tree 5e7930d002412222645eca18e77343969262f75c
parent 527e9316f8ec44bd53d90fb9f611fa7ffff52bb9
author Tejun Heo <tj@kernel.org> 1449503937 -0500
committer Tejun Heo <tj@kernel.org> 1449592176 -0500

workqueue: warn if memory reclaim tries to flush !WQ_MEM_RECLAIM workqueue

Task or work item involved in memory reclaim trying to flush a
non-WQ_MEM_RECLAIM workqueue or one of its work items can lead to
deadlock.  Trigger WARN_ONCE() if such conditions are detected.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>