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| author | Matthew Wilcox <matthew.r.wilcox@intel.com> | 2013-03-27 21:28:22 -0400 |
|---|---|---|
| committer | Matthew Wilcox <matthew.r.wilcox@intel.com> | 2013-04-16 15:05:22 -0400 |
| commit | 063cc6d5591ea9c0631b81ac5c7b829d99738b2f (patch) | |
| tree | 5a61528a0a76394666fdc42d6b51bf576a7c1002 /drivers/block/nvme-core.c | |
| parent | acb7aa0db09b8abd38abeb84334a8a27a52fbb1b (diff) | |
| download | lwn-063cc6d5591ea9c0631b81ac5c7b829d99738b2f.tar.gz lwn-063cc6d5591ea9c0631b81ac5c7b829d99738b2f.zip | |
NVMe: Abstract out sector to block number conversion
Introduce nvme_block_nr() to help convert sectors to block numbers.
This fixes an integer overflow in the SCSI conversion layer, and it's
slightly less typing than opencoding it.
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Acked-by: Keith Busch <keith.busch@intel.com>
Diffstat (limited to 'drivers/block/nvme-core.c')
| -rw-r--r-- | drivers/block/nvme-core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index 32fdfe9a5156..f3ea52aa3e5d 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -477,7 +477,7 @@ static int nvme_submit_discard(struct nvme_queue *nvmeq, struct nvme_ns *ns, range->cattr = cpu_to_le32(0); range->nlb = cpu_to_le32(bio->bi_size >> ns->lba_shift); - range->slba = cpu_to_le64(bio->bi_sector >> (ns->lba_shift - 9)); + range->slba = cpu_to_le64(nvme_block_nr(ns, bio->bi_sector)); memset(cmnd, 0, sizeof(*cmnd)); cmnd->dsm.opcode = nvme_cmd_dsm; @@ -590,7 +590,7 @@ static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns, cmnd->rw.nsid = cpu_to_le32(ns->ns_id); length = nvme_setup_prps(nvmeq->dev, &cmnd->common, iod, length, GFP_ATOMIC); - cmnd->rw.slba = cpu_to_le64(bio->bi_sector >> (ns->lba_shift - 9)); + cmnd->rw.slba = cpu_to_le64(nvme_block_nr(ns, bio->bi_sector)); cmnd->rw.length = cpu_to_le16((length >> ns->lba_shift) - 1); cmnd->rw.control = cpu_to_le16(control); cmnd->rw.dsmgmt = cpu_to_le32(dsmgmt); |