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[v3,4/7] block: Define zoned block device operations

Message ID 1475025757-6340-5-git-send-email-damien.lemoal@hgst.com (mailing list archive)
State New, archived
Headers show

Commit Message

Damien Le Moal Sept. 28, 2016, 1:22 a.m. UTC 
From: Shaun Tancheff <shaun.tancheff@seagate.com>

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>
---
 block/blk-core.c          | 4 ++++
 include/linux/blk_types.h | 2 ++
 2 files changed, 6 insertions(+)

Comments

Martin K. Petersen Sept. 28, 2016, 3:45 a.m. UTC | #1 
>>>>> "Damien" == Damien Le Moal <damien.lemoal@hgst.com> writes:

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

Nicer!

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

Patch

diff --git a/block/blk-core.c b/block/blk-core.c
index 14d7c07..e4eda5d 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -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;
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index cd395ec..dd50dce 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -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