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    SubjectRe: Buffer and Page cache coherent? was: Strange IDE performance change in 2.6.1-rc1 (again)
    Mike Fedyk <mfedyk@matchmail.com> wrote:
    >
    > On Sat, Jan 03, 2004 at 02:40:03PM -0800, Andrew Morton wrote:
    > > No effort was made to optimise buffered blockdev reads because it is not
    > > very important and my main interest was in data coherency and filesystem
    > > metadata consistency.
    >
    > Does that mean that blockdev reads will populate the pagecache in 2.6?

    They have since 2.4.10. The pagecache is the only cacheing entity for file
    (and blockdev) data.

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