Re: [RFC v3 PATCH 0/5] mm: zap pages with read mmap_sem in munmap for large mapping

2018-07-02 Thread Michal Hocko
On Sat 30-06-18 06:39:40, Yang Shi wrote: > > Background: > Recently, when we ran some vm scalability tests on machines with large memory, > we ran into a couple of mmap_sem scalability issues when unmapping large > memory > space, please refer to https://lkml.org/lkml/2017/12/14/733 and > https:

[RFC v3 PATCH 0/5] mm: zap pages with read mmap_sem in munmap for large mapping

2018-06-29 Thread Yang Shi
Background: Recently, when we ran some vm scalability tests on machines with large memory, we ran into a couple of mmap_sem scalability issues when unmapping large memory space, please refer to https://lkml.org/lkml/2017/12/14/733 and https://lkml.org/lkml/2018/2/20/576. History: Then akpm sugg