Re: [RFC][PATCH 0/1] Node-based reclaim/migration

Paul Menage
2006-11-30T00:31:23Z

On 11/29/06, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote:
>
> 2. AFAIK, migrating pages without taking write lock of any mm->sem will
> cause problem. anon_vma can be freed while migration.

Hmm, isn't migration just analagous to swapping out and swapping back
in again, but without the actual swapping?

If what you describe is a problem, then wouldn't you have a problem if
you were doing migration on a particular mm structure, but it was
sharing pages with another mm?

Paul