Commit 8ca24353 authored by Dan Williams's avatar Dan Williams

libnvdimm: fix namespace seed creation

A new BLK namespace "seed" device is created whenever the current seed
is successfully probed.  However, if that namespace is assigned to a BTT
it may never directly experience a successful probe as it is a
subordinate device to a BTT configuration.

The effect of the current code is that no new namespaces can be
instantiated, after the seed namespace, to consume available BLK DPA
capacity.  Fix this by treating a successful BTT probe event as a
successful probe event for the backing namespace.
Reported-by: default avatarNicholas Moulin <nicholas.w.moulin@linux.intel.com>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 52721d9d
......@@ -458,10 +458,15 @@ static void nd_region_notify_driver_action(struct nvdimm_bus *nvdimm_bus,
nvdimm_bus_unlock(dev);
}
if (is_nd_btt(dev) && probe) {
struct nd_btt *nd_btt = to_nd_btt(dev);
nd_region = to_nd_region(dev->parent);
nvdimm_bus_lock(dev);
if (nd_region->btt_seed == dev)
nd_region_create_btt_seed(nd_region);
if (nd_region->ns_seed == &nd_btt->ndns->dev &&
is_nd_blk(dev->parent))
nd_region_create_blk_seed(nd_region);
nvdimm_bus_unlock(dev);
}
}
......
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