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| author |   Damien Le Moal <damien.lemoal@wdc.com> | 2018-10-12 19:08:45 +0900 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2018-10-25 11:17:40 -0600 |
| commit | 72cd87576d1d885fc2968416ed5aca8f54749653 (patch) | |
| tree | c965a7ffee387262de03c108c6fecc837e5b98bb /block | |
| parent | block: Limit allocation of zone descriptors for report zones (diff) | |
| download | linux-dev-72cd87576d1d885fc2968416ed5aca8f54749653.tar.xz linux-dev-72cd87576d1d885fc2968416ed5aca8f54749653.zip | |
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.c | 2 |
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: |