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SubjectRe: [RFC][PATCH -mm] Freezer: Do not allow freezing processes to clear TIF_SIGPENDING
Date
Hi.

On Friday 19 October 2007 08:22:35 Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rjw@sisk.pl>
>
> Do not allow processes to clear their TIF_SIGPENDING if TIF_FREEZE is set,
> to prevent them from racing with the freezer (like mysqld does, for
example).
>
> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

Acked-by: Nigel Cunningham <nigel@suspend2.net>

> ---
> kernel/signal.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> Index: linux-2.6.23-mm1/kernel/signal.c
> ===================================================================
> --- linux-2.6.23-mm1.orig/kernel/signal.c
> +++ linux-2.6.23-mm1/kernel/signal.c
> @@ -124,7 +124,7 @@ void recalc_sigpending_and_wake(struct t
>
> void recalc_sigpending(void)
> {
> - if (!recalc_sigpending_tsk(current))
> + if (!recalc_sigpending_tsk(current) && !freezing(current))
> clear_thread_flag(TIF_SIGPENDING);
>
> }
>



--
Nigel, Michelle, Alisdair and ____________ Cunningham
5 Mitchell Street
Cobden 3266
Victoria, Australia
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