linux-ext4 - Re: ext4dev build failure on mips: "empty_zero

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Message-ID: <20080513045028.GC22226@linux-mips.org>
Date:	Tue, 13 May 2008 05:50:29 +0100
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	Dmitri Vorobiev <dmitri.vorobiev@...il.com>
Cc:	Theodore Tso <tytso@....edu>, Martin Michlmayr <tbm@...ius.com>,
	linux-mips@...ux-mips.org, linux-ext4@...r.kernel.org
Subject: Re: ext4dev build failure on mips: "empty_zero_page" undefined

On Mon, May 12, 2008 at 06:46:21PM +0400, Dmitri Vorobiev wrote:

> >  What is the Linux-mips' team preference for feeding this patch to
> >  Linus?  This technically isn't a regression, since it was broken in
> >  2.6.25, but it would be nice to get this to Linus sooner rather than
> >  later.  Should I push it with a batch of ext4 fixes, or do you want to
> >  push it via the mips tree?  (Davem asked me to push the sparc export
> >  via ext4, while the ppc arch, it went via the ppc tree.  So whichever
> >  is your preference; I'm easy.  :-)
> >
> >                                             - Ted
> 
> Hi Ted,
> 
> Normally I push my patches via the mips tree, and now I'm Cc:ing Ralf for that.
> 
> Hopefully Ralf will react quickly. :)

I prefer to do it myself so I can apply it at the same time to the MIPS
-stable branches.

I'm a little irriated that this thread seems to be only about
empty_zero_page but apparently not zero_page_mask?  empty_zero_page is
actualy an array of pages on MIPS and ZERO_PAGE() will pick the right one
for a particular user space mapping based on the virtual address but
ZERO_PAGE() also references zero_page_mask.  So I sense more brokenness
here.

  Ralf
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