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    SubjectRe: [PATCHv1, RFC 00/33] ext4: support of huge pages
    On Tue, Jul 26, 2016 at 01:29:38PM -0400, Theodore Ts'o wrote:
    > On Tue, Jul 26, 2016 at 03:35:02AM +0300, Kirill A. Shutemov wrote:
    > > Here's the first version of my patchset which intended to bring huge pages
    > > to ext4. It's not yet ready for applying or serious use, but good enough
    > > to show the approach.
    >
    > Thanks. The major issues I noticed when doing a quick scan of the
    > patches you've already mentioned here. I'll try to take a closer look
    > in the next week or so when I have time.

    Thanks.

    > One random question --- in the huge=always approach, how much
    > additional work would be needed to support file systems with a 64k
    > block size on a system with 4k pages?

    I think it's totally different story.

    Here I have block size smaller than page size and it's not new to the
    filesystem -- similar to 1k block size with 4k page size. So I was able to
    re-use most of infrastructure to handle the situation.

    Block size bigger than page size is backward task. I don't think I know
    enough to understand how hard it would be. I guess not easy. :)

    --
    Kirill A. Shutemov

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