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authorDan Williams <dan.j.williams@intel.com>2015-07-24 23:42:34 -0400
committerDan Williams <dan.j.williams@intel.com>2015-07-25 09:57:56 -0700
commit8ca243536d21ae2d08f61b1c5af4ac3d4bb697e4 (patch)
tree05d157736682a5121f26588a6f4254be1b4da2da
parent52721d9d3334c1cb1f76219a161084094ec634dc (diff)
downloadlinux-stericsson-8ca243536d21ae2d08f61b1c5af4ac3d4bb697e4.tar.gz
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: Nicholas Moulin <nicholas.w.moulin@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
-rw-r--r--drivers/nvdimm/region_devs.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index a5233422f9dc..7384455792bf 100644
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -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);
}
}