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    SubjectRe: [PATCH] Using Intel CRC32 instruction to accelerate CRC32c algorithm by new crypto API.
    On Mon, Aug 04, 2008 at 03:49:01PM +0100, David Woodhouse wrote:
    > And even for people who don't care about that, it doesn't look
    > particularly good. It looks like btrfs would need either to keep setting
    > up a crypto context and then tearing it down, or have a pool of
    > long-standing contexts and do some kind of locking on them -- neither of
    > which seem particularly optimal compared with just calling into
    > libcrc32c.

    No you don't have to set things up every time you use crc32c.
    The crypto interface lets you have a single tfm that can be
    used by multiple users simultaneously. For ahash algorithms
    all the state is stored in the request which can stay on the

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