linux-kernel - Re: fs: dax: do not build on ARC or SH

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Date:	Mon, 23 Feb 2015 13:58:47 -0800
From:	Christoph Hellwig <hch@...radead.org>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	Matthew Wilcox <willy@...ux.intel.com>,
	Arnd Bergmann <arnd@...db.de>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-sh@...r.kernel.org, Vineet Gupta <vgupta@...opsys.com>
Subject: Re: fs: dax: do not build on ARC or SH

On Mon, Feb 23, 2015 at 01:56:34PM -0800, Guenter Roeck wrote:
> Guess there a philosophical difference in opinion if the architecture code
> should (have to) provide copy_user_page() or not outside the architecture
> code itself. After all, fs/dax.c _is_ the only user of this function outside
> the architecture code.

Given that copy_user_page just is an optimized version of copy_page
all these architectures should just grab the trivial macro defintion
from the asm-generic version so that we could avoid this discussion.
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