On Mon, Nov 20, 2017 at 10:25:26AM +0100, Michal Hocko wrote: > On Fri 17-11-17 09:35:21, Christoph Hellwig wrote: > > On Tue, Nov 14, 2017 at 06:37:42AM +0900, Tetsuo Handa wrote: > > > Since do_shrink_slab() can reschedule, we cannot protect shrinker_list > > > using one RCU section. But using atomic_inc()/atomic_dec() for each > > > do_shrink_slab() call will not impact so much. > > > > But you could use SRCU.. > > Davidlohr has tried that already > http://lkml.kernel.org/r/1434398602.1903.15.ca...@stgolabs.net > and failed. Doing SRCU inside core kernel is not seen with a great > support...
I can't actually find any objection in that thread. What's the problem Davidlohr ran into?
