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

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.


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