On Mon 2019-07-29 21:23:19, Greg Kroah-Hartman wrote:
From: Dan Williams dan.j.williams@intel.com
commit b70d31d054ee3a6fc1034b9d7fc0ae1e481aa018 upstream.
In preparation for fixing a deadlock between wait_for_bus_probe_idle() and the nvdimm_bus_list_mutex arrange for __nd_ioctl() without nvdimm_bus_list_mutex held. This also unifies the 'dimm' and 'bus' level ioctls into a common nd_ioctl() preamble implementation.
Ok, so this is a preparation patch, not a fix...
Marked for -stable as it is a pre-requisite for a follow-on fix.
...but follow-on fixes are going to be applied for 5.2 but not 4.19. So perhaps this one should not be in 4.19, either?
Best regards, Pavel
(Plus its quite complex).
drivers/nvdimm/bus.c | 94 ++++++++++++++++++++++++++++------------------- drivers/nvdimm/nd-core.h | 3 +