Re: [RFC v4 0/3] mm: zap pages with read mmap_sem in munmap for large mapping
From: Michal Hocko
Date: Thu Jul 12 2018 - 04:04:23 EST
On Wed 11-07-18 10:04:48, Yang Shi wrote:
[...]
> One approach is to save all the vmas on a separate list, then zap_page_range
> does unmap with this list.
Just detached unmapped vma chain from mm. You can keep the existing
vm_next chain and reuse it.
--
Michal Hocko
SUSE Labs