From: Damien Le Moal <damien.lemoal@xxxxxxx>
commit 314d48dd224897e35ddcaf5a1d7d133b5adddeb7
Rename nvme_block_nr() to nvme_sect_to_lba() and use SECTOR_SHIFT
instead of its hard coded value 9. Also add a comment to decribe this
helper.
Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx>
Signed-off-by: Revanth Rajashekar <revanth.rajashekar@xxxxxxxxx>
---
drivers/nvme/host/core.c | 6 +++---
drivers/nvme/host/nvme.h | 7 +++++--
2 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 071b63146..f7d32eeee 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -633,7 +633,7 @@ static blk_status_t nvme_setup_discard(struct nvme_ns *ns, struct request *req,
}
__rq_for_each_bio(bio, req) {
- u64 slba = nvme_block_nr(ns, bio->bi_iter.bi_sector);
+ u64 slba = nvme_sect_to_lba(ns, bio->bi_iter.bi_sector);
u32 nlb = bio->bi_iter.bi_size >> ns->lba_shift;
if (n < segments) {
@@ -674,7 +674,7 @@ 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_block_nr(ns, blk_rq_pos(req)));
+ 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);
cmnd->write_zeroes.control = 0;
@@ -698,7 +698,7 @@ static inline blk_status_t nvme_setup_rw(struct nvme_ns *ns,
cmnd->rw.opcode = (rq_data_dir(req) ? nvme_cmd_write : nvme_cmd_read);
cmnd->rw.nsid = cpu_to_le32(ns->head->ns_id);
- cmnd->rw.slba = cpu_to_le64(nvme_block_nr(ns, blk_rq_pos(req)));
+ 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);
if (req_op(req) == REQ_OP_WRITE && ctrl->nr_streams)
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index ed0226086..f93ba2da1 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -421,9 +421,12 @@ static inline int nvme_reset_subsystem(struct nvme_ctrl *ctrl)
return ctrl->ops->reg_write32(ctrl, NVME_REG_NSSR, 0x4E564D65);
}
-static inline u64 nvme_block_nr(struct nvme_ns *ns, sector_t sector)
+/*
+ * 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)
{
- return (sector >> (ns->lba_shift - 9));
+ return sector >> (ns->lba_shift - SECTOR_SHIFT);
}
static inline void nvme_end_request(struct request *req, __le16 status,
--
2.17.1
--
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