From bf9bccc14c05dae8caba29df6187c731710f5380 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 17 Jun 2015 17:14:46 -0400 Subject: libnvdimm: pmem label sets and namespace instantiation. A complete label set is a PMEM-label per-dimm per-interleave-set where all the UUIDs match and the interleave set cookie matches the hosting interleave set. Present sysfs attributes for manipulation of a PMEM-namespace's 'alt_name', 'uuid', and 'size' attributes. A later patch will make these settings persistent by writing back the label. Note that PMEM allocations grow forwards from the start of an interleave set (lowest dimm-physical-address (DPA)). BLK-namespaces that alias with a PMEM interleave set will grow allocations backward from the highest DPA. Cc: Greg KH Cc: Neil Brown Acked-by: Christoph Hellwig Signed-off-by: Dan Williams --- include/linux/libnvdimm.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux/libnvdimm.h') diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h index 1b627b109360..c130972e08c4 100644 --- a/include/linux/libnvdimm.h +++ b/include/linux/libnvdimm.h @@ -41,10 +41,20 @@ typedef int (*ndctl_fn)(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm, unsigned int cmd, void *buf, unsigned int buf_len); +struct nd_namespace_label; +struct nvdimm_drvdata; struct nd_mapping { struct nvdimm *nvdimm; + struct nd_namespace_label **labels; u64 start; u64 size; + /* + * @ndd is for private use at region enable / disable time for + * get_ndd() + put_ndd(), all other nd_mapping to ndd + * conversions use to_ndd() which respects enabled state of the + * nvdimm. + */ + struct nvdimm_drvdata *ndd; }; struct nvdimm_bus_descriptor { -- cgit v1.2.2