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Date: Mon, 18 Jul 2016 12:13:36 -0400
From: Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [PATCH 2/3] mm, vmscan: Release/reacquire lru_lock on pgdat
 change
Message-ID: <20160718161336.GB16465@cmpxchg.org>
References: <1468853426-12858-1-git-send-email-mgorman@techsingularity.net>
 <1468853426-12858-3-git-send-email-mgorman@techsingularity.net>
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In-Reply-To: <1468853426-12858-3-git-send-email-mgorman@techsingularity.net>
Sender: owner-linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>
To: Mel Gorman <mgorman@techsingularity.net>
Cc: Andrew Morton <akpm@linux-foundation.org>, Minchan Kim <minchan@kernel.org>, Vlastimil Babka <vbabka@suse.cz>, Linux-MM <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>

On Mon, Jul 18, 2016 at 03:50:25PM +0100, Mel Gorman wrote:
> With node-lru, the locking is based on the pgdat. As Minchan pointed
> out, there is an opportunity to reduce LRU lock release/acquire in
> check_move_unevictable_pages by only changing lock on a pgdat change.
> 
> Signed-off-by: Mel Gorman <mgorman@techsingularity.net>

Acked-by: Johannes Weiner <hannes@cmpxchg.org>

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