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Date: Tue, 22 Feb 2011 13:22:04 -0800 (PST)
From: David Rientjes <rientjes@google.com>
To: Dave Hansen <dave@linux.vnet.ibm.com>
cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        Michael J Wolf <mjwolf@us.ibm.com>,
        Andrea Arcangeli <aarcange@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>, Mel Gorman <mel@csn.ul.ie>,
        Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [PATCH 4/5] teach smaps_pte_range() about THP pmds
In-Reply-To: <20110222015343.41586948@kernel>
Message-ID: <alpine.DEB.2.00.1102221321000.5929@chino.kir.corp.google.com>
References: <20110222015338.309727CA@kernel> <20110222015343.41586948@kernel>
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On Mon, 21 Feb 2011, Dave Hansen wrote:

> 
> v2 - used mm->page_table_lock to fix up locking bug that
> 	Mel pointed out.  Also remove Acks since things
> 	got changed significantly.
> 
> This adds code to explicitly detect  and handle
> pmd_trans_huge() pmds.  It then passes HPAGE_SIZE units
> in to the smap_pte_entry() function instead of PAGE_SIZE.
> 
> This means that using /proc/$pid/smaps now will no longer
> cause THPs to be broken down in to small pages.
> 
> Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com>

Acked-by: David Rientjes <rientjes@google.com>
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