linux-kernel - Re: [PATCH 3/5] mm: vmscan: remove old flusher wakeup from direct reclaim path

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Message-ID: <20170126013806.GC21211@bbox>
Date:   Thu, 26 Jan 2017 10:38:06 +0900
From:   Minchan Kim <minchan@...nel.org>
To:     Johannes Weiner <hannes@...xchg.org>
CC:     Andrew Morton <akpm@...ux-foundation.org>,
        Mel Gorman <mgorman@...e.de>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>, <kernel-team@...com>
Subject: Re: [PATCH 3/5] mm: vmscan: remove old flusher wakeup from direct
 reclaim path

On Mon, Jan 23, 2017 at 01:16:39PM -0500, Johannes Weiner wrote:
> Direct reclaim has been replaced by kswapd reclaim in pretty much all
> common memory pressure situations, so this code most likely doesn't
> accomplish the described effect anymore. The previous patch wakes up
> flushers for all reclaimers when we encounter dirty pages at the tail
> end of the LRU. Remove the crufty old direct reclaim invocation.
> 
> Signed-off-by: Johannes Weiner <hannes@...xchg.org>
Acked-by: Minchan Kim <minchan@...nel.org>