block: Define zoned block device operations (2d253440) · Commits · 戴 / test

Define REQ_OP_ZONE_REPORT and REQ_OP_ZONE_RESET for handling zones of host-managed and host-aware zoned block devices. With with these two new operations, the total number of operations defined reaches 8 and still fits with the 3 bits definition of REQ_OP_BITS. Signed-off-by:

Shaun Tancheff <shaun.tancheff@seagate.com> Signed-off-by:

Damien Le Moal <damien.lemoal@hgst.com> Reviewed-by:

Christoph Hellwig <hch@lst.de> Reviewed-by:

Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by:

Hannes Reinecke <hare@suse.com> Signed-off-by:

Jens Axboe <axboe@fb.com>

block/blk-core.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1941,6 +1941,10 @@ generic_make_request_checks(struct bio *bio)
		case REQ_OP_WRITE_SAME:
		if (!bdev_write_same(bio->bi_bdev))
		goto not_supported;
		case REQ_OP_ZONE_REPORT:
		case REQ_OP_ZONE_RESET:
		if (!bdev_is_zoned(bio->bi_bdev))
		goto not_supported;
		break;
		default:
		break;

include/linux/blk_types.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -243,6 +243,8 @@ enum req_op {
		REQ_OP_SECURE_ERASE, /* request to securely erase sectors */
		REQ_OP_WRITE_SAME, /* write same block many times */
		REQ_OP_FLUSH, /* request for cache flush */
		REQ_OP_ZONE_REPORT, /* Get zone information */
		REQ_OP_ZONE_RESET, /* Reset a zone write pointer */
		};

		#define REQ_OP_BITS 3

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