Add vsync io engine
authorJens Axboe <jens.axboe@oracle.com>
Mon, 4 Feb 2008 09:59:07 +0000 (10:59 +0100)
committerJens Axboe <jens.axboe@oracle.com>
Mon, 4 Feb 2008 09:59:07 +0000 (10:59 +0100)
It uses readv/writev to transfer the data and coalesces adjacent
data into a single system call (emulating queueing).

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

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