linux-kernel - Re: 2.6.23-rc8-mm1

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Date:	Tue, 25 Sep 2007 15:05:53 -0700
From:	Badari Pulavarty <pbadari@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>, apw@...dowen.org
Cc:	lkml <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.23-rc8-mm1

Hi Andy,

One the patch you created in -mm is causing compile warning.
Here is the fix. Please verify.

Thanks,
Badari

arch/powerpc/mm/init_64.c: In function `vmemmap_populated':
arch/powerpc/mm/init_64.c:211: warning: passing arg 1 of `vmemmap_section_start' makes pointer from integer without a cast

vmemmap_section_start() gets called with an argument which is unsigned long.

Signed-off-by: Badari Pulavarty <pbadari@...ibm.com>

Index: linux-2.6.23-rc8/arch/powerpc/mm/init_64.c
===================================================================
--- linux-2.6.23-rc8.orig/arch/powerpc/mm/init_64.c	2007-09-25 09:18:13.000000000 -0700
+++ linux-2.6.23-rc8/arch/powerpc/mm/init_64.c	2007-09-25 14:50:44.000000000 -0700
@@ -189,10 +189,9 @@ void pgtable_cache_init(void)
  * do this by hand as the proffered address may not be correctly aligned.
  * Subtraction of non-aligned pointers produces undefined results.
  */
-unsigned long __meminit vmemmap_section_start(struct page *page)
+unsigned long __meminit vmemmap_section_start(unsigned long page)
 {
-	unsigned long offset = ((unsigned long)page) -
-						((unsigned long)(vmemmap));
+	unsigned long offset = page - ((unsigned long)(vmemmap));
 
 	/* Return the pfn of the start of the section. */
 	return (offset / sizeof(struct page)) & PAGE_SECTION_MASK;


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