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Commit 2d253440 authored by Shaun Tancheff's avatar Shaun Tancheff Committed by Jens Axboe
Browse files

block: Define zoned block device operations 



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: default avatarShaun Tancheff <shaun.tancheff@seagate.com>
Signed-off-by: default avatarDamien Le Moal <damien.lemoal@hgst.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: default avatarHannes Reinecke <hare@suse.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 987b3b26

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