* [PATCH 2/3] wait_task_inactive: fix the !CONFIG_SMP version
@ 2008-07-30 17:09 Oleg Nesterov
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From: Oleg Nesterov @ 2008-07-30 17:09 UTC (permalink / raw)
To: Andrew Morton; +Cc: Ingo Molnar, Linus Torvalds, Roland McGrath, linux-kernel
The semantics of wait_task_inactive() was changed, update the !SMP
version accordingly.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
--- 27/include/linux/sched.h~2_WTI_DUMMY 2008-07-30 13:12:48.000000000 +0400
+++ 27/include/linux/sched.h 2008-07-30 20:28:31.000000000 +0400
@@ -1880,7 +1880,9 @@ extern unsigned long wait_task_inactive(
static inline unsigned long wait_task_inactive(struct task_struct *p,
long match_state)
{
- return 1;
+ if (match_state && unlikely(p->state != match_state))
+ return 0;
+ return p->nvcsw | LONG_MIN; /* sets MSB */
}
#endif
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2008-07-30 17:09 [PATCH 2/3] wait_task_inactive: fix the !CONFIG_SMP version Oleg Nesterov
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