[PATCH v6 1/6] nvme: move ns id info to struct nvme_ns_head

Daniel Wagner
2023-12-18T17:00:15Z

Move the namesapce info to struct nvme_ns_head, because it's the same
for all associated namespaces.

Note: with multipathing enabled the PI information is shared between all
paths. If a path is using a different PI configuration it will overwrite
the previous settings. This is obviously not correct and such
configuration will be rejected in future. For the time being we expect
a correctly configured storage.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Daniel Wagner <dwagner@suse.de>
---
drivers/nvme/host/core.c | 80 ++++++++++++++++++++-------------------
drivers/nvme/host/ioctl.c | 8 ++--
drivers/nvme/host/nvme.h | 28 +++++++-------
drivers/nvme/host/rdma.c | 2 +-
drivers/nvme/host/zns.c | 17 +++++----
5 files changed, 69 insertions(+), 66 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 590cd4f097c2..f9a70c70d95c 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -312,12 +312,12 @@ static void nvme_log_error(struct request *req)
struct nvme_request *nr = nvme_req(req);

if (ns) {
- pr_err_ratelimited("%s: %s(0x%x) @ LBA %llu, %llu blocks, %s (sct 0x%x / sc 0x%x) %s%s\n",
+ pr_err_ratelimited("%s: %s(0x%x) @ LBA %llu, %u blocks, %s (sct 0x%x / sc 0x%x) %s%s\n",
ns->disk ? ns->disk->disk_name : "?",
nvme_get_opcode_str(nr->cmd->common.opcode),
nr->cmd->common.opcode,
- (unsigned long long)nvme_sect_to_lba(ns, blk_rq_pos(req)),
- (unsigned long long)blk_rq_bytes(req) >> ns->lba_shift,
+ nvme_sect_to_lba(ns, blk_rq_pos(req)),
+ blk_rq_bytes(req) >> ns->head->lba_shift,
nvme_get_error_status_str(nr->status),
nr->status >> 8 & 7, /* Status Code Type */
nr->status & 0xff, /* Status Code */
@@ -792,7 +792,7 @@ static blk_status_t nvme_setup_discard(struct nvme_ns *ns, struct request *req,

if (queue_max_discard_segments(req->q) == 1) {
u64 slba = nvme_sect_to_lba(ns, blk_rq_pos(req));
- u32 nlb = blk_rq_sectors(req) >> (ns->lba_shift - 9);
+ u32 nlb = blk_rq_sectors(req) >> (ns->head->lba_shift - 9);

range[0].cattr = cpu_to_le32(0);
range[0].nlb = cpu_to_le32(nlb);
@@ -801,7 +801,7 @@ static blk_status_t nvme_setup_discard(struct nvme_ns *ns, struct request *req,
} else {
__rq_for_each_bio(bio, req) {
u64 slba = nvme_sect_to_lba(ns, bio->bi_iter.bi_sector);
- u32 nlb = bio->bi_iter.bi_size >> ns->lba_shift;
+ u32 nlb = bio->bi_iter.bi_size >> ns->head->lba_shift;

if (n < segments) {
range[n].cattr = cpu_to_le32(0);
@@ -839,7 +839,7 @@ static void nvme_set_ref_tag(struct nvme_ns *ns, struct nvme_command *cmnd,
u64 ref48;

/* both rw and write zeroes share the same reftag format */
- switch (ns->guard_type) {
+ switch (ns->head->guard_type) {
case NVME_NVM_NS_16B_GUARD:
cmnd->rw.reftag = cpu_to_le32(t10_pi_ref_tag(req));
break;
@@ -869,15 +869,16 @@ static inline blk_status_t nvme_setup_write_zeroes(struct nvme_ns *ns,
cmnd->write_zeroes.slba =
cpu_to_le64(nvme_sect_to_lba(ns, blk_rq_pos(req)));
cmnd->write_zeroes.length =
- cpu_to_le16((blk_rq_bytes(req) >> ns->lba_shift) - 1);
+ cpu_to_le16((blk_rq_bytes(req) >> ns->head->lba_shift) - 1);

- if (!(req->cmd_flags & REQ_NOUNMAP) && (ns->features & NVME_NS_DEAC))
+ if (!(req->cmd_flags & REQ_NOUNMAP) &&
+ (ns->head->features & NVME_NS_DEAC))
cmnd->write_zeroes.control |= cpu_to_le16(NVME_WZ_DEAC);

if (nvme_ns_has_pi(ns)) {
cmnd->write_zeroes.control |= cpu_to_le16(NVME_RW_PRINFO_PRACT);

- switch (ns->pi_type) {
+ switch (ns->head->pi_type) {
case NVME_NS_DPS_PI_TYPE1:
case NVME_NS_DPS_PI_TYPE2:
nvme_set_ref_tag(ns, cmnd, req);
@@ -910,12 +911,13 @@ static inline blk_status_t nvme_setup_rw(struct nvme_ns *ns,
cmnd->rw.cdw3 = 0;
cmnd->rw.metadata = 0;
cmnd->rw.slba = cpu_to_le64(nvme_sect_to_lba(ns, blk_rq_pos(req)));
- cmnd->rw.length = cpu_to_le16((blk_rq_bytes(req) >> ns->lba_shift) - 1);
+ cmnd->rw.length =
+ cpu_to_le16((blk_rq_bytes(req) >> ns->head->lba_shift) - 1);
cmnd->rw.reftag = 0;
cmnd->rw.apptag = 0;
cmnd->rw.appmask = 0;

- if (ns->ms) {
+ if (ns->head->ms) {
/*
* If formated with metadata, the block layer always provides a
* metadata buffer if CONFIG_BLK_DEV_INTEGRITY is enabled. Else
@@ -928,7 +930,7 @@ static inline blk_status_t nvme_setup_rw(struct nvme_ns *ns,
control |= NVME_RW_PRINFO_PRACT;
}

- switch (ns->pi_type) {
+ switch (ns->head->pi_type) {
case NVME_NS_DPS_PI_TYPE3:
control |= NVME_RW_PRINFO_PRCHK_GUARD;
break;
@@ -1663,9 +1665,9 @@ static void nvme_init_integrity(struct gendisk *disk, struct nvme_ns *ns,
{
struct blk_integrity integrity = { };

- switch (ns->pi_type) {
+ switch (ns->head->pi_type) {
case NVME_NS_DPS_PI_TYPE3:
- switch (ns->guard_type) {
+ switch (ns->head->guard_type) {
case NVME_NVM_NS_16B_GUARD:
integrity.profile = &t10_pi_type3_crc;
integrity.tag_size = sizeof(u16) + sizeof(u32);
@@ -1683,7 +1685,7 @@ static void nvme_init_integrity(struct gendisk *disk, struct nvme_ns *ns,
break;
case NVME_NS_DPS_PI_TYPE1:
case NVME_NS_DPS_PI_TYPE2:
- switch (ns->guard_type) {
+ switch (ns->head->guard_type) {
case NVME_NVM_NS_16B_GUARD:
integrity.profile = &t10_pi_type1_crc;
integrity.tag_size = sizeof(u16);
@@ -1704,7 +1706,7 @@ static void nvme_init_integrity(struct gendisk *disk, struct nvme_ns *ns,
break;
}

- integrity.tuple_size = ns->ms;
+ integrity.tuple_size = ns->head->ms;
blk_integrity_register(disk, &integrity);
blk_queue_max_integrity_segments(disk->queue, max_integrity_segments);
}
@@ -1763,11 +1765,11 @@ static int nvme_init_ms(struct nvme_ns *ns, struct nvme_id_ns *id)
int ret = 0;
u32 elbaf;

- ns->pi_size = 0;
- ns->ms = le16_to_cpu(id->lbaf[lbaf].ms);
+ ns->head->pi_size = 0;
+ ns->head->ms = le16_to_cpu(id->lbaf[lbaf].ms);
if (!(ctrl->ctratt & NVME_CTRL_ATTR_ELBAS)) {
- ns->pi_size = sizeof(struct t10_pi_tuple);
- ns->guard_type = NVME_NVM_NS_16B_GUARD;
+ ns->head->pi_size = sizeof(struct t10_pi_tuple);
+ ns->head->guard_type = NVME_NVM_NS_16B_GUARD;
goto set_pi;
}

@@ -1790,13 +1792,13 @@ static int nvme_init_ms(struct nvme_ns *ns, struct nvme_id_ns *id)
if (nvme_elbaf_sts(elbaf))
goto free_data;

- ns->guard_type = nvme_elbaf_guard_type(elbaf);
- switch (ns->guard_type) {
+ ns->head->guard_type = nvme_elbaf_guard_type(elbaf);
+ switch (ns->head->guard_type) {
case NVME_NVM_NS_64B_GUARD:
- ns->pi_size = sizeof(struct crc64_pi_tuple);
+ ns->head->pi_size = sizeof(struct crc64_pi_tuple);
break;
case NVME_NVM_NS_16B_GUARD:
- ns->pi_size = sizeof(struct t10_pi_tuple);
+ ns->head->pi_size = sizeof(struct t10_pi_tuple);
break;
default:
break;
@@ -1805,10 +1807,10 @@ static int nvme_init_ms(struct nvme_ns *ns, struct nvme_id_ns *id)
free_data:
kfree(nvm);
set_pi:
- if (ns->pi_size && (first || ns->ms == ns->pi_size))
- ns->pi_type = id->dps & NVME_NS_DPS_PI_MASK;
+ if (ns->head->pi_size && (first || ns->head->ms == ns->head->pi_size))
+ ns->head->pi_type = id->dps & NVME_NS_DPS_PI_MASK;
else
- ns->pi_type = 0;
+ ns->head->pi_type = 0;

return ret;
}
@@ -1822,8 +1824,8 @@ static int nvme_configure_metadata(struct nvme_ns *ns, struct nvme_id_ns *id)
if (ret)
return ret;

- ns->features &= ~(NVME_NS_METADATA_SUPPORTED | NVME_NS_EXT_LBAS);
- if (!ns->ms || !(ctrl->ops->flags & NVME_F_METADATA_SUPPORTED))
+ ns->head->features &= ~(NVME_NS_METADATA_SUPPORTED | NVME_NS_EXT_LBAS);
+ if (!ns->head->ms || !(ctrl->ops->flags & NVME_F_METADATA_SUPPORTED))
return 0;

if (ctrl->ops->flags & NVME_F_FABRICS) {
@@ -1835,7 +1837,7 @@ static int nvme_configure_metadata(struct nvme_ns *ns, struct nvme_id_ns *id)
if (WARN_ON_ONCE(!(id->flbas & NVME_NS_FLBAS_META_EXT)))
return 0;

- ns->features |= NVME_NS_EXT_LBAS;
+ ns->head->features |= NVME_NS_EXT_LBAS;

/*
* The current fabrics transport drivers support namespace
@@ -1847,7 +1849,7 @@ static int nvme_configure_metadata(struct nvme_ns *ns, struct nvme_id_ns *id)
* gain the ability to use other metadata formats.
*/
if (ctrl->max_integrity_segments && nvme_ns_has_pi(ns))
- ns->features |= NVME_NS_METADATA_SUPPORTED;
+ ns->head->features |= NVME_NS_METADATA_SUPPORTED;
} else {
/*
* For PCIe controllers, we can't easily remap the separate
@@ -1856,9 +1858,9 @@ static int nvme_configure_metadata(struct nvme_ns *ns, struct nvme_id_ns *id)
* We allow extended LBAs for the passthrough interface, though.
*/
if (id->flbas & NVME_NS_FLBAS_META_EXT)
- ns->features |= NVME_NS_EXT_LBAS;
+ ns->head->features |= NVME_NS_EXT_LBAS;
else
- ns->features |= NVME_NS_METADATA_SUPPORTED;
+ ns->head->features |= NVME_NS_METADATA_SUPPORTED;
}
return 0;
}
@@ -1885,14 +1887,14 @@ static void nvme_update_disk_info(struct gendisk *disk,
struct nvme_ns *ns, struct nvme_id_ns *id)
{
sector_t capacity = nvme_lba_to_sect(ns, le64_to_cpu(id->nsze));
- u32 bs = 1U << ns->lba_shift;
+ u32 bs = 1U << ns->head->lba_shift;
u32 atomic_bs, phys_bs, io_opt = 0;

/*
* The block layer can't support LBA sizes larger than the page size
* yet, so catch this early and don't allow block I/O.
*/
- if (ns->lba_shift > PAGE_SHIFT) {
+ if (ns->head->lba_shift > PAGE_SHIFT) {
capacity = 0;
bs = (1 << 9);
}
@@ -1935,9 +1937,9 @@ static void nvme_update_disk_info(struct gendisk *disk,
* I/O to namespaces with metadata except when the namespace supports
* PI, as it can strip/insert in that case.
*/
- if (ns->ms) {
+ if (ns->head->ms) {
if (IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY) &&
- (ns->features & NVME_NS_METADATA_SUPPORTED))
+ (ns->head->features & NVME_NS_METADATA_SUPPORTED))
nvme_init_integrity(disk, ns,
ns->ctrl->max_integrity_segments);
else if (!nvme_ns_has_pi(ns))
@@ -2031,7 +2033,7 @@ static int nvme_update_ns_info_block(struct nvme_ns *ns,

blk_mq_freeze_queue(ns->disk->queue);
lbaf = nvme_lbaf_index(id->flbas);
- ns->lba_shift = id->lbaf[lbaf].ds;
+ ns->head->lba_shift = id->lbaf[lbaf].ds;
nvme_set_queue_limits(ns->ctrl, ns->queue);

ret = nvme_configure_metadata(ns, id);
@@ -2057,7 +2059,7 @@ static int nvme_update_ns_info_block(struct nvme_ns *ns,
* do not return zeroes.
*/
if ((id->dlfeat & 0x7) == 0x1 && (id->dlfeat & (1 << 3)))
- ns->features |= NVME_NS_DEAC;
+ ns->head->features |= NVME_NS_DEAC;
set_disk_ro(ns->disk, nvme_ns_is_readonly(ns, info));
set_bit(NVME_NS_READY, &ns->flags);
blk_mq_unfreeze_queue(ns->disk->queue);
diff --git a/drivers/nvme/host/ioctl.c b/drivers/nvme/host/ioctl.c
index 32c9bcf491a3..883621748318 100644
--- a/drivers/nvme/host/ioctl.c
+++ b/drivers/nvme/host/ioctl.c
@@ -224,10 +224,10 @@ static int nvme_submit_io(struct nvme_ns *ns, struct nvme_user_io __user *uio)
return -EINVAL;
}

- length = (io.nblocks + 1) << ns->lba_shift;
+ length = (io.nblocks + 1) << ns->head->lba_shift;

if ((io.control & NVME_RW_PRINFO_PRACT) &&
- ns->ms == sizeof(struct t10_pi_tuple)) {
+ ns->head->ms == sizeof(struct t10_pi_tuple)) {
/*
* Protection information is stripped/inserted by the
* controller.
@@ -237,11 +237,11 @@ static int nvme_submit_io(struct nvme_ns *ns, struct nvme_user_io __user *uio)
meta_len = 0;
metadata = NULL;
} else {
- meta_len = (io.nblocks + 1) * ns->ms;
+ meta_len = (io.nblocks + 1) * ns->head->ms;
metadata = nvme_to_user_ptr(io.metadata);
}

- if (ns->features & NVME_NS_EXT_LBAS) {
+ if (ns->head->features & NVME_NS_EXT_LBAS) {
length += meta_len;
meta_len = 0;
} else if (meta_len) {
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 39a90b7cb125..7b3c93d80eb1 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -446,6 +446,17 @@ struct nvme_ns_head {
bool shared;
int instance;
struct nvme_effects_log *effects;
+ int lba_shift;
+ u16 ms;
+ u16 pi_size;
+ u16 sgs;
+ u32 sws;
+ u8 pi_type;
+ u8 guard_type;
+#ifdef CONFIG_BLK_DEV_ZONED
+ u64 zsze;
+#endif
+ unsigned long features;

struct cdev cdev;
struct device cdev_device;
@@ -487,17 +498,6 @@ struct nvme_ns {
struct kref kref;
struct nvme_ns_head *head;

- int lba_shift;
- u16 ms;
- u16 pi_size;
- u16 sgs;
- u32 sws;
- u8 pi_type;
- u8 guard_type;
-#ifdef CONFIG_BLK_DEV_ZONED
- u64 zsze;
-#endif
- unsigned long features;
unsigned long flags;
#define NVME_NS_REMOVING 0
#define NVME_NS_ANA_PENDING 2
@@ -514,7 +514,7 @@ struct nvme_ns {
/* NVMe ns supports metadata actions by the controller (generate/strip) */
static inline bool nvme_ns_has_pi(struct nvme_ns *ns)
{
- return ns->pi_type && ns->ms == ns->pi_size;
+ return ns->head->pi_type && ns->head->ms == ns->head->pi_size;
}

struct nvme_ctrl_ops {
@@ -648,7 +648,7 @@ static inline int nvme_reset_subsystem(struct nvme_ctrl *ctrl)
*/
static inline u64 nvme_sect_to_lba(struct nvme_ns *ns, sector_t sector)
{
- return sector >> (ns->lba_shift - SECTOR_SHIFT);
+ return sector >> (ns->head->lba_shift - SECTOR_SHIFT);
}

/*
@@ -656,7 +656,7 @@ static inline u64 nvme_sect_to_lba(struct nvme_ns *ns, sector_t sector)
*/
static inline sector_t nvme_lba_to_sect(struct nvme_ns *ns, u64 lba)
{
- return lba << (ns->lba_shift - SECTOR_SHIFT);
+ return lba << (ns->head->lba_shift - SECTOR_SHIFT);
}

/*
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 6d178d555920..be2a3e5884c0 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -1418,7 +1418,7 @@ static int nvme_rdma_map_sg_pi(struct nvme_rdma_queue *queue,
goto mr_put;

nvme_rdma_set_sig_attrs(blk_get_integrity(bio->bi_bdev->bd_disk), c,
- req->mr->sig_attrs, ns->pi_type);
+ req->mr->sig_attrs, ns->head->pi_type);
nvme_rdma_set_prot_checks(c, &req->mr->sig_attrs->check_mask);

ib_update_fast_reg_key(req->mr, ib_inc_rkey(req->mr->rkey));
diff --git a/drivers/nvme/host/zns.c b/drivers/nvme/host/zns.c
index ec8557810c21..fa9e8f664ae7 100644
--- a/drivers/nvme/host/zns.c
+++ b/drivers/nvme/host/zns.c
@@ -11,7 +11,7 @@ int nvme_revalidate_zones(struct nvme_ns *ns)
{
struct request_queue *q = ns->queue;

- blk_queue_chunk_sectors(q, ns->zsze);
+ blk_queue_chunk_sectors(q, ns->head->zsze);
blk_queue_max_zone_append_sectors(q, ns->ctrl->max_zone_append);

return blk_revalidate_disk_zones(ns->disk, NULL);
@@ -99,11 +99,12 @@ int nvme_update_zone_info(struct nvme_ns *ns, unsigned lbaf)
goto free_data;
}

- ns->zsze = nvme_lba_to_sect(ns, le64_to_cpu(id->lbafe[lbaf].zsze));
- if (!is_power_of_2(ns->zsze)) {
+ ns->head->zsze =
+ nvme_lba_to_sect(ns, le64_to_cpu(id->lbafe[lbaf].zsze));
+ if (!is_power_of_2(ns->head->zsze)) {
dev_warn(ns->ctrl->device,
"invalid zone size:%llu for namespace:%u\n",
- ns->zsze, ns->head->ns_id);
+ ns->head->zsze, ns->head->ns_id);
status = -ENODEV;
goto free_data;
}
@@ -128,7 +129,7 @@ static void *nvme_zns_alloc_report_buffer(struct nvme_ns *ns,
sizeof(struct nvme_zone_descriptor);

nr_zones = min_t(unsigned int, nr_zones,
- get_capacity(ns->disk) >> ilog2(ns->zsze));
+ get_capacity(ns->disk) >> ilog2(ns->head->zsze));

bufsize = sizeof(struct nvme_zone_report) +
nr_zones * sizeof(struct nvme_zone_descriptor);
@@ -162,7 +163,7 @@ static int nvme_zone_parse_entry(struct nvme_ns *ns,

zone.type = BLK_ZONE_TYPE_SEQWRITE_REQ;
zone.cond = entry->zs >> 4;
- zone.len = ns->zsze;
+ zone.len = ns->head->zsze;
zone.capacity = nvme_lba_to_sect(ns, le64_to_cpu(entry->zcap));
zone.start = nvme_lba_to_sect(ns, le64_to_cpu(entry->zslba));
if (zone.cond == BLK_ZONE_COND_FULL)
@@ -196,7 +197,7 @@ int nvme_ns_report_zones(struct nvme_ns *ns, sector_t sector,
c.zmr.zrasf = NVME_ZRASF_ZONE_REPORT_ALL;
c.zmr.pr = NVME_REPORT_ZONE_PARTIAL;

- sector &= ~(ns->zsze - 1);
+ sector &= ~(ns->head->zsze - 1);
while (zone_idx < nr_zones && sector < get_capacity(ns->disk)) {
memset(report, 0, buflen);

@@ -220,7 +221,7 @@ int nvme_ns_report_zones(struct nvme_ns *ns, sector_t sector,
zone_idx++;
}

- sector += ns->zsze * nz;
+ sector += ns->head->zsze * nz;
}

if (zone_idx > 0)
--
2.43.0