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mm, highmem: use PKMAP_NR() to calculate an index of pkmap

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To calculate an index of pkmap, using PKMAP_NR() is more understandable
and maintainable, so change it.

Signed-off-by: Joonsoo Kim <[email protected]>
Cc: Mel Gorman <[email protected]>
Reviewed-by: Minchan Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Joonsoo Kim 2012-12-11 16:01:17 -08:00 • committed by Linus Torvalds
commit 4de22c0584
1 changed files with 1 additions and 1 deletions
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2
mm/highmem.c
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@ -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]);
}