On Wed, Oct 09, 2019 at 02:21:12PM +1100, Dave Chinner wrote: > + if ((reclaim_state->deferred_objects > > + sc->nr_scanned - nr_scanned) && > + (reclaim_state->deferred_objects > > + reclaim_state->scanned_objects)) { > + wait_iff_congested(BLK_RW_ASYNC, HZ/50); Unfortunately, Jens broke wait_iff_congested() recently, and doesn't plan to fix it. We need to come up with another way to estimate congestion.