[PATCH v6 2/6] nvme: refactor ns info helpers

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

Pass in the nvme_ns_head pointer directly. This reduces the necessity on
the caller side have the nvme_ns data structure present. Thus we can
refactor the caller side in the next step as well.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Daniel Wagner <dwagner@suse.de>
---
drivers/nvme/host/core.c | 36 +++++++++++++++++++++---------------
drivers/nvme/host/nvme.h | 12 ++++++------
drivers/nvme/host/rdma.c | 2 +-
drivers/nvme/host/zns.c | 12 ++++++------
4 files changed, 34 insertions(+), 28 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index f9a70c70d95c..7be1db8caff4 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -316,7 +316,7 @@ static void nvme_log_error(struct request *req)
ns->disk ? ns->disk->disk_name : "?",
nvme_get_opcode_str(nr->cmd->common.opcode),
nr->cmd->common.opcode,
- nvme_sect_to_lba(ns, blk_rq_pos(req)),
+ nvme_sect_to_lba(ns->head, 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 */
@@ -372,9 +372,12 @@ static inline enum nvme_disposition nvme_decide_disposition(struct request *req)
static inline void nvme_end_req_zoned(struct request *req)
{
if (IS_ENABLED(CONFIG_BLK_DEV_ZONED) &&
- req_op(req) == REQ_OP_ZONE_APPEND)
- req->__sector = nvme_lba_to_sect(req->q->queuedata,
+ req_op(req) == REQ_OP_ZONE_APPEND) {
+ struct nvme_ns *ns = req->q->queuedata;
+
+ req->__sector = nvme_lba_to_sect(ns->head,
le64_to_cpu(nvme_req(req)->result.u64));
+ }
}

static inline void nvme_end_req(struct request *req)
@@ -791,7 +794,7 @@ 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));
+ u64 slba = nvme_sect_to_lba(ns->head, blk_rq_pos(req));
u32 nlb = blk_rq_sectors(req) >> (ns->head->lba_shift - 9);

range[0].cattr = cpu_to_le32(0);
@@ -800,7 +803,8 @@ static blk_status_t nvme_setup_discard(struct nvme_ns *ns, struct request *req,
n = 1;
} else {
__rq_for_each_bio(bio, req) {
- u64 slba = nvme_sect_to_lba(ns, bio->bi_iter.bi_sector);
+ u64 slba = nvme_sect_to_lba(ns->head,
+ bio->bi_iter.bi_sector);
u32 nlb = bio->bi_iter.bi_size >> ns->head->lba_shift;

if (n < segments) {
@@ -867,7 +871,7 @@ static inline blk_status_t nvme_setup_write_zeroes(struct nvme_ns *ns,
cmnd->write_zeroes.opcode = nvme_cmd_write_zeroes;
cmnd->write_zeroes.nsid = cpu_to_le32(ns->head->ns_id);
cmnd->write_zeroes.slba =
- cpu_to_le64(nvme_sect_to_lba(ns, blk_rq_pos(req)));
+ cpu_to_le64(nvme_sect_to_lba(ns->head, blk_rq_pos(req)));
cmnd->write_zeroes.length =
cpu_to_le16((blk_rq_bytes(req) >> ns->head->lba_shift) - 1);

@@ -875,7 +879,7 @@ static inline blk_status_t nvme_setup_write_zeroes(struct nvme_ns *ns,
(ns->head->features & NVME_NS_DEAC))
cmnd->write_zeroes.control |= cpu_to_le16(NVME_WZ_DEAC);

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

switch (ns->head->pi_type) {
@@ -910,7 +914,8 @@ static inline blk_status_t nvme_setup_rw(struct nvme_ns *ns,
cmnd->rw.cdw2 = 0;
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.slba =
+ cpu_to_le64(nvme_sect_to_lba(ns->head, blk_rq_pos(req)));
cmnd->rw.length =
cpu_to_le16((blk_rq_bytes(req) >> ns->head->lba_shift) - 1);
cmnd->rw.reftag = 0;
@@ -925,7 +930,7 @@ static inline blk_status_t nvme_setup_rw(struct nvme_ns *ns,
* namespace capacity to zero to prevent any I/O.
*/
if (!blk_integrity_rq(req)) {
- if (WARN_ON_ONCE(!nvme_ns_has_pi(ns)))
+ if (WARN_ON_ONCE(!nvme_ns_has_pi(ns->head)))
return BLK_STS_NOTSUPP;
control |= NVME_RW_PRINFO_PRACT;
}
@@ -1723,8 +1728,9 @@ static void nvme_config_discard(struct gendisk *disk, struct nvme_ns *ns)
struct request_queue *queue = disk->queue;
u32 size = queue_logical_block_size(queue);

- if (ctrl->dmrsl && ctrl->dmrsl <= nvme_sect_to_lba(ns, UINT_MAX))
- ctrl->max_discard_sectors = nvme_lba_to_sect(ns, ctrl->dmrsl);
+ if (ctrl->dmrsl && ctrl->dmrsl <= nvme_sect_to_lba(ns->head, UINT_MAX))
+ ctrl->max_discard_sectors =
+ nvme_lba_to_sect(ns->head, ctrl->dmrsl);

if (ctrl->max_discard_sectors == 0) {
blk_queue_max_discard_sectors(queue, 0);
@@ -1848,7 +1854,7 @@ static int nvme_configure_metadata(struct nvme_ns *ns, struct nvme_id_ns *id)
* Note, this check will need to be modified if any drivers
* gain the ability to use other metadata formats.
*/
- if (ctrl->max_integrity_segments && nvme_ns_has_pi(ns))
+ if (ctrl->max_integrity_segments && nvme_ns_has_pi(ns->head))
ns->head->features |= NVME_NS_METADATA_SUPPORTED;
} else {
/*
@@ -1886,7 +1892,7 @@ static void nvme_set_queue_limits(struct nvme_ctrl *ctrl,
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));
+ sector_t capacity = nvme_lba_to_sect(ns->head, le64_to_cpu(id->nsze));
u32 bs = 1U << ns->head->lba_shift;
u32 atomic_bs, phys_bs, io_opt = 0;

@@ -1942,7 +1948,7 @@ static void nvme_update_disk_info(struct gendisk *disk,
(ns->head->features & NVME_NS_METADATA_SUPPORTED))
nvme_init_integrity(disk, ns,
ns->ctrl->max_integrity_segments);
- else if (!nvme_ns_has_pi(ns))
+ else if (!nvme_ns_has_pi(ns->head))
capacity = 0;
}

@@ -1973,7 +1979,7 @@ static void nvme_set_chunk_sectors(struct nvme_ns *ns, struct nvme_id_ns *id)
is_power_of_2(ctrl->max_hw_sectors))
iob = ctrl->max_hw_sectors;
else
- iob = nvme_lba_to_sect(ns, le16_to_cpu(id->noiob));
+ iob = nvme_lba_to_sect(ns->head, le16_to_cpu(id->noiob));

if (!iob)
return;
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 7b3c93d80eb1..9e5b9e779fbd 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -512,9 +512,9 @@ struct nvme_ns {
};

/* NVMe ns supports metadata actions by the controller (generate/strip) */
-static inline bool nvme_ns_has_pi(struct nvme_ns *ns)
+static inline bool nvme_ns_has_pi(struct nvme_ns_head *head)
{
- return ns->head->pi_type && ns->head->ms == ns->head->pi_size;
+ return head->pi_type && head->ms == head->pi_size;
}

struct nvme_ctrl_ops {
@@ -646,17 +646,17 @@ static inline int nvme_reset_subsystem(struct nvme_ctrl *ctrl)
/*
* Convert a 512B sector number to a device logical block number.
*/
-static inline u64 nvme_sect_to_lba(struct nvme_ns *ns, sector_t sector)
+static inline u64 nvme_sect_to_lba(struct nvme_ns_head *head, sector_t sector)
{
- return sector >> (ns->head->lba_shift - SECTOR_SHIFT);
+ return sector >> (head->lba_shift - SECTOR_SHIFT);
}

/*
* Convert a device logical block number to a 512B sector number.
*/
-static inline sector_t nvme_lba_to_sect(struct nvme_ns *ns, u64 lba)
+static inline sector_t nvme_lba_to_sect(struct nvme_ns_head *head, u64 lba)
{
- return lba << (ns->head->lba_shift - SECTOR_SHIFT);
+ return lba << (head->lba_shift - SECTOR_SHIFT);
}

/*
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index be2a3e5884c0..bc90ec3c51b0 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -2012,7 +2012,7 @@ static blk_status_t nvme_rdma_queue_rq(struct blk_mq_hw_ctx *hctx,
queue->pi_support &&
(c->common.opcode == nvme_cmd_write ||
c->common.opcode == nvme_cmd_read) &&
- nvme_ns_has_pi(ns))
+ nvme_ns_has_pi(ns->head))
req->use_sig_mr = true;
else
req->use_sig_mr = false;
diff --git a/drivers/nvme/host/zns.c b/drivers/nvme/host/zns.c
index fa9e8f664ae7..ded52ab05424 100644
--- a/drivers/nvme/host/zns.c
+++ b/drivers/nvme/host/zns.c
@@ -100,7 +100,7 @@ int nvme_update_zone_info(struct nvme_ns *ns, unsigned lbaf)
}

ns->head->zsze =
- nvme_lba_to_sect(ns, le64_to_cpu(id->lbafe[lbaf].zsze));
+ nvme_lba_to_sect(ns->head, 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",
@@ -164,12 +164,12 @@ 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->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));
+ zone.capacity = nvme_lba_to_sect(ns->head, le64_to_cpu(entry->zcap));
+ zone.start = nvme_lba_to_sect(ns->head, le64_to_cpu(entry->zslba));
if (zone.cond == BLK_ZONE_COND_FULL)
zone.wp = zone.start + zone.len;
else
- zone.wp = nvme_lba_to_sect(ns, le64_to_cpu(entry->wp));
+ zone.wp = nvme_lba_to_sect(ns->head, le64_to_cpu(entry->wp));

return cb(&zone, idx, data);
}
@@ -201,7 +201,7 @@ int nvme_ns_report_zones(struct nvme_ns *ns, sector_t sector,
while (zone_idx < nr_zones && sector < get_capacity(ns->disk)) {
memset(report, 0, buflen);

- c.zmr.slba = cpu_to_le64(nvme_sect_to_lba(ns, sector));
+ c.zmr.slba = cpu_to_le64(nvme_sect_to_lba(ns->head, sector));
ret = nvme_submit_sync_cmd(ns->queue, &c, report, buflen);
if (ret) {
if (ret > 0)
@@ -240,7 +240,7 @@ blk_status_t nvme_setup_zone_mgmt_send(struct nvme_ns *ns, struct request *req,

c->zms.opcode = nvme_cmd_zone_mgmt_send;
c->zms.nsid = cpu_to_le32(ns->head->ns_id);
- c->zms.slba = cpu_to_le64(nvme_sect_to_lba(ns, blk_rq_pos(req)));
+ c->zms.slba = cpu_to_le64(nvme_sect_to_lba(ns->head, blk_rq_pos(req)));
c->zms.zsa = action;

if (req_op(req) == REQ_OP_ZONE_RESET_ALL)
--
2.43.0