linux-kernel - Re: [BUG -next] "mm: per-thread vma caching fix 5" breaks s390

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Message-Id: <20140319102711.84f68cdb4a7b7acfd945fe74@canb.auug.org.au>
Date:	Wed, 19 Mar 2014 10:27:11 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Tony Luck <tony.luck@...il.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Davidlohr Bueso <davidlohr@...com>,
	Michel Lespinasse <walken@...gle.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	Rik van Riel <riel@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: [BUG -next] "mm: per-thread vma caching fix 5" breaks s390

Hi Andrew,

On Tue, 18 Mar 2014 16:10:50 -0700 Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> On Tue, 18 Mar 2014 16:06:59 -0700 Tony Luck <tony.luck@...il.com> wrote:
> 
> > On Tue, Mar 18, 2014 at 5:41 AM, Heiko Carstens
> > <heiko.carstens@...ibm.com> wrote:
> > > Given that this is just an addon patch to Davidlohr's "mm: per-thread
> > > vma caching" patch I was wondering if something in there is architecture
> > > specific.
> > > But it doesn't look like that. So I'm wondering if this only breaks on
> > > s390?
> > 
> > I'm seeing this same BUG_ON() on ia64 (when trying out next-20140318)
> 
> -next is missing
> http://ozlabs.org/~akpm/mmots/broken-out/mm-per-thread-vma-caching-fix-6.patch.
> Am presently trying to cook up an mmotm for tomorrow's -next.  

I could apply just that patch to today's linux-next if you like.
Otherwise if you get a new mmotm out in the next ~6-8 hours, I will use
that.
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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