linux-kernel - Re: [PATCH 0/2] readahead update on splice reads

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Message-ID: <20070612064018.GP18832@kernel.dk>
Date:	Tue, 12 Jun 2007 08:40:18 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Fengguang Wu <wfg@...l.ustc.edu.cn>
Cc:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] readahead update on splice reads

On Tue, Jun 12 2007, Fengguang Wu wrote:
> Andrew,
> 
> The two patches optimizes readahead invocations in splice reads:
> 
> 	readahead: move synchronous readahead call out of splice loop
> 	readahead: pass real splice size
> 
> They can be appended to readahead-convert-splice-invocations.patch in
> -mm tree.

Patches look nice, but unfortunately only -mm stuff and will need to be
rebased once 2.6.23 opens anyway.

Where are we on the ondemand read-ahead merging? -mm has continually had
different read-ahead code than mainline now for seemingly years, seems a
bit pointless to me. Either we get the stuff merged, or toss it out.
Nothing needs to simmer that long.

I suspect we wont see any real potential regressions before it hits
mainline anyway.

-- 
Jens Axboe

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