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    SubjectRe: [PATCH v2 0/3] staging: zcache: xcfmalloc support
    On 09/15/2011 03:24 PM, Seth Jennings wrote:

    > On 09/15/2011 12:29 PM, Dan Magenheimer wrote:
    >>> From: Seth Jennings []
    >>> Subject: Re: [PATCH v2 0/3] staging: zcache: xcfmalloc support

    >> Seth, I am still not clear why it is not possible to support
    >> either allocation algorithm, selectable at runtime. Or even
    >> dynamically... use xvmalloc to store well-compressible pages
    >> and xcfmalloc for poorly-compressible pages. I understand
    >> it might require some additional coding, perhaps even an
    >> ugly hack or two, but it seems possible.
    > But why do an ugly hack if we can just use a single allocator
    > that has the best overall performance for the allocation range
    > the zcache requires. Why make it more complicated that it
    > needs to be?

    I agree with Seth here: a mix of different allocators for the (small)
    range of sizes which zcache requires, looks like a bad idea to me.
    Maintaining two allocators is a pain and this will also complicate
    future plans like compaction etc.


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