[v9,5/7] libnvdimm/label: Remove the dpa align check
diff mbox series

Message ID 20190905154603.10349-6-aneesh.kumar@linux.ibm.com
State Accepted
Commit 047e0eff1f150220d615c35c36af225f3e1ed057
Headers show
  • Mark the namespace disabled on pfn superblock mismatch
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Commit Message

Aneesh Kumar K.V Sept. 5, 2019, 3:46 p.m. UTC
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@linux.ibm.com>
 drivers/nvdimm/label.c | 5 -----
 1 file changed, 5 deletions(-)

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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;