Commit 3deff1a7 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

md: support REQ_OP_WRITE_ZEROES 



Copy & paste from the REQ_OP_WRITE_SAME code.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarHannes Reinecke <hare@suse.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 02d26103

drivers/md/linear.c

+1 −0
Original line number Diff line number Diff line
@@ -293,6 +293,7 @@ static void linear_make_request(struct mddev *mddev, struct bio *bio) 
						      split, disk_devt(mddev->gendisk),

						      bio_sector);

			mddev_check_writesame(mddev, split);

			mddev_check_write_zeroes(mddev, split);

			generic_make_request(split);

		}

	} while (split != bio);

drivers/md/md.h

+7 −0
Original line number Diff line number Diff line
@@ -709,4 +709,11 @@ static inline void mddev_check_writesame(struct mddev *mddev, struct bio *bio) 
	    !bdev_get_queue(bio->bi_bdev)->limits.max_write_same_sectors)

		mddev->queue->limits.max_write_same_sectors = 0;

}



static inline void mddev_check_write_zeroes(struct mddev *mddev, struct bio *bio)

{

	if (bio_op(bio) == REQ_OP_WRITE_ZEROES &&

	    !bdev_get_queue(bio->bi_bdev)->limits.max_write_zeroes_sectors)

		mddev->queue->limits.max_write_zeroes_sectors = 0;

}

#endif /* _MD_MD_H */

drivers/md/multipath.c

+1 −0
Original line number Diff line number Diff line
@@ -139,6 +139,7 @@ static void multipath_make_request(struct mddev *mddev, struct bio * bio) 
	mp_bh->bio.bi_end_io = multipath_end_request;

	mp_bh->bio.bi_private = mp_bh;

	mddev_check_writesame(mddev, &mp_bh->bio);

	mddev_check_write_zeroes(mddev, &mp_bh->bio);

	generic_make_request(&mp_bh->bio);

	return;

}

drivers/md/raid0.c

+2 −0
Original line number Diff line number Diff line
@@ -383,6 +383,7 @@ static int raid0_run(struct mddev *mddev) 


		blk_queue_max_hw_sectors(mddev->queue, mddev->chunk_sectors);

		blk_queue_max_write_same_sectors(mddev->queue, mddev->chunk_sectors);

		blk_queue_max_write_zeroes_sectors(mddev->queue, mddev->chunk_sectors);

		blk_queue_max_discard_sectors(mddev->queue, mddev->chunk_sectors);



		blk_queue_io_min(mddev->queue, mddev->chunk_sectors << 9);
@@ -504,6 +505,7 @@ static void raid0_make_request(struct mddev *mddev, struct bio *bio) 
						      split, disk_devt(mddev->gendisk),

						      bio_sector);

			mddev_check_writesame(mddev, split);

			mddev_check_write_zeroes(mddev, split);

			generic_make_request(split);

		}

	} while (split != bio);

drivers/md/raid1.c

+3 −1
Original line number Diff line number Diff line
@@ -3177,8 +3177,10 @@ static int raid1_run(struct mddev *mddev) 
	if (IS_ERR(conf))

		return PTR_ERR(conf);



	if (mddev->queue)

	if (mddev->queue) {

		blk_queue_max_write_same_sectors(mddev->queue, 0);

		blk_queue_max_write_zeroes_sectors(mddev->queue, 0);

	}



	rdev_for_each(rdev, mddev) {

		if (!mddev->gendisk)