Re: [PATCH 05/17] writeback: quit throttling when signal pending

From: Neil Brown
Date: Sun Sep 12 2010 - 16:47:16 EST


On Sun, 12 Sep 2010 23:49:50 +0800
Wu Fengguang <fengguang.wu@xxxxxxxxx> wrote:

> This allows quick response to Ctrl-C etc. for impatient users.
>
> Signed-off-by: Wu Fengguang <fengguang.wu@xxxxxxxxx>
> ---
> mm/page-writeback.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> --- linux-next.orig/mm/page-writeback.c 2010-09-09 16:01:14.000000000 +0800
> +++ linux-next/mm/page-writeback.c 2010-09-09 16:02:27.000000000 +0800
> @@ -553,6 +553,9 @@ static void balance_dirty_pages(struct a
> __set_current_state(TASK_INTERRUPTIBLE);
> io_schedule_timeout(pause);
>
> + if (signal_pending(current))
> + break;
> +

Given the patch description, I think you might want "fatal_signal_pending()"
here ???

NeilBrown

> check_exceeded:
> /*
> * The bdi thresh is somehow "soft" limit derived from the
>
>
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