Re: locking question: do_mmap(), do_munmap()

Andrea Arcangeli
1999-10-10T21:53:37Z

On Sun, 10 Oct 1999, Alexander Viro wrote:

>I still think that just keeping a cyclic list of pages, grabbing from that
>list before taking mmap_sem _if_ we have a chance for blocking
>__get_free_page(), refilling if the list is empty (prior to down()) and
>returning the page into the list if we didn't use it may be the simplest
>way.

I can't understand very well your plan.

We just have a security pool. We just block only when the pool become low.
To refill our just existing pool we have to walk the vmas. That's the
problem in first place.

Andrea