Subject: [RFC PATCH V2 3/3] mm/nvdimm: Use correct #defines instead of opencoding

From: "Aneesh Kumar K.V" <[email-masked]>
Date: Wed, 22 May 2019 13:57:01 +0530

The nfpn related change is needed to fix the kernel message

"number of pfns truncated from 2617344 to 163584"

The change makes sure the nfpns stored in the superblock is right value.

Signed-off-by: Aneesh Kumar K.V <[email-masked]>
---
 drivers/nvdimm/label.c       | 2 +-
 drivers/nvdimm/pfn_devs.c    | 6 +++---
 drivers/nvdimm/region_devs.c | 8 ++++----
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c
index f3d753d3169c..bc6de8fb0153 100644
--- a/drivers/nvdimm/label.c
+++ b/drivers/nvdimm/label.c
@@ -361,7 +361,7 @@ static bool slot_valid(struct nvdimm_drvdata *ndd,
 
 	/* check that DPA allocations are page aligned */
 	if ((__le64_to_cpu(nd_label->dpa)
-				| __le64_to_cpu(nd_label->rawsize)) % SZ_4K)
+				| __le64_to_cpu(nd_label->rawsize)) % PAGE_SIZE)
 		return false;
 
 	/* check checksum */
diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c
index 39fa8cf8ef58..9fc2e514e28a 100644
--- a/drivers/nvdimm/pfn_devs.c
+++ b/drivers/nvdimm/pfn_devs.c
@@ -769,8 +769,8 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn)
 		 * when populating the vmemmap. This *should* be equal to
 		 * PMD_SIZE for most architectures.
 		 */
-		offset = ALIGN(start + reserve + 64 * npfns,
-				max(nd_pfn->align, PMD_SIZE)) - start;
+		offset = ALIGN(start + reserve + sizeof(struct page) * npfns,
+			       max(nd_pfn->align, PMD_SIZE)) - start;
 	} else if (nd_pfn->mode == PFN_MODE_RAM)
 		offset = ALIGN(start + reserve, nd_pfn->align) - start;
 	else
@@ -782,7 +782,7 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn)
 		return -ENXIO;
 	}
 
-	npfns = (size - offset - start_pad - end_trunc) / SZ_4K;
+	npfns = (size - offset - start_pad - end_trunc) / PAGE_SIZE;
 	pfn_sb->mode = cpu_to_le32(nd_pfn->mode);
 	pfn_sb->dataoff = cpu_to_le64(offset);
 	pfn_sb->npfns = cpu_to_le64(npfns);
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index b4ef7d9ff22e..2d8facea5a03 100644
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -994,10 +994,10 @@ static struct nd_region *nd_region_create(struct nvdimm_bus *nvdimm_bus,
 		struct nd_mapping_desc *mapping = &ndr_desc->mapping[i];
 		struct nvdimm *nvdimm = mapping->nvdimm;
 
-		if ((mapping->start | mapping->size) % SZ_4K) {
-			dev_err(&nvdimm_bus->dev, "%s: %s mapping%d is not 4K aligned\n",
-					caller, dev_name(&nvdimm->dev), i);
-
+		if ((mapping->start | mapping->size) % PAGE_SIZE) {
+			dev_err(&nvdimm_bus->dev,
+				"%s: %s mapping%d is not 4K aligned\n",
+				caller, dev_name(&nvdimm->dev), i);
 			return NULL;
 		}
 
-- 
2.21.0