On Tue, 20 May 2003, Rusty Russell wrote:
> In message <20030519233353.GD13706@mail.jlokier.co.uk> you write:
> > Ingo Molnar wrote:
> > > FUTEX_FD is an instant DoS, it allows the pinning of one page per file
> > > descriptor, per thread. With a default limit of 1024 open files per
> > > thread, and 256 threads (on a sane/conservative setup), this means 1 GB of
> > > RAM can be pinned down by a normal unprivileged user.
> >
> > The correct solution [;)] is EP_FUTEX - allow a futex to be specified
> > as the source of an epoll event.
Futexes do support f_op->poll(), isn't it Rusty ? If so, they're supported
by epoll ...
- Davide
-
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This archive was generated by hypermail 2b29 : Fri May 23 2003 - 22:00:38 EST