linux-kernel - Re: [PATCH 0/5] mm, highmem: kmap

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Date:	Wed, 27 Oct 2010 11:27:57 +0100
From:	Chris Wilson <chris@...is-wilson.co.uk>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH 0/5] mm, highmem: kmap_atomic rework -v3

On Sat, 18 Sep 2010 17:53:26 +0200, Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:
> Next version of the kmap_atomic rework using Andrew's fancy CPP trickery to
> avoid having to convert the whole tree at once.
> 
> This is compile tested for i386-allmodconfig, frv, mips-sb1250-swarm,
> powerpc-ppc6xx_defconfig, sparc32_defconfig, arm-omap3 (all with
> HIGHEM=y).

This break on x86, HIGHMEM=n:

arch/x86/mm/iomap_32.c: In function ‘kmap_atomic_prot_pfn’:
arch/x86/mm/iomap_32.c:64: error: implicit declaration of function
‘kmap_atomic_idx_push’
arch/x86/mm/iomap_32.c: In function ‘iounmap_atomic’:
arch/x86/mm/iomap_32.c:101: error: implicit declaration of function
‘kmap_atomic_idx_pop’

The use of the kmap idx there looks a little delicate so I'm not sure how
to fix this.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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