linux-kernel - Re: [PATCH RFC] mm/swap: automatic tuning for swapin readahead

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Message-ID: <50869E6C.1080907@redhat.com>
Date:	Tue, 23 Oct 2012 09:41:00 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Shaohua Li <shli@...nel.org>
CC:	Hugh Dickins <hughd@...gle.com>,
	Konstantin Khlebnikov <khlebnikov@...nvz.org>,
	Minchan Kim <minchan@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Wu Fengguang <fengguang.wu@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: [PATCH RFC] mm/swap: automatic tuning for swapin readahead

On 10/23/2012 01:51 AM, Shaohua Li wrote:

> I have no strong point against the global state method. But I'd agree making the
> heuristic simple is preferred currently. I'm happy about the patch if the '+1'
> is removed.

Without the +1, how will you figure out when to re-enable readahead?

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