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.
WARNING: multiple messages have this Message-ID (diff)
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.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"aart@kvack.org"> aart@kvack.org </a>
next prev parent reply other threads:[~2005-05-19 8:24 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-18 19:57 [PATCH] prevent NULL mmap in topdown model Rik van Riel
2005-05-18 19:57 ` Rik van Riel
2005-05-18 20:38 ` Arjan van de Ven
2005-05-18 20:38 ` Arjan van de Ven
2005-05-18 21:16 ` Rik van Riel
2005-05-18 21:16 ` Rik van Riel
2005-05-18 22:41 ` Linus Torvalds
2005-05-18 22:41 ` Linus Torvalds
2005-05-18 22:39 ` Linus Torvalds
2005-05-18 22:39 ` Linus Torvalds
2005-05-19 2:25 ` Rik van Riel
2005-05-19 2:25 ` Rik van Riel
2005-05-19 2:47 ` Linus Torvalds
2005-05-19 2:47 ` Linus Torvalds
2005-05-19 6:46 ` Chris Wright
2005-05-19 6:46 ` Chris Wright
2005-05-19 8:15 ` Arjan van de Ven
2005-05-19 8:15 ` Arjan van de Ven
2005-05-19 8:23 ` Chris Wright [this message]
2005-05-19 8:23 ` Chris Wright
2005-05-29 21:16 ` Greg Stark
2005-05-29 21:16 ` Greg Stark
2005-05-31 16:56 ` Chris Wright
2005-05-31 16:56 ` Chris Wright
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20050519082345.GI23013@shell0.pdx.osdl.net \
--to=chrisw@osdl.org \
--cc=arjan@infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=riel@redhat.com \
--cc=torvalds@osdl.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.