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    SubjectRe: [PATCH 07/12] use a dynamic pool of sk_buffs to keep up with fast targets
    On Mon, Jul 02, 2007 at 09:40:36PM -0700, David Miller wrote:
    > From: Andrew Morton <akpm@linux-foundation.org>
    > Date: Mon, 2 Jul 2007 21:36:36 -0700
    >
    > > My initial thought is that if there is a legitimate need for this
    > > new capability then it should be made available to other parts of
    > > the kernel rather than being private to the AEO driver.
    >
    > Absolutely.
    >
    > We even used to have something like this on a per-cpu basis but using
    > generic SLAB is so much better for caching and NUMA that we got rid of
    > that.
    >
    > Every sk_buff private "quicklist" pool implementation you
    > see should essentially be NAK'd from the get go, it's
    > meaningless and if it's really needed one should investigate
    > why SKB allocations become such a problem instead of papering
    > over the issue. :-)

    This is in the VM write-back path. SLAB is insufficient to avoid
    deadlock.

    --
    Mathematics is the supreme nostalgia of our time.
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