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nfit, libnvdimm: async region scrub workqueue

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Introduce a workqueue that will be used to run address range scrub
asynchronously with the rest of nvdimm device probing.

Userspace still wants notification when probing operations complete, so
introduce a new callback to flush this workqueue when userspace is
awaiting probe completion.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams
2016-02-19 12:16:34 -08:00
parent a61fe6f790
commit 7ae0fa439f
4 changed files with 62 additions and 0 deletions
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9
drivers/nvdimm/core.c
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@@ -298,6 +298,15 @@ static int flush_regions_dimms(struct device *dev, void *data)
static ssize_t wait_probe_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvdimm_bus *nvdimm_bus = to_nvdimm_bus(dev);
struct nvdimm_bus_descriptor *nd_desc = nvdimm_bus->nd_desc;
int rc;
if (nd_desc->flush_probe) {
rc = nd_desc->flush_probe(nd_desc);
if (rc)
return rc;
}
nd_synchronize();
device_for_each_child(dev, NULL, flush_regions_dimms);
return sprintf(buf, "1\n");