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Date: Thu, 1 Aug 2002 04:14:01 -0300 (BRT)
From: Marcelo Tosatti <marcelo@conectiva.com.br>
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To: Jens Axboe <axboe@suse.de>
Cc: lkml <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@zip.com.au>
Subject: Re: Linux v2.4.19-rc5
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On Thu, 1 Aug 2002, Jens Axboe wrote:

> On Thu, Aug 01 2002, Marcelo Tosatti wrote:
> > <akpm@zip.com.au> (02/08/01 1.663)
> > 	[PATCH] disable READA
>
> Since -rc5 is not to be found yet, I don't know what version of this
> made it in. Is READA just being disabled on SMP, or was it the general
> #if 0 change that got included?

Its being disabled on UP and SMP. I dont like having such readahead IO
mode working only for UP.

> I'm asking since plain disabling READA might have nasty performance
> effects. Andrew, I bet you did some numbers on this, care to share?

If thats true (the performance effects) I'll release -final with IMO not
very coherent READA semantics :)

Anyway, lets wait for the numbers.




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