On Thu, 24 Aug 2017 10:00:49 +0200 Vlastimil Babka <vbabka@xxxxxxx> wrote: > > Even if a > > shrinker has a mistake, VM will have big trouble like infinite loop. > > We could fake 0 as 1 or something, at least. If the shrinker returns sc->nr_scanned==0 then that's a buggy shrinker - it should return SHRINK_STOP in that case. Only a single shrinker (i915) presently uses sc->nr_scanned and that one gets it right. I think it's OK - there's a limit to how far we should go defending against buggy kernel code, surely. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
