imrcpan/erofs-linux
1
0 Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git synced 2026-11-01 23:04:54 +01:00
Code Issues Packages Projects Releases Wiki Activity

block: Introduce BLKGETZONESZ ioctl

Browse Source 
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 <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Damien Le Moal <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Damien Le Moal authored and Jens Axboe committed 2018-10-25 11:17:40 -06:00
1 parent 2e85fbaff3
commit 72cd87576d
2 files changed
+4
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

block/ioctl.c
+2
View File
@@ -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:
include/uapi/linux/blkzoned.h
+2
View File
@@ -137,8 +137,10 @@ struct blk_zone_range {
* sector specified in the report request structure.
* @BLKRESETZONE: Reset the write pointer of the zones in the specified
* sector range. The sector range must be zone aligned.
* @BLKGETZONESZ: Get the device zone size in number of 512 B sectors.
*/
#define BLKREPORTZONE _IOWR(0x12, 130, struct blk_zone_report)
#define BLKRESETZONE _IOW(0x12, 131, struct blk_zone_range)
#define BLKGETZONESZ _IOW(0x12, 132, __u32)
#endif /* _UAPI_BLKZONED_H */