diff options
Diffstat (limited to 'drivers/nvdimm/region_devs.c')
| -rw-r--r-- | drivers/nvdimm/region_devs.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c index 2cfb3f74bcbf..482ee3e4e04a 100644 --- a/drivers/nvdimm/region_devs.c +++ b/drivers/nvdimm/region_devs.c @@ -345,11 +345,35 @@ static ssize_t btt_seed_show(struct device *dev, } static DEVICE_ATTR_RO(btt_seed); +static ssize_t read_only_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct nd_region *nd_region = to_nd_region(dev); + + return sprintf(buf, "%d\n", nd_region->ro); +} + +static ssize_t read_only_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t len) +{ + bool ro; + int rc = strtobool(buf, &ro); + struct nd_region *nd_region = to_nd_region(dev); + + if (rc) + return rc; + + nd_region->ro = ro; + return len; +} +static DEVICE_ATTR_RW(read_only); + static struct attribute *nd_region_attributes[] = { &dev_attr_size.attr, &dev_attr_nstype.attr, &dev_attr_mappings.attr, &dev_attr_btt_seed.attr, + &dev_attr_read_only.attr, &dev_attr_set_cookie.attr, &dev_attr_available_size.attr, &dev_attr_namespace_seed.attr, @@ -641,6 +665,7 @@ static struct nd_region *nd_region_create(struct nvdimm_bus *nvdimm_bus, struct device *dev; void *region_buf; unsigned int i; + int ro = 0; for (i = 0; i < ndr_desc->num_mappings; i++) { struct nd_mapping *nd_mapping = &ndr_desc->nd_mapping[i]; @@ -652,6 +677,9 @@ static struct nd_region *nd_region_create(struct nvdimm_bus *nvdimm_bus, return NULL; } + + if (nvdimm->flags & NDD_UNARMED) + ro = 1; } if (dev_type == &nd_blk_device_type) { @@ -707,6 +735,7 @@ static struct nd_region *nd_region_create(struct nvdimm_bus *nvdimm_bus, nd_region->provider_data = ndr_desc->provider_data; nd_region->nd_set = ndr_desc->nd_set; nd_region->num_lanes = ndr_desc->num_lanes; + nd_region->ro = ro; ida_init(&nd_region->ns_ida); ida_init(&nd_region->btt_ida); dev = &nd_region->dev; |