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From: Jens Axboe <axboe@suse.de>
To: Rik van Riel <riel@conectiva.com.br>
Cc: "John O'Donnell" <johnod@voicefx.com>, linux-kernel@vger.kernel.org
Subject: Re: 2.4.0:  __alloc_pages: 3-order allocation failed.
Date: Mon, 8 Jan 2001 05:06:12 +0100	[thread overview]
Message-ID: <20010108050612.A2519@suse.de> (raw)
In-Reply-To: <3A58E69D.30005@voicefx.com> <Pine.LNX.4.21.0101072006450.21675-100000@duckman.distro.conectiva>
In-Reply-To: <Pine.LNX.4.21.0101072006450.21675-100000@duckman.distro.conectiva>; from riel@conectiva.com.br on Sun, Jan 07, 2001 at 08:07:52PM -0200

On Sun, Jan 07 2001, Rik van Riel wrote:
> > __alloc_pages: 3-order allocation failed.
> 
> This debugging check should probably be removed around
> 2.4.5, in the mean time it is much too useful to track
> down badly behaving device drivers ;)

It need not be a badly written driver, it could be a fine one
just trying to see if it can get 2^3 successive pages for
performance reasons. As long as it continues on its merry way when
this fails it would be fine, and this message just confuses users.

Plus, for this to be really useful as a catch-bad-guys tool it
would be nice with a hint as what causes it (EIP or even a
call trace).

-- 
* Jens Axboe <axboe@suse.de>
* SuSE Labs
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      reply	other threads:[~2001-01-08  4:06 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-01-07 21:58 2.4.0: __alloc_pages: 3-order allocation failed John O'Donnell
2001-01-07 22:07 ` Rik van Riel
2001-01-08  4:06   ` Jens Axboe [this message]

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