linux-kernel - Re: [PATCH] Check for compound pages in set_page

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Message-ID: <20070718184958.GH11657@kernel.dk>
Date:	Wed, 18 Jul 2007 20:49:58 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Hugh Dickins <hugh@...itas.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Subject: Re: [PATCH] Check for compound pages in set_page_dirty()

On Wed, Jul 18 2007, Hugh Dickins wrote:
> On Wed, 18 Jul 2007, Jens Axboe wrote:
> > 
> > OK, you clearly have more knowledge in that area than I, but I do wish
> > that you would have made a note in the code at least to remove things
> > like this. It's pretty ugly to have superflous tests like that,
> > especially since there was not even a comment saying _why_ you could not
> > call set_page_dirty() on a compound page. I see it in the commit text,
> > but nobody looking at fs/bio.c or fs/direct-io.c would directly find any
> > reference of that.
> > 
> > Could you submit a patch removing the tests?
> 
> Okay, I'll do that - once I've reminded myself how to test it and done so!

I'll do a test on this tomorrow and let you know what the results are! I
should be able to do a quick fio job file for this, no need to write
test cases :-)

-- 
Jens Axboe

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