Re: [PATCH 2/2] xfs: back off from kmem_zalloc_greedy if the task is killed

[Brian Foster]

On Thu, Mar 02, 2017 at 04:45:41PM +0100, Michal Hocko wrote:
> From: Michal Hocko <mhocko@xxxxxxxx>
> 
> 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@xxxxxxxxxx>
> Signed-off-by: Michal Hocko <mhocko@xxxxxxxx>
> ---

Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx>

>  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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