On Tue, May 27, 2014 at 09:55:49AM -0700, Eric Dumazet wrote:
> From: Eric Dumazet <[email protected]>
> 
> zswap_dstmem is a percpu block of memory, which should
> be allocated using kmalloc_node(), to get better NUMA
> locality.
> 
> Without it, all the blocks are allocated from a single node.
> 
> Signed-off-by: Eric Dumazet <[email protected]>

Acked-by: Seth Jennings <[email protected]>

> ---
>  mm/zswap.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/zswap.c b/mm/zswap.c
> index aeaef0fb5624..008388fe7b0f 100644
> --- a/mm/zswap.c
> +++ b/mm/zswap.c
> @@ -347,7 +347,7 @@ static int __zswap_cpu_notifier(unsigned long action, 
> unsigned long cpu)
>                       return NOTIFY_BAD;
>               }
>               *per_cpu_ptr(zswap_comp_pcpu_tfms, cpu) = tfm;
> -             dst = kmalloc(PAGE_SIZE * 2, GFP_KERNEL);
> +             dst = kmalloc_node(PAGE_SIZE * 2, GFP_KERNEL, cpu_to_node(cpu));
>               if (!dst) {
>                       pr_err("can't allocate compressor buffer\n");
>                       crypto_free_comp(tfm);
> 
> 
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