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From: Damien Le Moal <damien.lemoal@wdc.com>
To: linux-block@vger.kernel.org, Jens Axboe <axboe@kernel.dk>,
	linux-scsi@vger.kernel.org,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	dm-devel@redhat.com, Mike Snitzer <snitzer@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>,
	Matias Bjorling <matias.bjorling@wdc.com>
Subject: [PATCH 06/11] block: Introduce BLKGETZONESZ ioctl
Date: Wed, 10 Oct 2018 10:52:34 +0900	[thread overview]
Message-ID: <20181010015239.24930-7-damien.lemoal@wdc.com> (raw)
In-Reply-To: <20181010015239.24930-1-damien.lemoal@wdc.com>

Get a zoned block device zone size in number of 512 B sectors.
The zone size is always 0 for regular block devices.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
---
 block/ioctl.c                 | 2 ++
 include/uapi/linux/blkzoned.h | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/block/ioctl.c b/block/ioctl.c
index 3884d810efd2..f6d2c6f1f050 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -532,6 +532,8 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
 		return blkdev_report_zones_ioctl(bdev, mode, cmd, arg);
 	case BLKRESETZONE:
 		return blkdev_reset_zones_ioctl(bdev, mode, cmd, arg);
+	case BLKGETZONESZ:
+		return put_uint(arg, bdev_zone_sectors(bdev));
 	case HDIO_GETGEO:
 		return blkdev_getgeo(bdev, argp);
 	case BLKRAGET:
diff --git a/include/uapi/linux/blkzoned.h b/include/uapi/linux/blkzoned.h
index ff5a5db8906a..daf47351d519 100644
--- a/include/uapi/linux/blkzoned.h
+++ b/include/uapi/linux/blkzoned.h
@@ -137,8 +137,10 @@ struct blk_zone_range {
  *                 sector specified in the report request structure.
  * @BLKRESETZONE: Reset the write pointer of the zones in the specified
  *                sector range. The sector range must be zone aligned.
+ * @BLKGETZONESZ: Get the device zone size in number of 512 B sectors.
  */
 #define BLKREPORTZONE	_IOWR(0x12, 130, struct blk_zone_report)
 #define BLKRESETZONE	_IOW(0x12, 131, struct blk_zone_range)
+#define BLKGETZONESZ	_IOW(0x12, 132, unsigned int)
 
 #endif /* _UAPI_BLKZONED_H */
-- 
2.17.1

  parent reply	other threads:[~2018-10-10  9:12 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-10  1:52 [PATCH 00/11] Zoned block device support improvements Damien Le Moal
2018-10-10  1:52 ` [PATCH 01/11] scsi: sd_zbc: Rearrange code Damien Le Moal
2018-10-10 13:25   ` Christoph Hellwig
2018-10-10 13:25     ` Christoph Hellwig
2018-10-10  1:52 ` [PATCH 02/11] scsi: sd_zbc: Reduce boot device scan and revalidate time Damien Le Moal
2018-10-10 13:26   ` Christoph Hellwig
2018-10-10 13:26     ` Christoph Hellwig
2018-10-10  1:52 ` [PATCH 03/11] scsi: sd_zbc: Fix sd_zbc_check_zones() error checks Damien Le Moal
2018-10-10 13:26   ` Christoph Hellwig
2018-10-10 13:26     ` Christoph Hellwig
2018-10-10  1:52 ` [PATCH 04/11] block: Introduce blkdev_nr_zones() helper Damien Le Moal
2018-10-10 13:26   ` Christoph Hellwig
2018-10-10 13:26     ` Christoph Hellwig
2018-10-10  1:52 ` [PATCH 05/11] block: Limit allocation of zone descriptors for report zones Damien Le Moal
2018-10-10 13:27   ` Christoph Hellwig
2018-10-10 13:27     ` Christoph Hellwig
2018-10-10  1:52 ` Damien Le Moal [this message]
2018-10-10 13:27   ` [PATCH 06/11] block: Introduce BLKGETZONESZ ioctl Christoph Hellwig
2018-10-10 13:27     ` Christoph Hellwig
2018-10-10 16:53   ` [dm-devel] " Bart Van Assche
2018-10-10 16:53     ` Bart Van Assche
2018-10-10 16:53     ` Bart Van Assche
2018-10-10  1:52 ` [PATCH 07/11] block: Introduce BLKGETNRZONES ioctl Damien Le Moal
2018-10-10 13:27   ` Christoph Hellwig
2018-10-10 13:27     ` Christoph Hellwig
2018-10-10  1:52 ` [PATCH 08/11] block: Improve zone reset execution Damien Le Moal
2018-10-10 13:28   ` Christoph Hellwig
2018-10-10 13:28     ` Christoph Hellwig
2018-10-10  1:52 ` [PATCH 09/11] block: Expose queue nr_zones in sysfs Damien Le Moal
2018-10-10 13:28   ` Christoph Hellwig
2018-10-10 13:28     ` Christoph Hellwig
2018-10-10 14:05   ` kbuild test robot
2018-10-10 14:05     ` kbuild test robot
2018-10-10 18:44   ` kbuild test robot
2018-10-10 18:44     ` kbuild test robot
2018-10-10  1:52 ` [PATCH 10/11] block: add a report_zones method Damien Le Moal
2018-10-10 14:15   ` Mike Snitzer
2018-10-10 14:15     ` Mike Snitzer
2018-10-10 16:15     ` Mike Snitzer
2018-10-10 16:15       ` Mike Snitzer
2018-10-10 14:40   ` kbuild test robot
2018-10-10 14:40     ` kbuild test robot
2018-10-10 15:34   ` Mike Snitzer
2018-10-10 15:34     ` Mike Snitzer
2018-10-10 16:25   ` kbuild test robot
2018-10-10 16:25     ` kbuild test robot
2018-10-10  1:52 ` [PATCH 11/11] block: Introduce revalidate_disk_zones() Damien Le Moal
2018-10-10 13:34   ` Christoph Hellwig
2018-10-10 13:34     ` Christoph Hellwig

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