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    SubjectRe: [rfc][patch] remove racy sync_page?
    Nick Piggin writes:
    > Nick Piggin wrote:
    > > Linus Torvalds wrote:
    > >
    > >>
    > >> Why do you think the IO layer should get larger requests?
    > >
    > >
    > > For workloads where plugging helps (ie. lots of smaller, contiguous
    > > requests going into the IO layer), should be pretty good these days
    > > due to multiple readahead and writeback.
    >
    > Let me try again.
    >
    > For workloads where plugging helps (ie. lots of smaller, contiguous
    > requests going into the IO layer), the request pattern should be
    > pretty good without plugging these days, due to multiple page
    > readahead and writeback.

    Pageout by VM scanner doesn't benefit from those, and it is still quite
    important in some workloads (e.g., mmap intensive).

    Nikita.
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