linux-kernel - Re: [PATCH -tip 2/5] x86: use asm-generic/dma-mapping-common.h

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Message-Id: <20090528164515P.fujita.tomonori@lab.ntt.co.jp>
Date:	Thu, 28 May 2009 16:44:57 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	akpm@...ux-foundation.org
Cc:	fujita.tomonori@....ntt.co.jp, linux-kernel@...r.kernel.org,
	mingo@...e.hu, tony.luck@...el.com, linux-ia64@...r.kernel.org,
	arnd@...db.de, joerg.roedel@....com
Subject: Re: [PATCH -tip 2/5] x86: use asm-generic/dma-mapping-common.h

On Thu, 28 May 2009 00:20:32 -0700
Andrew Morton <akpm@...ux-foundation.org> wrote:

> On Fri, 15 May 2009 12:55:02 +0900 FUJITA Tomonori <fujita.tomonori@....ntt.co.jp> wrote:
> 
> > Signed-off-by: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
> > Acked-by: Joerg Roedel <joerg.roedel@....com>
> >
> > ...
> >
> >  /* Make sure we keep the same behaviour */
> >  static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
> >  {
> > @@ -53,178 +55,6 @@ extern int dma_set_mask(struct device *dev, u64 mask);
> >  extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
> >  					dma_addr_t *dma_addr, gfp_t flag);
> >  
> > -static inline dma_addr_t
> > -dma_map_single(struct device *hwdev, void *ptr, size_t size,
> > -	       enum dma_data_direction dir)
> > -{
> > -	struct dma_map_ops *ops = get_dma_ops(hwdev);
> > -	dma_addr_t addr;
> > -
> > -	kmemcheck_mark_initialized(ptr, size);
> 
> This patch attempts to delete kmemcheck stuff which isn't presently in
> linux-next.

kmemcheck_mark stuff is in the tip tree (this patchset is against the
tip tree).

I rework on this patchset against -mm if you merge all the patches.


> 
> So I went ahead and ported the patch, but it'll break if/when kmemcheck
> returns.
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