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blk-throttle: Use blk_plug in throttle dispatch
Use plug in throttle dispatch also as we are dispatching a bunch of bios in throttle context and some of them might merge. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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@ -770,6 +770,7 @@ static int throtl_dispatch(struct request_queue *q)
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unsigned int nr_disp = 0;
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struct bio_list bio_list_on_stack;
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struct bio *bio;
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struct blk_plug plug;
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spin_lock_irq(q->queue_lock);
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@ -798,8 +799,10 @@ out:
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* immediate dispatch
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*/
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if (nr_disp) {
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blk_start_plug(&plug);
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while((bio = bio_list_pop(&bio_list_on_stack)))
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generic_make_request(bio);
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blk_finish_plug(&plug);
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}
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return nr_disp;
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}
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