From: Andrea Arcangeli <andrea@novell.com>
To: Dave Hansen <haveblue@us.ibm.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Andi Kleen <ak@suse.de>, Andrew Morton <akpm@osdl.org>
Subject: Re: fix iounmap and a pageattr memleak (x86 and x86-64)
Date: Wed, 3 Nov 2004 04:05:58 +0100 [thread overview]
Message-ID: <20041103030558.GK3571@dualathlon.random> (raw)
In-Reply-To: <418846E9.1060906@us.ibm.com>
On Tue, Nov 02, 2004 at 06:48:09PM -0800, Dave Hansen wrote:
> It should be enough, but I don't think we want to waste a bitflag for
> something that's only needed for debugging anyway. They're getting
> precious these days. Might as well just bloat the kernel some more when
> the alloc debugging is on.
You can leave the bitflag the end (number 31) under the #ifdef. Using
the bitflag is less likely to create an heisenbug (due different layout
of the ram ;).
> I'll see what I can do to get some backtraces of the __pg_prot(0) &&
> page->mapped cases.
thanks!
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next prev parent reply other threads:[~2004-11-03 3:05 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-02 21:21 Dave Hansen
2004-11-02 22:07 ` Andrea Arcangeli
2004-11-02 22:21 ` Dave Hansen
2004-11-02 22:29 ` Andrew Morton
2004-11-02 22:34 ` Dave Hansen
2004-11-03 0:54 ` Andrea Arcangeli
2004-11-02 22:45 ` Dave Hansen
2004-11-02 23:00 ` Dave Hansen
2004-11-03 1:35 ` Andrea Arcangeli
2004-11-03 1:43 ` Dave Hansen
2004-11-03 2:26 ` Andrea Arcangeli
2004-11-03 2:48 ` Dave Hansen
2004-11-03 3:05 ` Andrea Arcangeli [this message]
2004-11-03 19:37 ` Dave Hansen
2004-11-05 0:02 ` Dave Hansen
2004-11-05 0:40 ` Dave Hansen
2004-11-05 0:53 ` Andrea Arcangeli
2004-11-05 1:55 ` Dave Hansen
2004-11-05 2:08 ` Andrea Arcangeli
2004-11-05 2:23 ` Dave Hansen
2004-11-05 4:03 ` Andrea Arcangeli
2004-11-05 4:20 ` Andrea Arcangeli
2004-11-02 23:04 ` Andrew Morton
2004-11-03 1:40 ` Andrea Arcangeli
2004-11-02 22:34 ` Jason Baron
2004-11-02 23:12 ` Andrea Arcangeli
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