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    SubjectRe: [PATCH 0/5] make slab gfp fair
    On Mon, 14 May 2007 11:12:24 -0500
    Matt Mackall <mpm@selenic.com> wrote:

    > If I understand this correctly:
    >
    > privileged thread unprivileged greedy process
    > kmem_cache_alloc(...)
    > adds new slab page from lowmem pool
    > do_io()
    > kmem_cache_alloc(...)
    > kmem_cache_alloc(...)
    > kmem_cache_alloc(...)
    > kmem_cache_alloc(...)
    > kmem_cache_alloc(...)
    > ...
    > eats it all
    > kmem_cache_alloc(...) -> ENOMEM
    > who ate my donuts?!

    Yes, that's my understanding also.

    I can see why it's a problem in theory, but I don't think Peter has yet
    revealed to us why it's a problem in practice. I got all excited when
    Christoph asked "I am not sure what the point of all of this is.", but
    Peter cunningly avoided answering that ;)

    What observed problem is being fixed here?
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