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    SubjectRe: [PATCH] mm: unify shmem and tiny-shmem

    On Thu, 2008-10-02 at 23:23 +0100, David Howells wrote:
    > Hugh Dickins <> wrote:
    > > That's much nicer than I'd been imagining, thanks Matt: I've no qualms
    > > about the few #ifdefs you're adding to mm/shmem.c, it does seem an
    > > outright improvement that you're bringing them together.
    > It's not an outright improvement. shmem.o is still larger than tiny-shmem.o,
    > albeit not a lot; however, some embedded people really do count the bytes.

    Here the difference comes down to 16 bytes for the "if (size < 0)"
    check/branch, which is a worthwhile check.

    > > This ifndef is the ugliest part of it: and looking into it, guess
    > > what, shmem_get_unmapped_area() hasn't been used since 2.6.20 -
    > > that's right, isn't it, David?
    > Ummm... It seems to be. I think it used to be used by SYSV SHM. Certainly
    > deleting that function causes no link problems.

    I've got a patch queued to drop it, will post shortly.

    Mathematics is the supreme nostalgia of our time.

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      Last update: 2008-10-03 00:49    [W:0.020 / U:11.784 seconds]
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