Re: [RFC/PATCH] revoke/frevoke system calls

[Pekka Enberg]

Hi,

Edgar Toernig writes:
> > Urgs, so any user may remove mappings from another process and
> > let it crash?

On 7/22/06, Albert Cahalan <acahalan@xxxxxxxxx> wrote:
> Two good solutions come to mind:
>
> a. substitute the zero page
> b. make the mapping private and touch it as if C-O-W happened

Actually, I think revokeat() and frevoke() should be consistent with
mmap which will make a process go SIGBUS if it attempts to write to
truncated shared mapping.

                                         Pekka
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