[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>

diff --git a/kernel/power/process.c b/kernel/power/process.c
index 3bd0d26..f7da5bf 100644 (file)
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -38,7 +38,6 @@ void refrigerator(void)
           processes around? */
        long save;
        save = current->state;
-       current->state = TASK_UNINTERRUPTIBLE;
        pr_debug("%s entered refrigerator\n", current->comm);
        printk("=");
 
@@ -47,8 +46,10 @@ void refrigerator(void)
        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;
 }