On Sun, 30 Sep 2018, Matthew Wilcox wrote: > > And the patch in mainline has Christoph's ack... > > I'm not saying there's a problem with the patch. It's that the rationale > for backporting doesn't make any damned sense. There's something going > on that nobody understands. This patch is probably masking an underlying > problem that will pop back up and bite us again someday. Right. That is why I raised the issue. I do not see any harm in backporting but I do not think it fixes the real issue which may be in concurrent use of page struct fields that are overlapping.
