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block: Introduce BLKGETNRZONES ioctl
authorDamien Le Moal <damien.lemoal@wdc.com>
Fri, 12 Oct 2018 10:08:46 +0000 (19:08 +0900)
committerJens Axboe <axboe@kernel.dk>
Thu, 25 Oct 2018 17:17:40 +0000 (11:17 -0600)
commit35e7269bdb40c05a695171da8673c5ec87cfe667
tree26d26b7a24b1a45799b38fb80f1ebf02a84e5424tree | snapshot
parent947daf823dc94c028ad6daac99a7ac6b48690fb7commit | diff
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: 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>
block/ioctl.c diff | blob | history
include/uapi/linux/blkzoned.h diff | blob | history
Linux Kernel Source Tree.