diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2015-05-01 13:34:01 -0400 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2015-06-24 21:24:10 -0400 |
| commit | 1b40e09a1232de537b193fa1b6b3ef16d3a1e397 (patch) | |
| tree | 48111c53fa3125b7d1f46d0f01b9448acbee62d0 /include/linux/libnvdimm.h | |
| parent | bf9bccc14c05dae8caba29df6187c731710f5380 (diff) | |
libnvdimm: blk labels and namespace instantiation
A blk label set describes a namespace comprised of one or more
discontiguous dpa ranges on a single dimm. They may alias with one or
more pmem interleave sets that include the given dimm.
This is the runtime/volatile configuration infrastructure for sysfs
manipulation of 'alt_name', 'uuid', 'size', and 'sector_size'. A later
patch will make these settings persistent by writing back the label(s).
Unlike pmem namespaces, multiple blk namespaces can be created per
region. Once a blk namespace has been created a new seed device
(unconfigured child of a parent blk region) is instantiated. As long as
a region has 'available_size' != 0 new child namespaces may be created.
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 'include/linux/libnvdimm.h')
| -rw-r--r-- | include/linux/libnvdimm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h index c130972e08c4..a59dca17b3aa 100644 --- a/include/linux/libnvdimm.h +++ b/include/linux/libnvdimm.h @@ -27,6 +27,9 @@ enum { ND_CMD_MAX_ENVELOPE = 16, ND_CMD_ARS_STATUS_MAX = SZ_4K, ND_MAX_MAPPINGS = 32, + + /* mark newly adjusted resources as requiring a label update */ + DPA_RESOURCE_ADJUSTED = 1 << 0, }; extern struct attribute_group nvdimm_bus_attribute_group; |