From: Ajay Joshi <ajay.joshi@wdc.com>
Date: Sun, 27 Oct 2019 23:05:46 +0900
Subject: [PATCH] block: add zone open, close and finish ioctl support
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References: bsc#1175995,jsc#SLE-15608
Git-commit: e876df1fe0ad1b191284ee6ed2db7960bd322d00
Patch-mainline: v5.5-rc1
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>
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
block/blk-zoned.c | 28 +++++++++++++++++++++++-----
block/ioctl.c | 5 ++++-
include/linux/blkdev.h | 10 +++++-----
include/uapi/linux/blkzoned.h | 17 ++++++++++++++---
4 files changed, 46 insertions(+), 14 deletions(-)
diff --git a/block/blk-zoned.c b/block/blk-zoned.c
index 167d00528079..0131f9e14bd1 100644
--- a/block/blk-zoned.c
+++ b/block/blk-zoned.c
@@ -272,15 +272,16 @@ int blkdev_report_zones_ioctl(struct block_device *bdev, fmode_t mode,
}
/*
- * BLKRESETZONE ioctl processing.
+ * BLKRESETZONE, BLKOPENZONE, BLKCLOSEZONE and BLKFINISHZONE ioctl processing.
* Called from blkdev_ioctl.
*/
-int blkdev_reset_zones_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned int cmd, unsigned long arg)
+int blkdev_zone_mgmt_ioctl(struct block_device *bdev, fmode_t mode,
+ unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
struct request_queue *q;
struct blk_zone_range zrange;
+ enum req_opf op;
if (!argp)
return -EINVAL;
@@ -301,8 +302,25 @@ int blkdev_reset_zones_ioctl(struct block_device *bdev, fmode_t mode,
if (copy_from_user(&zrange, argp, sizeof(struct blk_zone_range)))
return -EFAULT;
- return blkdev_zone_mgmt(bdev, REQ_OP_ZONE_RESET,
- zrange.sector, zrange.nr_sectors, GFP_KERNEL);
+ switch (cmd) {
+ case BLKRESETZONE:
+ op = REQ_OP_ZONE_RESET;
+ break;
+ case BLKOPENZONE:
+ op = REQ_OP_ZONE_OPEN;
+ break;
+ case BLKCLOSEZONE:
+ op = REQ_OP_ZONE_CLOSE;
+ break;
+ case BLKFINISHZONE:
+ op = REQ_OP_ZONE_FINISH;
+ break;
+ default:
+ return -ENOTTY;
+ }
+
+ return blkdev_zone_mgmt(bdev, op, zrange.sector, zrange.nr_sectors,
+ GFP_KERNEL);
}
static inline unsigned long *blk_alloc_zone_bitmap(int node,
diff --git a/block/ioctl.c b/block/ioctl.c
index da9228c0e3fe..5de98b97af2a 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -505,7 +505,10 @@ 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:
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index b221d18c4ceb..8830cf163f9e 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -365,8 +365,8 @@ extern int blk_revalidate_disk_zones(struct gendisk *disk);
extern int blkdev_report_zones_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg);
-extern int blkdev_reset_zones_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned int cmd, unsigned long arg);
+extern int blkdev_zone_mgmt_ioctl(struct block_device *bdev, fmode_t mode,
+ unsigned int cmd, unsigned long arg);
#else /* CONFIG_BLK_DEV_ZONED */
@@ -387,9 +387,9 @@ static inline int blkdev_report_zones_ioctl(struct block_device *bdev,
return -ENOTTY;
}
-static inline int blkdev_reset_zones_ioctl(struct block_device *bdev,
- fmode_t mode, unsigned int cmd,
- unsigned long arg)
+static inline int blkdev_zone_mgmt_ioctl(struct block_device *bdev,
+ fmode_t mode, unsigned int cmd,
+ unsigned long arg)
{
return -ENOTTY;
}
diff --git a/include/uapi/linux/blkzoned.h b/include/uapi/linux/blkzoned.h
index 498eec813494..0cdef67135f0 100644
--- a/include/uapi/linux/blkzoned.h
+++ b/include/uapi/linux/blkzoned.h
@@ -120,9 +120,11 @@ struct blk_zone_report {
};
/**
- * struct blk_zone_range - BLKRESETZONE ioctl request
- * @sector: starting sector of the first zone to issue reset write pointer
- * @nr_sectors: Total number of sectors of 1 or more zones to reset
+ * struct blk_zone_range - BLKRESETZONE/BLKOPENZONE/
+ * BLKCLOSEZONE/BLKFINISHZONE ioctl
+ * requests
+ * @sector: Starting sector of the first zone to operate on.
+ * @nr_sectors: Total number of sectors of all zones to operate on.
*/
struct blk_zone_range {
__u64 sector;
@@ -139,10 +141,19 @@ struct blk_zone_range {
* sector range. The sector range must be zone aligned.
* @BLKGETZONESZ: Get the device zone size in number of 512 B sectors.
* @BLKGETNRZONES: Get the total number of zones of the device.
+ * @BLKOPENZONE: Open the zones in the specified sector range.
+ * The 512 B sector range must be zone aligned.
+ * @BLKCLOSEZONE: Close the zones in the specified sector range.
+ * The 512 B sector range must be zone aligned.
+ * @BLKFINISHZONE: Mark the zones as full in the specified sector range.
+ * The 512 B sector range must be zone aligned.
*/
#define BLKREPORTZONE _IOWR(0x12, 130, struct blk_zone_report)
#define BLKRESETZONE _IOW(0x12, 131, struct blk_zone_range)
#define BLKGETZONESZ _IOR(0x12, 132, __u32)
#define BLKGETNRZONES _IOR(0x12, 133, __u32)
+#define BLKOPENZONE _IOW(0x12, 134, struct blk_zone_range)
+#define BLKCLOSEZONE _IOW(0x12, 135, struct blk_zone_range)
+#define BLKFINISHZONE _IOW(0x12, 136, struct blk_zone_range)
#endif /* _UAPI_BLKZONED_H */
--
2.16.4