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bio: only mempool back the largest bio_vec slab cache
authorJens Axboe <jens.axboe@oracle.com>
Thu, 11 Dec 2008 10:53:43 +0000 (11:53 +0100)
committerJens Axboe <jens.axboe@oracle.com>
Mon, 29 Dec 2008 07:28:46 +0000 (08:28 +0100)
We only very rarely need the mempool backing, so it makes sense to
get rid of all but one of the mempool in a bio_set. So keep the
largest bio_vec count mempool so we can always honor the largest
allocation, and "upgrade" callers that fail.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

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