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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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