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    SubjectRe: [PATCH 1/5] vmscan: remove all_unreclaimable check from direct reclaim path completely
    Date
    > On Thu, Mar 24, 2011 at 4:28 PM, KOSAKI Motohiro
    > <kosaki.motohiro@jp.fujitsu.com> wrote:
    > >> For example, In 4G desktop system.
    > >> 32M full scanning and fail to reclaim a page.
    > >> It's under 1% coverage.
    > >
    > > ?? I'm sorry. I haven't catch it.
    > > Where 32M come from?
    >
    > (1<<12) * 4K + (1<<11) + 4K + .. (1 << 0) + 4K in shrink_zones.

    (lru-pages>>12) + (lru-pages>>11) + (lru-pages>>10) ... =~ 2 * lru-page

    ?





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