[PATCH 22/26] block: move the zoned flag into the features field
Christoph Hellwig
hch at lst.de
Mon Jun 17 16:04:49 AEST 2024
Move the zoned flags into the features field to reclaim a little
bit of space.
Signed-off-by: Christoph Hellwig <hch at lst.de>
Reviewed-by: Damien Le Moal <dlemoal at kernel.org>
---
block/blk-settings.c | 5 ++---
drivers/block/null_blk/zoned.c | 2 +-
drivers/block/ublk_drv.c | 2 +-
drivers/block/virtio_blk.c | 5 +++--
drivers/md/dm-table.c | 11 ++++++-----
drivers/md/dm-zone.c | 2 +-
drivers/md/dm-zoned-target.c | 2 +-
drivers/nvme/host/zns.c | 2 +-
drivers/scsi/sd_zbc.c | 2 +-
include/linux/blkdev.h | 9 ++++++---
10 files changed, 23 insertions(+), 19 deletions(-)
diff --git a/block/blk-settings.c b/block/blk-settings.c
index 026ba68d829856..96e07f24bd9aa1 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -68,7 +68,7 @@ static void blk_apply_bdi_limits(struct backing_dev_info *bdi,
static int blk_validate_zoned_limits(struct queue_limits *lim)
{
- if (!lim->zoned) {
+ if (!(lim->features & BLK_FEAT_ZONED)) {
if (WARN_ON_ONCE(lim->max_open_zones) ||
WARN_ON_ONCE(lim->max_active_zones) ||
WARN_ON_ONCE(lim->zone_write_granularity) ||
@@ -602,8 +602,7 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
b->max_secure_erase_sectors);
t->zone_write_granularity = max(t->zone_write_granularity,
b->zone_write_granularity);
- t->zoned = max(t->zoned, b->zoned);
- if (!t->zoned) {
+ if (!(t->features & BLK_FEAT_ZONED)) {
t->zone_write_granularity = 0;
t->max_zone_append_sectors = 0;
}
diff --git a/drivers/block/null_blk/zoned.c b/drivers/block/null_blk/zoned.c
index f118d304f31080..ca8e739e76b981 100644
--- a/drivers/block/null_blk/zoned.c
+++ b/drivers/block/null_blk/zoned.c
@@ -158,7 +158,7 @@ int null_init_zoned_dev(struct nullb_device *dev,
sector += dev->zone_size_sects;
}
- lim->zoned = true;
+ lim->features |= BLK_FEAT_ZONED;
lim->chunk_sectors = dev->zone_size_sects;
lim->max_zone_append_sectors = dev->zone_append_max_sectors;
lim->max_open_zones = dev->zone_max_open;
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 4fcde099935868..69c16018cbb19a 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -2196,7 +2196,7 @@ static int ublk_ctrl_start_dev(struct ublk_device *ub, struct io_uring_cmd *cmd)
if (!IS_ENABLED(CONFIG_BLK_DEV_ZONED))
return -EOPNOTSUPP;
- lim.zoned = true;
+ lim.features |= BLK_FEAT_ZONED;
lim.max_active_zones = p->max_active_zones;
lim.max_open_zones = p->max_open_zones;
lim.max_zone_append_sectors = p->max_zone_append_sectors;
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 13a2f24f176628..cea45b296f8bec 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -728,7 +728,7 @@ static int virtblk_read_zoned_limits(struct virtio_blk *vblk,
dev_dbg(&vdev->dev, "probing host-managed zoned device\n");
- lim->zoned = true;
+ lim->features |= BLK_FEAT_ZONED;
virtio_cread(vdev, struct virtio_blk_config,
zoned.max_open_zones, &v);
@@ -1546,7 +1546,8 @@ static int virtblk_probe(struct virtio_device *vdev)
* All steps that follow use the VQs therefore they need to be
* placed after the virtio_device_ready() call above.
*/
- if (IS_ENABLED(CONFIG_BLK_DEV_ZONED) && lim.zoned) {
+ if (IS_ENABLED(CONFIG_BLK_DEV_ZONED) &&
+ (lim.features & BLK_FEAT_ZONED)) {
blk_queue_flag_set(QUEUE_FLAG_ZONE_RESETALL, vblk->disk->queue);
err = blk_revalidate_disk_zones(vblk->disk);
if (err)
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index ca1f136575cff4..df6313c3fe6ba4 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -1605,12 +1605,12 @@ int dm_calculate_queue_limits(struct dm_table *t,
ti->type->iterate_devices(ti, dm_set_device_limits,
&ti_limits);
- if (!zoned && ti_limits.zoned) {
+ if (!zoned && (ti_limits.features & BLK_FEAT_ZONED)) {
/*
* After stacking all limits, validate all devices
* in table support this zoned model and zone sectors.
*/
- zoned = ti_limits.zoned;
+ zoned = (ti_limits.features & BLK_FEAT_ZONED);
zone_sectors = ti_limits.chunk_sectors;
}
@@ -1658,12 +1658,12 @@ int dm_calculate_queue_limits(struct dm_table *t,
* zoned model on host-managed zoned block devices.
* BUT...
*/
- if (limits->zoned) {
+ if (limits->features & BLK_FEAT_ZONED) {
/*
* ...IF the above limits stacking determined a zoned model
* validate that all of the table's devices conform to it.
*/
- zoned = limits->zoned;
+ zoned = limits->features & BLK_FEAT_ZONED;
zone_sectors = limits->chunk_sectors;
}
if (validate_hardware_zoned(t, zoned, zone_sectors))
@@ -1834,7 +1834,8 @@ int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
* For a zoned target, setup the zones related queue attributes
* and resources necessary for zone append emulation if necessary.
*/
- if (IS_ENABLED(CONFIG_BLK_DEV_ZONED) && limits->zoned) {
+ if (IS_ENABLED(CONFIG_BLK_DEV_ZONED) &&
+ (limits->features & limits->features & BLK_FEAT_ZONED)) {
r = dm_set_zones_restrictions(t, q, limits);
if (r)
return r;
diff --git a/drivers/md/dm-zone.c b/drivers/md/dm-zone.c
index 5d66d916730efa..88d313229b43ff 100644
--- a/drivers/md/dm-zone.c
+++ b/drivers/md/dm-zone.c
@@ -263,7 +263,7 @@ int dm_set_zones_restrictions(struct dm_table *t, struct request_queue *q,
if (nr_conv_zones >= ret) {
lim->max_open_zones = 0;
lim->max_active_zones = 0;
- lim->zoned = false;
+ lim->features &= ~BLK_FEAT_ZONED;
clear_bit(DMF_EMULATE_ZONE_APPEND, &md->flags);
disk->nr_zones = 0;
return 0;
diff --git a/drivers/md/dm-zoned-target.c b/drivers/md/dm-zoned-target.c
index 12236e6f46f39c..cd0ee144973f9f 100644
--- a/drivers/md/dm-zoned-target.c
+++ b/drivers/md/dm-zoned-target.c
@@ -1009,7 +1009,7 @@ static void dmz_io_hints(struct dm_target *ti, struct queue_limits *limits)
limits->max_sectors = chunk_sectors;
/* We are exposing a drive-managed zoned block device */
- limits->zoned = false;
+ limits->features &= ~BLK_FEAT_ZONED;
}
/*
diff --git a/drivers/nvme/host/zns.c b/drivers/nvme/host/zns.c
index 77aa0f440a6d2a..06f2417aa50de7 100644
--- a/drivers/nvme/host/zns.c
+++ b/drivers/nvme/host/zns.c
@@ -108,7 +108,7 @@ int nvme_query_zone_info(struct nvme_ns *ns, unsigned lbaf,
void nvme_update_zone_info(struct nvme_ns *ns, struct queue_limits *lim,
struct nvme_zone_info *zi)
{
- lim->zoned = 1;
+ lim->features |= BLK_FEAT_ZONED;
lim->max_open_zones = zi->max_open_zones;
lim->max_active_zones = zi->max_active_zones;
lim->max_zone_append_sectors = ns->ctrl->max_zone_append;
diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c
index 360ec980499529..d3f84665946ec4 100644
--- a/drivers/scsi/sd_zbc.c
+++ b/drivers/scsi/sd_zbc.c
@@ -601,7 +601,7 @@ int sd_zbc_read_zones(struct scsi_disk *sdkp, struct queue_limits *lim,
if (sdkp->device->type != TYPE_ZBC)
return 0;
- lim->zoned = true;
+ lim->features |= BLK_FEAT_ZONED;
/*
* Per ZBC and ZAC specifications, writes in sequential write required
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index cd27b66cbacc00..bdc30c1fb1b57b 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -313,6 +313,9 @@ enum {
/* supports I/O polling */
BLK_FEAT_POLL = (1u << 9),
+
+ /* is a zoned device */
+ BLK_FEAT_ZONED = (1u << 10),
};
/*
@@ -320,7 +323,7 @@ enum {
*/
#define BLK_FEAT_INHERIT_MASK \
(BLK_FEAT_WRITE_CACHE | BLK_FEAT_FUA | BLK_FEAT_ROTATIONAL | \
- BLK_FEAT_STABLE_WRITES)
+ BLK_FEAT_STABLE_WRITES | BLK_FEAT_ZONED)
/* internal flags in queue_limits.flags */
enum {
@@ -372,7 +375,6 @@ struct queue_limits {
unsigned char misaligned;
unsigned char discard_misaligned;
unsigned char raid_partial_stripes_expensive;
- bool zoned;
unsigned int max_open_zones;
unsigned int max_active_zones;
@@ -654,7 +656,8 @@ static inline enum rpm_status queue_rpm_status(struct request_queue *q)
static inline bool blk_queue_is_zoned(struct request_queue *q)
{
- return IS_ENABLED(CONFIG_BLK_DEV_ZONED) && q->limits.zoned;
+ return IS_ENABLED(CONFIG_BLK_DEV_ZONED) &&
+ (q->limits.features & BLK_FEAT_ZONED);
}
#ifdef CONFIG_BLK_DEV_ZONED
--
2.43.0
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