From: Mel Gorman <mgorman@suse.de>
To: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: linux-mm@kvack.org, x86@kernel.org, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH] mm,x86: remove debug_pagealloc_enabled
Date: Fri, 18 Nov 2011 13:37:00 +0000 [thread overview]
Message-ID: <20111118133700.GB20840@suse.de> (raw)
In-Reply-To: <1321458232-6823-1-git-send-email-sgruszka@redhat.com>
On Wed, Nov 16, 2011 at 04:43:52PM +0100, Stanislaw Gruszka wrote:
> When (no)bootmem finish operation, it pass pages to buddy allocator.
> Since debug_pagealloc_enabled is not set, we will do not protect pages,
> what is not what we want with CONFIG_DEBUG_PAGEALLOC=y.
>
> To fix remove debug_pagealloc_enabled. That variable was introduced by
> commit 12d6f21e "x86: do not PSE on CONFIG_DEBUG_PAGEALLOC=y" to get
> more CPA (change page attribude) code testing. But currently we have
> CONFIG_CPA_DEBUG, which test CPA.
>
> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
If no one objects to the impact on CPA testing, I see no problem with
this. I would assume that many bugs related to CPA would be rattled out
by now
Acked-by: Mel Gorman <mgorman@suse.de>
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Mel Gorman
SUSE Labs
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prev parent reply other threads:[~2011-11-18 13:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-16 15:43 [PATCH] mm,x86: remove debug_pagealloc_enabled Stanislaw Gruszka
2011-11-18 12:52 ` Stanislaw Gruszka
2011-11-18 13:37 ` Mel Gorman [this message]
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