blk-mq: Micro-optimize blk_queue_nomerges() check
In blk_mq_make_request(), do the blk_queue_nomerges() check outside the call to blk_attempt_plug_merge() to eliminate function call overhead when nomerges=2 (disabled) Signed-off-by: NRobert Elliott <elliott@hp.com> Signed-off-by: NJens Axboe <axboe@fb.com>
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