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

Commit 65e4e3ee authored by Damien Le Moal's avatar Damien Le Moal Committed by Jens Axboe
Browse files

block: Introduce BLKGETNRZONES ioctl 



Get a zoned block device total number of zones. The device can be a
partition of the whole device. The number of zones is always 0 for
regular block devices.

Reviewed-by: default avatarHannes Reinecke <hare@suse.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarDamien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 72cd8757

block/ioctl.c

+2 −0
Original line number Diff line number Diff line
@@ -534,6 +534,8 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd, 
		return blkdev_reset_zones_ioctl(bdev, mode, cmd, arg);

	case BLKGETZONESZ:

		return put_uint(arg, bdev_zone_sectors(bdev));

	case BLKGETNRZONES:

		return put_uint(arg, blkdev_nr_zones(bdev));

	case HDIO_GETGEO:

		return blkdev_getgeo(bdev, argp);

	case BLKRAGET:

include/uapi/linux/blkzoned.h

+1 −0
Original line number Diff line number Diff line
@@ -142,5 +142,6 @@ struct blk_zone_range { 
#define BLKREPORTZONE	_IOWR(0x12, 130, struct blk_zone_report)

#define BLKRESETZONE	_IOW(0x12, 131, struct blk_zone_range)

#define BLKGETZONESZ	_IOW(0x12, 132, __u32)

#define BLKGETNRZONES	_IOW(0x12, 133, __u32)



#endif /* _UAPI_BLKZONED_H */