From: Chris Wright <chrisw@osdl.org>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Chris Wright <chrisw@osdl.org>,
Linus Torvalds <torvalds@osdl.org>,
Rik van Riel <riel@redhat.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] prevent NULL mmap in topdown model
Date: Thu, 19 May 2005 01:23:45 -0700 [thread overview]
Message-ID: <20050519082345.GI23013@shell0.pdx.osdl.net> (raw)
In-Reply-To: <1116490511.6027.25.camel@laptopd505.fenrus.org>
* Arjan van de Ven (arjan@infradead.org) wrote:
> On Wed, 2005-05-18 at 23:46 -0700, Chris Wright wrote:
> > I gave it a quick and simple test. Worked as expected. Last page got
> > mapped at 0x1000, leaving first page unmapped. Of course, either with
> > MAP_FIXED or w/out MAP_FIXED but proper hint (like -1) you can still
> > map first page. This isn't to say I was extra creative in testing.
>
> sure. Making it *impossible* to mmap that page is bad. People should be
> able to do that if they really want to, just doing it if they don't ask
> for it is bad.
Heh, that was actually my intended point ;-) At any rate, you made it
clearer, thanks.
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next prev parent reply other threads:[~2005-05-19 8:23 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-18 19:57 Rik van Riel
2005-05-18 20:38 ` Arjan van de Ven
2005-05-18 21:16 ` Rik van Riel
2005-05-18 22:41 ` Linus Torvalds
2005-05-18 22:39 ` Linus Torvalds
2005-05-19 2:25 ` Rik van Riel
2005-05-19 2:47 ` Linus Torvalds
2005-05-19 6:46 ` Chris Wright
2005-05-19 8:15 ` Arjan van de Ven
2005-05-19 8:23 ` Chris Wright [this message]
2005-05-29 21:16 ` Greg Stark
2005-05-31 16:56 ` Chris Wright
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