| Message ID | 20181010015239.24930-8-damien.lemoal@wdc.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | Zoned block device support improvements | expand |
On Wed, Oct 10, 2018 at 10:52:35AM +0900, Damien Le Moal wrote: > 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. Looks good, Reviewed-by: Christoph Hellwig <hch@lst.de>
diff --git a/block/ioctl.c b/block/ioctl.c index f6d2c6f1f050..4825c78a6baa 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -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: diff --git a/include/uapi/linux/blkzoned.h b/include/uapi/linux/blkzoned.h index daf47351d519..1f96f7f41a86 100644 --- a/include/uapi/linux/blkzoned.h +++ b/include/uapi/linux/blkzoned.h @@ -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, unsigned int) +#define BLKGETNRZONES _IOW(0x12, 133, unsigned int) #endif /* _UAPI_BLKZONED_H */
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. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> --- block/ioctl.c | 2 ++ include/uapi/linux/blkzoned.h | 1 + 2 files changed, 3 insertions(+)