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Date: Wed, 18 Sep 2002 16:39:48 -0300 (BRT)
From: Rik van Riel <riel@conectiva.com.br>
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To: Mark_H_Johnson@raytheon.com
Cc: Andrew Morton <akpm@digeo.com>, <linux-kernel@vger.kernel.org>,
       <linux-mm@kvack.org>, <owner-linux-mm@kvack.org>
Subject: Re: [PATCH] recognize MAP_LOCKED in mmap() call
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On Wed, 18 Sep 2002 Mark_H_Johnson@raytheon.com wrote:
> Andrew Morton wrote:
> >(SuS really only anticipates that mmap needs to look at prior mlocks
> >in force against the address range.  It also says
> >
> >     Process memory locking does apply to shared memory regions,
> >
> >and we don't do that either.  I think we should; can't see why SuS
> >requires this.)
>
> Let me make sure I read what you said correctly. Does this mean that
> Linux 2.4 (or 2.5) kernels do not lock shared memory regions if a
> process uses mlockall?

But it does.  Linux won't evict memory that's MLOCKed...

cheers,

Rik
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