Messages in this thread |  | | Date | Tue, 20 May 2003 00:33:53 +0100 | From | Jamie Lokier <> | Subject | Re: [patch] futex API cleanups, futex-api-cleanup-2.5.69-A2 |
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Ingo Molnar wrote: > > > - start the phasing out of FUTEX_FD. This i believe is quite unclean and > > > unrobust, [...] > > 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.
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