linux-kernel - Re: [PATCH] readahead: add comments on PG

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Message-ID: <20110807142729.GA2055@barrios-desktop>
Date:	Sun, 7 Aug 2011 23:27:29 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	Wu Fengguang <fengguang.wu@...el.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>,
	Matthew Wilcox <willy@...ux.intel.com>,
	Linux Memory Management List <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] readahead: add comments on PG_readahead

On Fri, Aug 05, 2011 at 11:50:40AM +0800, Wu Fengguang wrote:
> Add comments to clarify the easily misunderstood PG_readahead timing.
> 
> PG_readahead is a trigger to say, when you get this far, it's time to
> think about kicking off the _next_ readahead.            -- Hugh
> 
> CC: Hugh Dickins <hughd@...gle.com>
> CC: Matthew Wilcox <willy@...ux.intel.com>
> Signed-off-by: Wu Fengguang <fengguang.wu@...el.com>
Reviewed-by: Minchan Kim <minchan.kim@...il.com>

I expect it would be very helpful.

-- 
Kind regards,
Minchan Kim
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