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Date: Mon, 10 Feb 2003 00:19:21 -0800
From: Andrew Morton <akpm@digeo.com>
To: Andrea Arcangeli <andrea@suse.de>
Cc: piggin@cyberone.com.au, jakob@unthought.net, david.lang@digitalinsight.com,
       riel@conectiva.com.br, ckolivas@yahoo.com.au,
       linux-kernel@vger.kernel.org, axboe@suse.de
Subject: Re: stochastic fair queueing in the elevator [Re: [BENCHMARK]
 2.4.20-ck3 / aa / rmap with contest]
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Andrea Arcangeli <andrea@suse.de> wrote:
>
> BTW, one thing that should definitely do readhaead and it's
> not doing that (at least in 2.4) is the readdir path, again to generate
> big commands, no matter the seeks.  It was lost with the directory in
> pagecache.

Yes.  But ext3 is still doing directory readahead, and I have never
noticed it gaining any particular benefit over ext2 from it.

And neither fs performs inode table readahead.
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