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SubjectRe: [PATCH 2/2] xfs: back off from kmem_zalloc_greedy if the task is killed
On Thu, Mar 02, 2017 at 04:45:41PM +0100, Michal Hocko wrote:
> From: Michal Hocko <mhocko@suse.com>
>
> It doesn't really make much sense to retry vmalloc request if the
> current task is killed. We should rather bail out as soon as possible
> and let it RIP as soon as possible. The current implementation of
> vmalloc will fail anyway.
>
> Suggested-by: Brian Foster <bfoster@redhat.com>
> Signed-off-by: Michal Hocko <mhocko@suse.com>
> ---

Reviewed-by: Brian Foster <bfoster@redhat.com>

> fs/xfs/kmem.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c
> index ee95f5c6db45..01c52567a4ff 100644
> --- a/fs/xfs/kmem.c
> +++ b/fs/xfs/kmem.c
> @@ -34,7 +34,7 @@ kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize)
> size_t kmsize = maxsize;
>
> while (!(ptr = vzalloc(kmsize))) {
> - if (kmsize == minsize)
> + if (kmsize == minsize || fatal_signal_pending(current))
> break;
> if ((kmsize >>= 1) <= minsize)
> kmsize = minsize;
> --
> 2.11.0
>
> --
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