linux-kernel - Re: [PATCH 8/9] mm: dont set __GFP

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Message-ID: <20120301101354.GD1665@cmpxchg.org>
Date:	Thu, 1 Mar 2012 11:13:54 +0100
From:	Johannes Weiner <hannes@...xchg.org>
To:	Fengguang Wu <fengguang.wu@...el.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Greg Thelen <gthelen@...gle.com>, Jan Kara <jack@...e.cz>,
	Ying Han <yinghan@...gle.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Rik van Riel <riel@...hat.com>,
	Johannes Weiner <jweiner@...hat.com>,
	Linux Memory Management List <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 8/9] mm: dont set __GFP_WRITE on ramfs/sysfs writes

On Tue, Feb 28, 2012 at 10:00:30PM +0800, Fengguang Wu wrote:
> Try to avoid page reclaim waits when writing to ramfs/sysfs etc.
> 
> Maybe not a big deal...

This looks like a separate fix that would make sense standalone.  It's
not just the waits, there is not much of a point in skipping zones
during allocation based on the dirty usage which they'll never
contribute to.  Could you maybe pull this up front?

> CC: Johannes Weiner <jweiner@...hat.com>
> Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>

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