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nfit, libnvdimm, region: export 'position' in mapping info

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It is useful to be able to know the position of a DIMM in an
interleave-set. Consider the case where the order of the DIMMs changes
causing a namespace to be invalidated because the interleave-set cookie no
longer matches. If the before and after state of each DIMM position is
known this state debugged by the system owner.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams
2017-08-04 17:20:16 -07:00
parent 0dd6964306
commit 401c0a19c6
4 changed files with 30 additions and 2 deletions
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include/linux/libnvdimm.h
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@@ -87,6 +87,7 @@ struct nd_mapping_desc {
struct nvdimm *nvdimm;
u64 start;
u64 size;
int position;
};
struct nd_region_desc {