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SubjectRe: [PATCH 12/12] vmscan: Do not writeback pages in direct reclaim
On 06/14/2010 07:17 AM, Mel Gorman wrote:

> diff --git a/mm/vmscan.c b/mm/vmscan.c
> index 4856a2a..574e816 100644
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -372,6 +372,12 @@ int write_reclaim_page(struct page *page, struct address_space *mapping,
> return PAGE_SUCCESS;
> }
>
> +/* kswapd and memcg can writeback as they are unlikely to overflow stack */
> +static inline bool reclaim_can_writeback(struct scan_control *sc)
> +{
> + return current_is_kswapd() || sc->mem_cgroup != NULL;
> +}
> +

I'm not entirely convinced on this bit, but am willing to
be convinced by the data.

--
All rights reversed


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