Re: [PATCH 2/2] Futex non-page-pinning fix

[Andrew Morton]

William Lee Irwin III <wli@xxxxxxxxxxxxxx> wrote:
>
>  William Lee Irwin III <wli@xxxxxxxxxxxxxx> wrote:
>  >> except you have the usual intractable disaster
>  >>  whenever file-backed pages are anonymized via truncate().
> 
>  On Tue, Aug 26, 2003 at 03:44:58AM -0700, Andrew Morton wrote:
>  > They only arose due to races between major faults and truncate.
>  > That got fixed.
> 
>  Then it sounds relatively easy to localize the search structure (if you
>  care to do so),

The "group of all processes which could potentially (or really do) share a
chunk of anon memory" thing sounds tricky.

> apart from a policy decision about what on earth to do
>  about waiters on truncated futexes.

erk, screwed.


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