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authorWaiman Long <longman@redhat.com>2023-04-11 09:35:57 -0400
committerTejun Heo <tj@kernel.org>2023-04-12 08:23:58 -1000
commitba9182a89626d5f83c2ee4594f55cb9c1e60f0e2 (patch)
treec932a0a2c3b593f3f4d6ffd90bcffbb6dad9cdc9 /block/blk-mq-sched.c
parent57dcd64c7e036299ef526b400a8d12b8a2352f26 (diff)
cgroup/cpuset: Wake up cpuset_attach_wq tasks in cpuset_cancel_attach()
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: e44193d39e8d ("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>
Diffstat (limited to 'block/blk-mq-sched.c')
0 files changed, 0 insertions, 0 deletions