dm: add zone open, close and finish support
Implement REQ_OP_ZONE_OPEN, REQ_OP_ZONE_CLOSE and REQ_OP_ZONE_FINISH support to allow explicit control of zone states. Contains contributions from Matias Bjorling, Hans Holmberg and Damien Le Moal. Acked-by: Mike Snitzer <snitzer@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ajay Joshi <ajay.joshi@wdc.com> Signed-off-by: Matias Bjorling <matias.bjorling@wdc.com> Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -280,7 +280,7 @@ static void flakey_map_bio(struct dm_target *ti, struct bio *bio)
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struct flakey_c *fc = ti->private;
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bio_set_dev(bio, fc->dev->bdev);
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if (bio_sectors(bio) || bio_op(bio) == REQ_OP_ZONE_RESET)
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if (bio_sectors(bio) || op_is_zone_mgmt(bio_op(bio)))
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bio->bi_iter.bi_sector =
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flakey_map_sector(ti, bio->bi_iter.bi_sector);
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}
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@ -322,8 +322,7 @@ static int flakey_map(struct dm_target *ti, struct bio *bio)
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struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data));
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pb->bio_submitted = false;
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/* Do not fail reset zone */
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if (bio_op(bio) == REQ_OP_ZONE_RESET)
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if (op_is_zone_mgmt(bio_op(bio)))
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goto map_bio;
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/* Are we alive ? */
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@ -384,7 +383,7 @@ static int flakey_end_io(struct dm_target *ti, struct bio *bio,
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struct flakey_c *fc = ti->private;
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struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data));
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if (bio_op(bio) == REQ_OP_ZONE_RESET)
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if (op_is_zone_mgmt(bio_op(bio)))
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return DM_ENDIO_DONE;
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if (!*error && pb->bio_submitted && (bio_data_dir(bio) == READ)) {
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@ -90,7 +90,7 @@ static void linear_map_bio(struct dm_target *ti, struct bio *bio)
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struct linear_c *lc = ti->private;
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bio_set_dev(bio, lc->dev->bdev);
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if (bio_sectors(bio) || bio_op(bio) == REQ_OP_ZONE_RESET)
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if (bio_sectors(bio) || op_is_zone_mgmt(bio_op(bio)))
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bio->bi_iter.bi_sector =
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linear_map_sector(ti, bio->bi_iter.bi_sector);
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}
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@ -1174,7 +1174,8 @@ static size_t dm_dax_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff,
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/*
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* A target may call dm_accept_partial_bio only from the map routine. It is
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* allowed for all bio types except REQ_PREFLUSH and REQ_OP_ZONE_RESET.
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* allowed for all bio types except REQ_PREFLUSH, REQ_OP_ZONE_RESET,
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* REQ_OP_ZONE_OPEN, REQ_OP_ZONE_CLOSE and REQ_OP_ZONE_FINISH.
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*
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* dm_accept_partial_bio informs the dm that the target only wants to process
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* additional n_sectors sectors of the bio and the rest of the data should be
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@ -1627,7 +1628,7 @@ static blk_qc_t __split_and_process_bio(struct mapped_device *md,
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ci.sector_count = 0;
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error = __send_empty_flush(&ci);
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/* dec_pending submits any data associated with flush */
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} else if (bio_op(bio) == REQ_OP_ZONE_RESET) {
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} else if (op_is_zone_mgmt(bio_op(bio))) {
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ci.bio = bio;
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ci.sector_count = 0;
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error = __split_and_process_non_flush(&ci);
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