commit 2a23b5d1e119fd10e25b8e93464c8d549f5a5c5d
author Pavel Machek <pavel@ucw.cz> Sat Sep 03 15:56:53 2005 -0700
committer Linus Torvalds <torvalds@evo.osdl.org> Mon Sep 05 00:06:14 2005 -0700
tree 60eede3a1a0a92837c0207de2750880d9a309db1
parent 52fdd08903a1d1162e184114837e232640191627

[PATCH] remove busywait in refrigerator

This should make refrigerator sleep properly, not busywait after the first
schedule() returns.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/power/process.c

diff --git a/kernel/power/process.c b/kernel/power/process.c
index 3bd0d26..f7da5bf 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -38,7 +38,6 @@
 	   processes around? */
 	long save;
 	save = current->state;
-	current->state = TASK_UNINTERRUPTIBLE;
 	pr_debug("%s entered refrigerator\n", current->comm);
 	printk("=");
 
@@ -47,8 +46,10 @@
 	recalc_sigpending(); /* We sent fake signal, clean it up */
 	spin_unlock_irq(&current->sighand->siglock);
 
-	while (frozen(current))
+	while (frozen(current)) {
+		current->state = TASK_UNINTERRUPTIBLE;
 		schedule();
+	}
 	pr_debug("%s left refrigerator\n", current->comm);
 	current->state = save;
 }