linux-kernel - Re: [PATCH 3.4 47/88] mm: add kmap_to

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Date:	Tue, 10 Jun 2014 13:50:54 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Yijing Wang <wangyijing@...wei.com>
Cc:	Hugh Dickins <hughd@...gle.com>, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org, Mel Gorman <mgorman@...e.de>,
	Rik van Riel <riel@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ben Hutchings <ben@...adent.org.uk>,
	Will Deacon <will.deacon@....com>
Subject: Re: [PATCH 3.4 47/88] mm: add kmap_to_page()

On Tue, Jun 10, 2014 at 04:04:53PM +0800, Yijing Wang wrote:
> >> +struct page *kmap_to_page(void *vaddr)
> >> +{
> >> +	unsigned long addr = (unsigned long)vaddr;
> >> +
> >> +	if (addr >= PKMAP_ADDR(0) && addr <= PKMAP_ADDR(LAST_PKMAP)) {
> >> +		int i = (addr - PKMAP_ADDR(0)) >> PAGE_SHIFT;
> >> +		return pte_page(pkmap_page_table[i]);
> >> +	}
> >> +
> >> +	return virt_to_page(addr);
> >> +}
> >> +
> >>  static void flush_all_zero_pkmaps(void)
> >>  {
> >>  	int i;
> > 
> > I think this needs the following on top:
> > 
> > commit 498c2280212327858e521e9d21345d4cc2637f54
> > Author: Will Deacon <will.deacon@....com>
> > Date:   Fri Nov 16 14:15:00 2012 -0800
> > 
> 
> Thanks Hugh. Hi Greg, please pick up this fix patch, Thanks a lot!

Now applied, thanks!

greg k-h
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