[PATCH v9 5/7] libnvdimm/label: Remove the dpa align check

Aneesh Kumar K.V
2019-09-05T15:46:01Z

There's no strict requirement why slot_valid() needs to check for page alignment
and it would seem to actively hurt cross-page-size compatibility. Let's
delete the check and rely on checksum validation.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar-tEXmvtCZX7AybS5Ee8rs3A@public.gmane.org>
---
drivers/nvdimm/label.c | 5 -----
1 file changed, 5 deletions(-)

diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c
index 73e197babc2f..47a4828b8b31 100644
--- a/drivers/nvdimm/label.c
+++ b/drivers/nvdimm/label.c
@@ -353,11 +353,6 @@ static bool slot_valid(struct nvdimm_drvdata *ndd,
if (slot != __le32_to_cpu(nd_label->slot))
return false;

- /* check that DPA allocations are page aligned */
- if ((__le64_to_cpu(nd_label->dpa)
- | __le64_to_cpu(nd_label->rawsize)) % SZ_4K)
- return false;
-
/* check checksum */
if (namespace_label_has(ndd, checksum)) {
u64 sum, sum_save;
--
2.21.0