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Commit 2dc43331 authored by Dan Williams's avatar Dan Williams
Browse files

libnvdimm, pfn: fix pfn seed creation 



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

Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent a34d5e8a

drivers/nvdimm/namespace_devs.c

+12 −0
Original line number Diff line number Diff line
@@ -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));

drivers/nvdimm/nd-core.h

+1 −0
Original line number Diff line number Diff line
@@ -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);

drivers/nvdimm/region_devs.c

+7 −0
Original line number Diff line number Diff line
@@ -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)