Re: [PATCH 0/2] [REGRESSION v4.19-20] mm: shrinkers are now way too aggressive

2019-01-29 Thread Roman Gushchin
Hi, Dave! Instead of reverting (which will bring back the memcg memory leak), can you, please, try Rik's patch: https://lkml.org/lkml/2019/1/28/1865 ? It should protect small cgroups from being scanned too hard by the memory pressure, however keeping the pressure big enough to avoid memory leaks.

[PATCH 0/2] [REGRESSION v4.19-20] mm: shrinkers are now way too aggressive

2019-01-29 Thread Dave Chinner
Hi mm-folks, TL;DR: these two commits break system wide memory VFS cache reclaim balance badly, cause severe performance regressions in stable kernels and they need to be reverted ASAP. For background, let's start with the bug reports that have come from desktop users on 4.19 stable kernels. Firs