[PATCH v2 5/5] mm, highmem: get virtual address of the page using PKMAP_ADDR()

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

Cc: Mel Gorman <mel@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Signed-off-by: Joonsoo Kim <js1304@xxxxxxxxx>
Reviewed-by: Minchan Kim <minchan@xxxxxxxxxx>

diff --git a/mm/highmem.c b/mm/highmem.c
index b365f7b..675ec97 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -137,8 +137,7 @@ 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)
-- 
1.7.9.5

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