On Tue, Nov 14, 2017 at 08:21:00AM +0100, Michal Hocko wrote: > On Tue 14-11-17 10:45:49, Minchan Kim wrote: > [...] > > Anyway, I think Wang Nan's patch is already broken. > > http://lkml.kernel.org/r/%3c20171107095453.179940-1-wangn...@huawei.com%3E > > > > Because unmap_page_range(ie, zap_pte_range) can flush TLB forcefully > > and free pages. However, the architecture code for TLB flush cannot > > flush at all by wrong fullmm so other threads can write freed-page. > > I am not sure I understand what you mean. How is that any different from > any other explicit partial madvise call?
Argh, I misread his code. Sorry for that.
