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| author |   Dan Williams <dan.j.williams@intel.com> | 2015-05-30 12:36:02 -0400 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2015-06-24 21:24:10 -0400 |
| commit | f524bf271a5cf12a44253194abcf8b6688ff5b9d (patch) | |
| tree | e477ae652183e73a6a3c6fc592046e255d2bfd15 /drivers/nvdimm/label.h | |
| parent | libnvdimm: blk labels and namespace instantiation (diff) | |
| download | linux-dev-f524bf271a5cf12a44253194abcf8b6688ff5b9d.tar.xz linux-dev-f524bf271a5cf12a44253194abcf8b6688ff5b9d.zip | |
libnvdimm: write pmem label set
After 'uuid', 'size', and optionally 'alt_name' have been set to valid
values the labels on the dimms can be updated.
Write procedure is:
1/ Allocate and write new labels in the "next" index
2/ Free the old labels in the working copy
3/ Write the bitmap and the label space on the dimm
4/ Write the index to make the update valid
Label ranges directly mirror the dpa resource values for the given
label_id of the namespace.
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Neil Brown <neilb@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/label.h')
| -rw-r--r-- | drivers/nvdimm/label.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/nvdimm/label.h b/drivers/nvdimm/label.h index 8ee1376526c7..6d376be31937 100644 --- a/drivers/nvdimm/label.h +++ b/drivers/nvdimm/label.h @@ -34,6 +34,7 @@ enum { BTTINFO_MAJOR_VERSION = 1, ND_LABEL_MIN_SIZE = 512 * 129, /* see sizeof_namespace_index() */ ND_LABEL_ID_SIZE = 50, + ND_NSINDEX_INIT = 0x1, }; static const char NSINDEX_SIGNATURE[] = "NAMESPACE_INDEX\0"; @@ -127,4 +128,9 @@ void nd_label_copy(struct nvdimm_drvdata *ndd, struct nd_namespace_index *dst, size_t sizeof_namespace_index(struct nvdimm_drvdata *ndd); int nd_label_active_count(struct nvdimm_drvdata *ndd); struct nd_namespace_label *nd_label_active(struct nvdimm_drvdata *ndd, int n); +u32 nd_label_nfree(struct nvdimm_drvdata *ndd); +struct nd_region; +struct nd_namespace_pmem; +int nd_pmem_namespace_label_update(struct nd_region *nd_region, + struct nd_namespace_pmem *nspm, resource_size_t size); #endif /* __LABEL_H__ */ |