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| author |   Dan Williams <dan.j.williams@intel.com> | 2015-06-09 16:09:36 -0400 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2015-06-24 21:24:10 -0400 |
| commit | 4a826c83db4edc040da3a66dbefd53f0cfcf457d (patch) | |
| tree | ff26d9df31e46d3f7d8ff12fa288982460beacc3 /include/uapi/linux/ndctl.h | |
| parent | libnvdimm, nfit: add interleave-set state-tracking infrastructure (diff) | |
| download | linux-dev-4a826c83db4edc040da3a66dbefd53f0cfcf457d.tar.xz linux-dev-4a826c83db4edc040da3a66dbefd53f0cfcf457d.zip | |
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>
Diffstat (limited to '')
| -rw-r--r-- | include/uapi/linux/ndctl.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/uapi/linux/ndctl.h b/include/uapi/linux/ndctl.h index 174b6371dcc1..1357a87b8714 100644 --- a/include/uapi/linux/ndctl.h +++ b/include/uapi/linux/ndctl.h @@ -175,7 +175,6 @@ static inline const char *nvdimm_cmd_name(unsigned cmd) #define ND_IOCTL_ARS_STATUS _IOWR(ND_IOCTL, ND_CMD_ARS_STATUS,\ struct nd_cmd_ars_status) - #define ND_DEVICE_DIMM 1 /* nd_dimm: container for "config data" */ #define ND_DEVICE_REGION_PMEM 2 /* nd_region: (parent of PMEM namespaces) */ #define ND_DEVICE_REGION_BLK 3 /* nd_region: (parent of BLK namespaces) */ |