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authorAneesh Kumar K.V <aneesh.kumar@linux.ibm.com>2019-09-05 18:46:00 +0300
committerDan Williams <dan.j.williams@intel.com>2019-09-06 02:11:14 +0300
commitedbb52c24441ab5203b969eca759483cb533f36d (patch)
tree665648762062a8383fffc6b1e959414f52d330a4 /drivers/nvdimm/pfn.h
parente96f0bf2ec92da2bc9c11b0d69e9086f076e7f0b (diff)
downloadlinux-edbb52c24441ab5203b969eca759483cb533f36d.tar.xz
libnvdimm/pfn_dev: Add page size and struct page size to pfn superblock
This is needed so that pmem probe don't wrongly initialize a namespace which doesn't have enough space reserved for holding struct pages with the current kernel. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Link: https://lore.kernel.org/r/20190905154603.10349-5-aneesh.kumar@linux.ibm.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/pfn.h')
-rw-r--r--drivers/nvdimm/pfn.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/nvdimm/pfn.h b/drivers/nvdimm/pfn.h
index 7381673b7b70..acb19517f678 100644
--- a/drivers/nvdimm/pfn.h
+++ b/drivers/nvdimm/pfn.h
@@ -29,7 +29,10 @@ struct nd_pfn_sb {
/* minor-version-2 record the base alignment of the mapping */
__le32 align;
/* minor-version-3 guarantee the padding and flags are zero */
- u8 padding[4000];
+ /* minor-version-4 record the page size and struct page size */
+ __le32 page_size;
+ __le16 page_struct_size;
+ u8 padding[3994];
__le64 checksum;
};