On Tue, May 31, 2016 at 05:01:16PM -0400, Tejun Heo wrote: > So, WQ_MEM_RECLAIM on a shared workqueue doesn't make much sense. > That flag guarantees single concurrency level to the workqueue. How > would multiple users of a shared workqueue coordinate around that? > What prevents one events_mem_unbound user from depending on, say, > draining lru? If lru draining requires a rescuer to guarantee forward > progress under memory pressure, that rescuer worker must be dedicated > for that purpose and can't be shared.
Gotchya, that fixes my understanding on the rescuer thread operation. In this case, could we revive your previous proposal for consideration?
