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| author | Dan Williams <dan.j.williams@intel.com> | 2015-05-01 20:34:01 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2015-06-25 04:24:10 +0300 |
| commit | 1b40e09a1232de537b193fa1b6b3ef16d3a1e397 (patch) | |
| tree | 48111c53fa3125b7d1f46d0f01b9448acbee62d0 /drivers/nvdimm/nd.h | |
| parent | bf9bccc14c05dae8caba29df6187c731710f5380 (diff) | |
| download | linux-1b40e09a1232de537b193fa1b6b3ef16d3a1e397.tar.xz | |
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 'drivers/nvdimm/nd.h')
| -rw-r--r-- | drivers/nvdimm/nd.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h index 03e610cd9f43..9b021b626202 100644 --- a/drivers/nvdimm/nd.h +++ b/drivers/nvdimm/nd.h @@ -73,6 +73,7 @@ static inline struct nd_namespace_index *to_next_namespace_index( struct nd_region { struct device dev; + struct ida ns_ida; struct device *ns_seed; u16 ndr_mappings; u64 ndr_size; @@ -102,6 +103,10 @@ void nd_device_register(struct device *dev); void nd_device_unregister(struct device *dev, enum nd_async_mode mode); int nd_uuid_store(struct device *dev, u8 **uuid_out, const char *buf, size_t len); +ssize_t nd_sector_size_show(unsigned long current_lbasize, + const unsigned long *supported, char *buf); +ssize_t nd_sector_size_store(struct device *dev, const char *buf, + unsigned long *current_lbasize, const unsigned long *supported); int __init nvdimm_init(void); int __init nd_region_init(void); void nvdimm_exit(void); |