Waiman Long 37a3cf4abc cgroup/cpuset: Wake up cpuset_attach_wq tasks in cpuset_cancel_attach() ... commit ba9182a896 upstream. After a successful cpuset_can_attach() call which increments the attach_in_progress flag, either cpuset_cancel_attach() or cpuset_attach() will be called later. In cpuset_attach(), tasks in cpuset_attach_wq, if present, will be woken up at the end. That is not the case in cpuset_cancel_attach(). So missed wakeup is possible if the attach operation is somehow cancelled. Fix that by doing the wakeup in cpuset_cancel_attach() as well. Fixes: e44193d39e ("cpuset: let hotplug propagation work wait for task attaching") Signed-off-by: Waiman Long <longman@redhat.com> Reviewed-by: Michal Koutný <mkoutny@suse.com> Cc: stable@vger.kernel.org # v3.11+ Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-04-20 12:10:27 +02:00
..
cgroup-internal.h	memcg: fix possible use-after-free in memcg_write_event_control()	2022-12-14 11:31:57 +01:00
cgroup-v1.c	cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all()	2022-09-23 14:17:00 +02:00
cgroup.c	cgroup: Fix threadgroup_rwsem <-> cpus_read_lock() deadlock	2022-09-15 11:32:04 +02:00
cpuset.c	cgroup/cpuset: Wake up cpuset_attach_wq tasks in cpuset_cancel_attach()	2023-04-20 12:10:27 +02:00
debug.c	kernel: cgroup: fix misuse of %x	2019-05-06 08:47:48 -07:00
freezer.c	cgroup: freezer: don't change task and cgroups status unnecessarily	2019-11-07 07:38:41 -08:00
legacy_freezer.c	cgroup: rename freezer.c into legacy_freezer.c	2019-04-19 11:26:48 -07:00
Makefile	cgroup: cgroup v2 freezer	2019-04-19 11:26:48 -07:00
namespace.c	nsproxy: add struct nsset	2020-05-09 13:57:12 +02:00
pids.c	clone3: allow spawning processes into cgroups	2020-02-12 17:57:51 -05:00
rdma.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 451	2019-06-19 17:09:08 +02:00
rstat.c	cgroup: Fix rootcg cpu.stat guest double counting	2021-11-18 14:04:13 +01:00