diff options
| -rw-r--r-- | Documentation/ABI/testing/sysfs-block | 9 | ||||
| -rw-r--r-- | Documentation/block/queue-sysfs.rst | 7 | ||||
| -rw-r--r-- | block/blk-sysfs.c | 14 | ||||
| -rw-r--r-- | drivers/nvme/host/zns.c | 1 | ||||
| -rw-r--r-- | drivers/scsi/sd_zbc.c | 1 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 25 |
6 files changed, 56 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-block b/Documentation/ABI/testing/sysfs-block index f151d9cf90de..2322eb748b38 100644 --- a/Documentation/ABI/testing/sysfs-block +++ b/Documentation/ABI/testing/sysfs-block @@ -273,6 +273,15 @@ Description: device ("host-aware" or "host-managed" zone model). For regular block devices, the value is always 0. +What: /sys/block/<disk>/queue/max_active_zones +Date: July 2020 +Contact: Niklas Cassel <niklas.cassel@wdc.com> +Description: + For zoned block devices (zoned attribute indicating + "host-managed" or "host-aware"), the sum of zones belonging to + any of the zone states: EXPLICIT OPEN, IMPLICIT OPEN or CLOSED, + is limited by this value. If this value is 0, there is no limit. + What: /sys/block/<disk>/queue/max_open_zones Date: July 2020 Contact: Niklas Cassel <niklas.cassel@wdc.com> diff --git a/Documentation/block/queue-sysfs.rst b/Documentation/block/queue-sysfs.rst index f01cf8530ae4..f261a5c84170 100644 --- a/Documentation/block/queue-sysfs.rst +++ b/Documentation/block/queue-sysfs.rst @@ -117,6 +117,13 @@ Maximum number of elements in a DMA scatter/gather list with integrity data that will be submitted by the block layer core to the associated block driver. +max_active_zones (RO) +--------------------- +For zoned block devices (zoned attribute indicating "host-managed" or +"host-aware"), the sum of zones belonging to any of the zone states: +EXPLICIT OPEN, IMPLICIT OPEN or CLOSED, is limited by this value. +If this value is 0, there is no limit. + max_open_zones (RO) ------------------- For zoned block devices (zoned attribute indicating "host-managed" or diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 414f04579d77..7dda709f3ccb 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -311,6 +311,11 @@ static ssize_t queue_max_open_zones_show(struct request_queue *q, char *page) return queue_var_show(queue_max_open_zones(q), page); } +static ssize_t queue_max_active_zones_show(struct request_queue *q, char *page) +{ + return queue_var_show(queue_max_active_zones(q), page); +} + static ssize_t queue_nomerges_show(struct request_queue *q, char *page) { return queue_var_show((blk_queue_nomerges(q) << 1) | @@ -678,6 +683,11 @@ static struct queue_sysfs_entry queue_max_open_zones_entry = { .show = queue_max_open_zones_show, }; +static struct queue_sysfs_entry queue_max_active_zones_entry = { + .attr = {.name = "max_active_zones", .mode = 0444 }, + .show = queue_max_active_zones_show, +}; + static struct queue_sysfs_entry queue_nomerges_entry = { .attr = {.name = "nomerges", .mode = 0644 }, .show = queue_nomerges_show, @@ -777,6 +787,7 @@ static struct attribute *queue_attrs[] = { &queue_zoned_entry.attr, &queue_nr_zones_entry.attr, &queue_max_open_zones_entry.attr, + &queue_max_active_zones_entry.attr, &queue_nomerges_entry.attr, &queue_rq_affinity_entry.attr, &queue_iostats_entry.attr, @@ -804,7 +815,8 @@ static umode_t queue_attr_visible(struct kobject *kobj, struct attribute *attr, (!q->mq_ops || !q->mq_ops->timeout)) return 0; - if (attr == &queue_max_open_zones_entry.attr && + if ((attr == &queue_max_open_zones_entry.attr || + attr == &queue_max_active_zones_entry.attr) && !blk_queue_is_zoned(q)) return 0; diff --git a/drivers/nvme/host/zns.c b/drivers/nvme/host/zns.c index 3d80b9cf6bfc..57cfd78731fb 100644 --- a/drivers/nvme/host/zns.c +++ b/drivers/nvme/host/zns.c @@ -97,6 +97,7 @@ int nvme_update_zone_info(struct gendisk *disk, struct nvme_ns *ns, q->limits.zoned = BLK_ZONED_HM; blk_queue_flag_set(QUEUE_FLAG_ZONE_RESETALL, q); blk_queue_max_open_zones(q, le32_to_cpu(id->mor) + 1); + blk_queue_max_active_zones(q, le32_to_cpu(id->mar) + 1); free_data: kfree(id); return status; diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c index aa3564139b40..d8b2c49d645b 100644 --- a/drivers/scsi/sd_zbc.c +++ b/drivers/scsi/sd_zbc.c @@ -721,6 +721,7 @@ int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buf) blk_queue_max_open_zones(q, 0); else blk_queue_max_open_zones(q, sdkp->zones_max_open); + blk_queue_max_active_zones(q, 0); nr_zones = round_up(sdkp->capacity, zone_blocks) >> ilog2(zone_blocks); /* READ16/WRITE16 is mandatory for ZBC disks */ diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index c8beb8bbdb08..285b59cfc064 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -514,6 +514,7 @@ struct request_queue { unsigned long *conv_zones_bitmap; unsigned long *seq_zones_wlock; unsigned int max_open_zones; + unsigned int max_active_zones; #endif /* CONFIG_BLK_DEV_ZONED */ /* @@ -734,6 +735,17 @@ static inline unsigned int queue_max_open_zones(const struct request_queue *q) { return q->max_open_zones; } + +static inline void blk_queue_max_active_zones(struct request_queue *q, + unsigned int max_active_zones) +{ + q->max_active_zones = max_active_zones; +} + +static inline unsigned int queue_max_active_zones(const struct request_queue *q) +{ + return q->max_active_zones; +} #else /* CONFIG_BLK_DEV_ZONED */ static inline unsigned int blk_queue_nr_zones(struct request_queue *q) { @@ -753,6 +765,10 @@ static inline unsigned int queue_max_open_zones(const struct request_queue *q) { return 0; } +static inline unsigned int queue_max_active_zones(const struct request_queue *q) +{ + return 0; +} #endif /* CONFIG_BLK_DEV_ZONED */ static inline bool rq_is_sync(struct request *rq) @@ -1544,6 +1560,15 @@ static inline unsigned int bdev_max_open_zones(struct block_device *bdev) return 0; } +static inline unsigned int bdev_max_active_zones(struct block_device *bdev) +{ + struct request_queue *q = bdev_get_queue(bdev); + + if (q) + return queue_max_active_zones(q); + return 0; +} + static inline int queue_dma_alignment(const struct request_queue *q) { return q ? q->dma_alignment : 511; |