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block: add zone open, close and finish ioctl support

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Introduce three new ioctl commands BLKOPENZONE, BLKCLOSEZONE and
BLKFINISHZONE to allow applications to control the condition of zones
on a zoned block device through the execution of the REQ_OP_ZONE_OPEN,
REQ_OP_ZONE_CLOSE and REQ_OP_ZONE_FINISH operations.

Contains contributions from Matias Bjorling, Hans Holmberg,
Dmitry Fomichev, Keith Busch, Damien Le Moal and Christoph Hellwig.

Reviewed-by: Javier González <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Ajay Joshi <[email protected]>
Signed-off-by: Matias Bjorling <[email protected]>
Signed-off-by: Hans Holmberg <[email protected]>
Signed-off-by: Dmitry Fomichev <[email protected]>
Signed-off-by: Keith Busch <[email protected]>
Signed-off-by: Damien Le Moal <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Ajay Joshi 2019-10-27 23:05:46 +09:00 • committed by Jaegeuk Kim
commit 85154041a8
4 changed files with 46 additions and 14 deletions
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5
block/ioctl.c
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@ -532,7 +532,10 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
case BLKREPORTZONE:
return blkdev_report_zones_ioctl(bdev, mode, cmd, arg);
case BLKRESETZONE:
return blkdev_reset_zones_ioctl(bdev, mode, cmd, arg);
case BLKOPENZONE:
case BLKCLOSEZONE:
case BLKFINISHZONE:
return blkdev_zone_mgmt_ioctl(bdev, mode, cmd, arg);
case BLKGETZONESZ:
return put_uint(arg, bdev_zone_sectors(bdev));
case BLKGETNRZONES: