linux-kernel - Re: [PATCH] parisc: Export flush_cache

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Message-ID: <20130905171338.GB25882@merlin.infradead.org>
Date:	Thu, 5 Sep 2013 13:13:38 -0400
From:	Kyle McMartin <kyle@...radead.org>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
Cc:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	"James E.J. Bottomley" <jejb@...isc-linux.org>,
	Helge Deller <deller@....de>, linux-parisc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] parisc: Export flush_cache_page() (needed by lustre)

On Thu, Sep 05, 2013 at 09:01:59AM -0700, James Bottomley wrote:
> > +EXPORT_SYMBOL_GPL(flush_cache_page);
> 
> This is an internal API: no architecture exports this.  Whoever is
> trying to use it needs to use the correct API, so this is the wrong
> patch.
> 

I suspect it's copy_{to,from}_user_page being called here:

drivers/staging/lustre/lustre/libcfs/linux/linux-curproc.c:
copy_to_user_page(vma, page, addr,

which we could probably take out of line.

--Kyle
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