Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 72cd8757 authored Oct 12, 2018 by Damien Le Moal Committed by Jens Axboe Oct 25, 2018

block: Introduce BLKGETZONESZ ioctl



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

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 2e85fbaf

block/ioctl.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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:

include/uapi/linux/blkzoned.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -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, __u32)

		#endif /* _UAPI_BLKZONED_H */