From: Joonsoo Kim <js1304@gmail.com>
Date: Fri, 9 Nov 2012 03:04:08 +0000 (+1100)
Subject: mm, highmem: get virtual address of the page using PKMAP_ADDR()
X-Git-Tag: next-20121112~5^2~225
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=bbb50e4c895fb25b90b041607f590b2f8698ab34;p=karo-tx-linux.git

mm, highmem: get virtual address of the page using PKMAP_ADDR()

In flush_all_zero_pkmaps(), we have an index of the pkmap associated with
the page.  Using this index, we can simply get virtual address of the
page.  So change it.

Signed-off-by: Joonsoo Kim <js1304@gmail.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Minchan Kim <minchan@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/highmem.c b/mm/highmem.c
index 91e80022aaad..c8be37619319 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -138,8 +138,7 @@ static unsigned int flush_all_zero_pkmaps(void)
 		 * So no dangers, even with speculative execution.
 		 */
 		page = pte_page(pkmap_page_table[i]);
-		pte_clear(&init_mm, (unsigned long)page_address(page),
-			  &pkmap_page_table[i]);
+		pte_clear(&init_mm, PKMAP_ADDR(i), &pkmap_page_table[i]);
 
 		set_page_address(page, NULL);
 		if (index == PKMAP_INVALID_INDEX)