linux-kernel - Re: [Stable-review] [166/197] md/raid5: allow for more than 2^31 chunks.

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Date:	Thu, 22 Apr 2010 17:58:47 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Chuck Ebbert <cebbert@...hat.com>
cc:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	stable@...nel.org, NeilBrown <neilb@...e.de>,
	akpm@...ux-foundation.org, stable-review@...nel.org,
	alan@...rguk.ukuu.org.uk
Subject: Re: [Stable-review] [166/197] md/raid5: allow for more than 2^31
 chunks.



On Thu, 22 Apr 2010, Chuck Ebbert wrote:

> On Thu, 22 Apr 2010 12:10:17 -0700
> Greg KH <gregkh@...e.de> wrote:
> 
> > 2.6.32-stable review patch.  If anyone has any objections, please let
> > us know.
> > 
> > ------------------
> > 
> > From: NeilBrown <neilb@...e.de>
> > 
> > commit 35f2a591192d0a5d9f7fc696869c76f0b8e49c3d upstream.
> > 
> > With many large drives and small chunk sizes it is possible
> > to create a RAID5 with more than 2^31 chunks.  Make sure this
> > works.
> 
> Causes build failure on i686:
> ERROR: "__umoddi3" [drivers/md/raid456.ko] undefined!
> 
> http://lkml.org/lkml/2010/4/22/50

Yeah, that one is definitely not stable material as-is.

		Linus
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