASK_INTERRUPTIBLE);
 		schedule();
 	}
 	return -ERESTARTNOHAND;
@@ -3563,7 +3563,7 @@ int sigsuspend(sigset_t *set)
 	current->saved_sigmask = current->blocked;
 	set_current_blocked(set);
 
-	current->state = TASK_INTERRUPTIBLE;
+	__set_current_state(TASK_INTERRUPTIBLE);
 	schedule();
 	set_restore_sigmask();
 	return -ERESTARTNOHAND;
-- 
2.1.2

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