linux-kernel - [PATCH] libnvdimm, namespace: record 'lbasize' for pmem namespaces

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Date:   Wed, 05 Jul 2017 13:59:52 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     linux-nvdimm@...ts.01.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] libnvdimm, namespace: record 'lbasize' for pmem namespaces

Commit f979b13c3cc5 "libnvdimm, label: honor the lba size specified in
v1.2 labels") neglected to update the 'lbasize' in the label when the
namespace sector_size attribute was written. We need this value in the
label for inter-OS / pre-OS compatibility.

Fixes: f979b13c3cc5 ("libnvdimm, label: honor the lba size specified in v1.2 labels")
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
 drivers/nvdimm/label.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c
index 922b68718a1a..87796f840777 100644
--- a/drivers/nvdimm/label.c
+++ b/drivers/nvdimm/label.c
@@ -660,6 +660,7 @@ static int __pmem_label_update(struct nd_region *nd_region,
 	nd_label->position = __cpu_to_le16(pos);
 	nd_label->isetcookie = __cpu_to_le64(cookie);
 	nd_label->rawsize = __cpu_to_le64(resource_size(res));
+	nd_label->lbasize = __cpu_to_le64(nspm->lbasize);
 	nd_label->dpa = __cpu_to_le64(res->start);
 	nd_label->slot = __cpu_to_le32(slot);
 	if (namespace_label_has(ndd, type_guid))