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libnvdimm, pfn: fix pfn seed creation

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Similar to btt, plant a new pfn seed when the existing one is activated.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2015-12-13 11:41:36 -08:00
parent a34d5e8a6a
commit 2dc43331e3
3 changed files with 20 additions and 0 deletions
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12
drivers/nvdimm/namespace_devs.c
View File

@ -1707,6 +1707,18 @@ void nd_region_create_blk_seed(struct nd_region *nd_region)
nd_device_register(nd_region->ns_seed);
}
void nd_region_create_pfn_seed(struct nd_region *nd_region)
{
WARN_ON(!is_nvdimm_bus_locked(&nd_region->dev));
nd_region->pfn_seed = nd_pfn_create(nd_region);
/*
* Seed creation failures are not fatal, provisioning is simply
* disabled until memory becomes available
*/
if (!nd_region->pfn_seed)
dev_err(&nd_region->dev, "failed to create pfn namespace\n");
}
void nd_region_create_btt_seed(struct nd_region *nd_region)
{
WARN_ON(!is_nvdimm_bus_locked(&nd_region->dev));

1
drivers/nvdimm/nd-core.h
View File

@ -52,6 +52,7 @@ void nd_region_probe_success(struct nvdimm_bus *nvdimm_bus, struct device *dev);
struct nd_region;
void nd_region_create_blk_seed(struct nd_region *nd_region);
void nd_region_create_btt_seed(struct nd_region *nd_region);
void nd_region_create_pfn_seed(struct nd_region *nd_region);
void nd_region_disable(struct nvdimm_bus *nvdimm_bus, struct device *dev);
int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus);
void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus);

7
drivers/nvdimm/region_devs.c
View File

@ -490,6 +490,13 @@ static void nd_region_notify_driver_action(struct nvdimm_bus *nvdimm_bus,
nd_region_create_blk_seed(nd_region);
nvdimm_bus_unlock(dev);
}
if (is_nd_pfn(dev) && probe) {
nd_region = to_nd_region(dev->parent);
nvdimm_bus_lock(dev);
if (nd_region->pfn_seed == dev)
nd_region_create_pfn_seed(nd_region);
nvdimm_bus_unlock(dev);
}
}
void nd_region_probe_success(struct nvdimm_bus *nvdimm_bus, struct device *dev)