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    SubjectRe: [PATCH]: Free pages from local pcp lists under tight memory conditions
    On Tue, 22 Nov 2005, Andrew Morton wrote:

    > > [PATCH]: This patch free pages (pcp->batch from each list at a time) from
    > > local pcp lists when a higher order allocation request is not able to
    > > get serviced from global free_list.
    > >
    > > This should help fix some of the earlier failures seen with order 1 allocations.
    > >
    > > I will send separate patches for:
    > >
    > > 1- Reducing the remote cpus pcp

    That is already partially done by drain_remote_pages(). However, that
    draining is specific to this processors remote pagesets in remote
    zones.

    > This significantly duplicates the existing drain_local_pages().

    We need to extract __drain_pcp from all these functions and clearly
    document how they differ. Seth probably needs to call __drain_pages for
    each processor.
    -
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