Re: [PATCH] fix race in AF_UNIX

From: Thomas Graf
Date: Mon Jun 18 2007 - 07:01:29 EST


* Miklos Szeredi <miklos@xxxxxxxxxx> 2007-06-18 11:44
> Garbage collection only ever happens, if the app is sending AF_UNIX
> sockets over AF_UNIX sockets. Which is a rather rare case. And which
> is basically why this bug went unnoticed for so long.
>
> So my second patch only affects the performance of _exactly_ those
> apps which might well be bitten by the bug itself.

That's not entirely the truth. It affects all applications using
AF_UNIX sockets while file descriptors are being transfered. I
agree that the performance impact is not severe on most systems
but if file descriptors are being transfered continously by just
a single application it can become rather severe.
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