linux-kernel - Re: [PATCH] include: asm-generic: page.h: Remove useless get_user_page and free_user

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Date:	Thu, 19 Nov 2015 16:18:43 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-arm-kernel@...ts.infradead.org,
	"linux-snps-arc@...ts.infradead.org" 
	<linux-snps-arc@...ts.infradead.org>,
	Chen Gang <xili_gchen_5257@...mail.com>,
	"vgupta@...opsys.com" <vgupta@...opsys.com>,
	"dhowells@...hat.com" <dhowells@...hat.com>,
	"geert@...ux-m68k.org" <geert@...ux-m68k.org>,
	"gerg@...inux.org" <gerg@...inux.org>,
	"jonas@...thpole.se" <jonas@...thpole.se>,
	"abrodkin@...opsys.com" <abrodkin@...opsys.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	kernel mailing list <linux-kernel@...r.kernel.org>,
	"linux-m68k@...ts.linux-m68k.org" <linux-m68k@...ts.linux-m68k.org>
Subject: Re: [PATCH] include: asm-generic: page.h: Remove useless
 get_user_page and free_user_page

On Thu, Nov 19, 2015 at 12:25:45PM +0100, Arnd Bergmann wrote:
> On Thursday 19 November 2015 03:40:25 Chen Gang wrote:
> > diff --git a/include/asm-generic/page.h b/include/asm-generic/page.h
> > index 37d1fe2..67cfb7d 100644
> > --- a/include/asm-generic/page.h
> > +++ b/include/asm-generic/page.h
> > @@ -24,9 +24,6 @@
> >  
> >  #ifndef __ASSEMBLY__
> >  
> > -#define get_user_page(vaddr)           __get_free_page(GFP_KERNEL)
> > -#define free_user_page(page, addr)     free_page(addr)
> > -
> >  #define clear_page(page)       memset((page), 0, PAGE_SIZE)
> >  #define copy_page(to,from)     memcpy((to), (from), PAGE_SIZE)
> >  
> > 
> 
> Looks good. I can take the asm-generic portion when you split it up, and
> I can also help you merge the remaining patches in case some of
> the arch maintainers fail to pick them up. I think all five of them
> are actively maintained though, so the patches should just go through
> the respective architecture trees.

Or we just ack the patch and have it go through one tree, which I think
is the most sensible.  I can't imagine that there would be any major
conflicts here, surely no one is constantly changing their asm/page.h ?

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