Messages in this thread Patch in this message | | | From | Joonsoo Kim <> | Subject | [PATCH v2 1/5] mm, highmem: use PKMAP_NR() to calculate an index of pkmap | Date | Thu, 1 Nov 2012 01:56:33 +0900 |
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To calculate an index of pkmap, using PKMAP_NR() is more understandable and maintainable, So change it.
Cc: Mel Gorman <mel@csn.ul.ie> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Joonsoo Kim <js1304@gmail.com> Reviewed-by: Minchan Kim <minchan@kernel.org>
diff --git a/mm/highmem.c b/mm/highmem.c index d517cd1..b3b3d68 100644 --- a/mm/highmem.c +++ b/mm/highmem.c @@ -99,7 +99,7 @@ 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; + int i = PKMAP_NR(addr); return pte_page(pkmap_page_table[i]); } -- 1.7.9.5
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