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block: add zone open, close and finish ioctl support
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 <javier@javigon.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ajay Joshi <ajay.joshi@wdc.com> Signed-off-by: Matias Bjorling <matias.bjorling@wdc.com> Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com> Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com> Signed-off-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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6c1b1da58f
commit
e876df1fe0
4 changed files with 46 additions and 14 deletions
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@ -357,15 +357,16 @@ int blkdev_report_zones_ioctl(struct block_device *bdev, fmode_t mode,
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}
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/*
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* BLKRESETZONE ioctl processing.
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* BLKRESETZONE, BLKOPENZONE, BLKCLOSEZONE and BLKFINISHZONE ioctl processing.
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* Called from blkdev_ioctl.
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*/
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int blkdev_reset_zones_ioctl(struct block_device *bdev, fmode_t mode,
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unsigned int cmd, unsigned long arg)
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int blkdev_zone_mgmt_ioctl(struct block_device *bdev, fmode_t mode,
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unsigned int cmd, unsigned long arg)
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{
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void __user *argp = (void __user *)arg;
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struct request_queue *q;
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struct blk_zone_range zrange;
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enum req_opf op;
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if (!argp)
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return -EINVAL;
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@ -386,8 +387,25 @@ int blkdev_reset_zones_ioctl(struct block_device *bdev, fmode_t mode,
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if (copy_from_user(&zrange, argp, sizeof(struct blk_zone_range)))
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return -EFAULT;
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return blkdev_zone_mgmt(bdev, REQ_OP_ZONE_RESET,
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zrange.sector, zrange.nr_sectors, GFP_KERNEL);
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switch (cmd) {
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case BLKRESETZONE:
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op = REQ_OP_ZONE_RESET;
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break;
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case BLKOPENZONE:
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op = REQ_OP_ZONE_OPEN;
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break;
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case BLKCLOSEZONE:
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op = REQ_OP_ZONE_CLOSE;
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break;
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case BLKFINISHZONE:
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op = REQ_OP_ZONE_FINISH;
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break;
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default:
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return -ENOTTY;
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}
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return blkdev_zone_mgmt(bdev, op, zrange.sector, zrange.nr_sectors,
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GFP_KERNEL);
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}
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static inline unsigned long *blk_alloc_zone_bitmap(int node,
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@ -532,7 +532,10 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
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case BLKREPORTZONE:
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return blkdev_report_zones_ioctl(bdev, mode, cmd, arg);
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case BLKRESETZONE:
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return blkdev_reset_zones_ioctl(bdev, mode, cmd, arg);
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case BLKOPENZONE:
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case BLKCLOSEZONE:
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case BLKFINISHZONE:
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return blkdev_zone_mgmt_ioctl(bdev, mode, cmd, arg);
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case BLKGETZONESZ:
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return put_uint(arg, bdev_zone_sectors(bdev));
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case BLKGETNRZONES:
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@ -367,8 +367,8 @@ extern int blk_revalidate_disk_zones(struct gendisk *disk);
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extern int blkdev_report_zones_ioctl(struct block_device *bdev, fmode_t mode,
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unsigned int cmd, unsigned long arg);
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extern int blkdev_reset_zones_ioctl(struct block_device *bdev, fmode_t mode,
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unsigned int cmd, unsigned long arg);
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extern int blkdev_zone_mgmt_ioctl(struct block_device *bdev, fmode_t mode,
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unsigned int cmd, unsigned long arg);
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#else /* CONFIG_BLK_DEV_ZONED */
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@ -389,9 +389,9 @@ static inline int blkdev_report_zones_ioctl(struct block_device *bdev,
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return -ENOTTY;
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}
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static inline int blkdev_reset_zones_ioctl(struct block_device *bdev,
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fmode_t mode, unsigned int cmd,
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unsigned long arg)
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static inline int blkdev_zone_mgmt_ioctl(struct block_device *bdev,
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fmode_t mode, unsigned int cmd,
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unsigned long arg)
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{
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return -ENOTTY;
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}
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@ -120,9 +120,11 @@ struct blk_zone_report {
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};
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/**
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* struct blk_zone_range - BLKRESETZONE ioctl request
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* @sector: starting sector of the first zone to issue reset write pointer
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* @nr_sectors: Total number of sectors of 1 or more zones to reset
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* struct blk_zone_range - BLKRESETZONE/BLKOPENZONE/
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* BLKCLOSEZONE/BLKFINISHZONE ioctl
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* requests
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* @sector: Starting sector of the first zone to operate on.
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* @nr_sectors: Total number of sectors of all zones to operate on.
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*/
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struct blk_zone_range {
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__u64 sector;
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@ -139,10 +141,19 @@ struct blk_zone_range {
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* sector range. The sector range must be zone aligned.
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* @BLKGETZONESZ: Get the device zone size in number of 512 B sectors.
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* @BLKGETNRZONES: Get the total number of zones of the device.
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* @BLKOPENZONE: Open the zones in the specified sector range.
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* The 512 B sector range must be zone aligned.
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* @BLKCLOSEZONE: Close the zones in the specified sector range.
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* The 512 B sector range must be zone aligned.
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* @BLKFINISHZONE: Mark the zones as full in the specified sector range.
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* The 512 B sector range must be zone aligned.
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*/
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#define BLKREPORTZONE _IOWR(0x12, 130, struct blk_zone_report)
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#define BLKRESETZONE _IOW(0x12, 131, struct blk_zone_range)
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#define BLKGETZONESZ _IOR(0x12, 132, __u32)
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#define BLKGETNRZONES _IOR(0x12, 133, __u32)
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#define BLKOPENZONE _IOW(0x12, 134, struct blk_zone_range)
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#define BLKCLOSEZONE _IOW(0x12, 135, struct blk_zone_range)
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#define BLKFINISHZONE _IOW(0x12, 136, struct blk_zone_range)
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#endif /* _UAPI_BLKZONED_H */
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