Axboe <jens.axboe@oracle.com> 1230032659 +0100
committer Jens Axboe <jens.axboe@oracle.com> 1230535792 +0100

bounce: don't rely on a zeroed bio_vec list

__blk_queue_bounce() relies on a zeroed bio_vec list, since it looks
up arbitrary indexes in the allocated bio. The block layer only
guarentees that added entries are valid, so clear memory after alloc.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
°¯©hœ