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>
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index aa57503..09f419d 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -566,6 +566,11 @@
struct scatterlist sg[0];
};
+static inline u64 nvme_block_nr(struct nvme_ns *ns, sector_t sector)
+{
+ return (sector >> (ns->lba_shift - 9));
+}
+
/**
* nvme_free_iod - frees an nvme_iod
* @dev: The device that the I/O was submitted to