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| author |   Damien Le Moal <damien.lemoal@wdc.com> | 2019-10-21 12:40:04 +0900 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-07 08:01:30 +0200 |
| commit | 03f4f85bbd7dc2bb9ebb5e96937bbf778d89b586 (patch) | |
| tree | d3fa870b9d5f1f021e0f42b50ac97ed84e6bb62c | |
| parent | nvme: Cleanup and rename nvme_block_nr() (diff) | |
| download | wireguard-linux-03f4f85bbd7dc2bb9ebb5e96937bbf778d89b586.tar.xz wireguard-linux-03f4f85bbd7dc2bb9ebb5e96937bbf778d89b586.zip | |
nvme: Introduce nvme_lba_to_sect()
commit e08f2ae850929d40e66268ee47e443e7ea56eeb7 upstream.
Introduce the new helper function nvme_lba_to_sect() to convert a device
logical block number to a 512B sector number. Use this new helper in
obvious places, cleaning up the code.
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Revanth Rajashekar <revanth.rajashekar@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/nvme/host/core.c | 14 | ||||
| -rw-r--r-- | drivers/nvme/host/nvme.h | 8 |
2 files changed, 15 insertions, 7 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index acad37cd894f..ec89f780cbf7 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1682,7 +1682,7 @@ static void nvme_init_integrity(struct gendisk *disk, u16 ms, u8 pi_type) static void nvme_set_chunk_size(struct nvme_ns *ns) { - u32 chunk_size = (((u32)ns->noiob) << (ns->lba_shift - 9)); + u32 chunk_size = nvme_lba_to_sect(ns, ns->noiob); blk_queue_chunk_sectors(ns->queue, rounddown_pow_of_two(chunk_size)); } @@ -1719,8 +1719,7 @@ static void nvme_config_discard(struct gendisk *disk, struct nvme_ns *ns) static void nvme_config_write_zeroes(struct gendisk *disk, struct nvme_ns *ns) { - u32 max_sectors; - unsigned short bs = 1 << ns->lba_shift; + u64 max_blocks; if (!(ns->ctrl->oncs & NVME_CTRL_ONCS_WRITE_ZEROES) || (ns->ctrl->quirks & NVME_QUIRK_DISABLE_WRITE_ZEROES)) @@ -1736,11 +1735,12 @@ static void nvme_config_write_zeroes(struct gendisk *disk, struct nvme_ns *ns) * nvme_init_identify() if available. */ if (ns->ctrl->max_hw_sectors == UINT_MAX) - max_sectors = ((u32)(USHRT_MAX + 1) * bs) >> 9; + max_blocks = (u64)USHRT_MAX + 1; else - max_sectors = ((u32)(ns->ctrl->max_hw_sectors + 1) * bs) >> 9; + max_blocks = ns->ctrl->max_hw_sectors + 1; - blk_queue_max_write_zeroes_sectors(disk->queue, max_sectors); + blk_queue_max_write_zeroes_sectors(disk->queue, + nvme_lba_to_sect(ns, max_blocks)); } static int nvme_report_ns_ids(struct nvme_ctrl *ctrl, unsigned int nsid, @@ -1774,7 +1774,7 @@ static bool nvme_ns_ids_equal(struct nvme_ns_ids *a, struct nvme_ns_ids *b) static void nvme_update_disk_info(struct gendisk *disk, struct nvme_ns *ns, struct nvme_id_ns *id) { - sector_t capacity = le64_to_cpu(id->nsze) << (ns->lba_shift - 9); + sector_t capacity = nvme_lba_to_sect(ns, le64_to_cpu(id->nsze)); unsigned short bs = 1 << ns->lba_shift; u32 atomic_bs, phys_bs, io_opt; diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index 0660408f5ee6..0010a2b01a4f 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -437,6 +437,14 @@ static inline u64 nvme_sect_to_lba(struct nvme_ns *ns, sector_t sector) return sector >> (ns->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) +{ + return lba << (ns->lba_shift - SECTOR_SHIFT); +} + static inline void nvme_end_request(struct request *req, __le16 status, union nvme_result result) { |