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authorDamien Le Moal <damien.lemoal@wdc.com>2018-10-12 19:08:45 +0900
committerJens Axboe <axboe@kernel.dk>2018-10-25 11:17:40 -0600
commit72cd87576d1d885fc2968416ed5aca8f54749653 (patch)
treec965a7ffee387262de03c108c6fecc837e5b98bb /block
parent2e85fbaff3a71e46038ec736186c42ffa721c775 (diff)
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>
Diffstat (limited to 'block')
-rw-r--r--block/ioctl.c2
1 files changed, 2 insertions, 0 deletions
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: