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authorDan Williams <dan.j.williams@intel.com>2015-06-09 16:09:36 -0400
committerDan Williams <dan.j.williams@intel.com>2015-06-24 21:24:10 -0400
commit4a826c83db4edc040da3a66dbefd53f0cfcf457d (patch)
treeff26d9df31e46d3f7d8ff12fa288982460beacc3 /include/linux/nd.h
parenteaf961536e1622ad21247ac8d44acd48ba65566e (diff)
libnvdimm: namespace indices: read and validate
This on media label format [1] consists of two index blocks followed by an array of labels. None of these structures are ever updated in place. A sequence number tracks the current active index and the next one to write, while labels are written to free slots. +------------+ | | | nsindex0 | | | +------------+ | | | nsindex1 | | | +------------+ | label0 | +------------+ | label1 | +------------+ | | ....nslot... | | +------------+ | labelN | +------------+ After reading valid labels, store the dpa ranges they claim into per-dimm resource trees. [1]: http://pmem.io/documents/NVDIMM_Namespace_Spec.pdf Cc: Neil Brown <neilb@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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