| Message ID | 1437846666.9656.9.camel@intel.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
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); } }
Hi Linus, please pull from... git://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm libnvdimm-fixes ...to receive a minor fix for the libnvdimm subsystem. This is not critical. The problem can be worked around in userspace by putting the namespace temporarily into raw mode (ndctl_namespace_set_raw_mode() from libndctl), but that is awkward for management utilities. I would consider it a candidate for 4.2-stable if it does not make 4.2. The following changes since commit 52721d9d3334c1cb1f76219a161084094ec634dc: Linux 4.2-rc3 (2015-07-19 14:45:02 -0700) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm libnvdimm-fixes for you to fetch changes up to 8ca243536d21ae2d08f61b1c5af4ac3d4bb697e4: libnvdimm: fix namespace seed creation (2015-07-25 09:57:56 -0700) ---------------------------------------------------------------- Dan Williams (1): libnvdimm: fix namespace seed creation drivers/nvdimm/region_devs.c | 5 +++++ 1 file changed, 5 insertions(+) commit 8ca243536d21ae2d08f61b1c5af4ac3d4bb697e4 Author: Dan Williams <dan.j.williams@intel.com> Date: Fri Jul 24 23:42:34 2015 -0400 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>