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| author | Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> | 2021-01-11 20:26:16 -0800 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2021-02-02 10:26:11 +0100 |
| commit | 193fcf371f9e3705c14a0bf1d4bfc44af0f7c124 (patch) | |
| tree | e03131156e5412e1ac1db076e861fe2606d86083 /drivers/nvme | |
| parent | 3c7b224f1956ed232b24ed2eb2c54e4476c6acb2 (diff) | |
| download | linux-193fcf371f9e3705c14a0bf1d4bfc44af0f7c124.tar.bz2 | |
nvmet: add lba to sect conversion helpers
In this preparation patch, we add helpers to convert lbas to sectors &
sectors to lba. This is needed to eliminate code duplication in the ZBD
backend.
Use these helpers in the block device backend.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/target/io-cmd-bdev.c | 8 | ||||
| -rw-r--r-- | drivers/nvme/target/nvmet.h | 10 |
2 files changed, 13 insertions, 5 deletions
diff --git a/drivers/nvme/target/io-cmd-bdev.c b/drivers/nvme/target/io-cmd-bdev.c index 125dde3f410e..23095bdfce06 100644 --- a/drivers/nvme/target/io-cmd-bdev.c +++ b/drivers/nvme/target/io-cmd-bdev.c @@ -256,8 +256,7 @@ static void nvmet_bdev_execute_rw(struct nvmet_req *req) if (is_pci_p2pdma_page(sg_page(req->sg))) op |= REQ_NOMERGE; - sector = le64_to_cpu(req->cmd->rw.slba); - sector <<= (req->ns->blksize_shift - 9); + sector = nvmet_lba_to_sect(req->ns, req->cmd->rw.slba); if (req->transfer_len <= NVMET_MAX_INLINE_DATA_LEN) { bio = &req->b.inline_bio; @@ -345,7 +344,7 @@ static u16 nvmet_bdev_discard_range(struct nvmet_req *req, int ret; ret = __blkdev_issue_discard(ns->bdev, - le64_to_cpu(range->slba) << (ns->blksize_shift - 9), + nvmet_lba_to_sect(ns, range->slba), le32_to_cpu(range->nlb) << (ns->blksize_shift - 9), GFP_KERNEL, 0, bio); if (ret && ret != -EOPNOTSUPP) { @@ -414,8 +413,7 @@ static void nvmet_bdev_execute_write_zeroes(struct nvmet_req *req) if (!nvmet_check_transfer_len(req, 0)) return; - sector = le64_to_cpu(write_zeroes->slba) << - (req->ns->blksize_shift - 9); + sector = nvmet_lba_to_sect(req->ns, write_zeroes->slba); nr_sector = (((sector_t)le16_to_cpu(write_zeroes->length) + 1) << (req->ns->blksize_shift - 9)); diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index 592763732065..8776dd1a0490 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -603,4 +603,14 @@ static inline bool nvmet_ns_has_pi(struct nvmet_ns *ns) return ns->pi_type && ns->metadata_size == sizeof(struct t10_pi_tuple); } +static inline __le64 nvmet_sect_to_lba(struct nvmet_ns *ns, sector_t sect) +{ + return cpu_to_le64(sect >> (ns->blksize_shift - SECTOR_SHIFT)); +} + +static inline sector_t nvmet_lba_to_sect(struct nvmet_ns *ns, __le64 lba) +{ + return le64_to_cpu(lba) << (ns->blksize_shift - SECTOR_SHIFT); +} + #endif /* _NVMET_H */ |