libnvdimm: pmem label sets and namespace instantiation.
A complete label set is a PMEM-label per-dimm per-interleave-set where
all the UUIDs match and the interleave set cookie matches the hosting
interleave set.
Present sysfs attributes for manipulation of a PMEM-namespace's
'alt_name', 'uuid', and 'size' attributes. A later patch will make
these settings persistent by writing back the label.
Note that PMEM allocations grow forwards from the start of an interleave
set (lowest dimm-physical-address (DPA)). BLK-namespaces that alias
with a PMEM interleave set will grow allocations backward from the
highest DPA.
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>
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index ffb43ca..fddc3f2 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -97,6 +97,8 @@
rc = nd_drv->probe(dev);
if (rc == 0)
nd_region_probe_success(nvdimm_bus, dev);
+ else
+ nd_region_disable(nvdimm_bus, dev);
nvdimm_bus_probe_end(nvdimm_bus);
dev_dbg(&nvdimm_bus->dev, "%s.probe(%s) = %d\n", dev->driver->name,
@@ -381,8 +383,10 @@
}
EXPORT_SYMBOL_GPL(nd_cmd_out_size);
-static void wait_nvdimm_bus_probe_idle(struct nvdimm_bus *nvdimm_bus)
+void wait_nvdimm_bus_probe_idle(struct device *dev)
{
+ struct nvdimm_bus *nvdimm_bus = walk_to_nvdimm_bus(dev);
+
do {
if (nvdimm_bus->probe_active == 0)
break;
@@ -402,7 +406,7 @@
return 0;
nvdimm_bus = walk_to_nvdimm_bus(&nvdimm->dev);
- wait_nvdimm_bus_probe_idle(nvdimm_bus);
+ wait_nvdimm_bus_probe_idle(&nvdimm_bus->dev);
if (atomic_read(&nvdimm->busy))
return -EBUSY;