[PATCH 1/5] mm, highmem: use PKMAP_NR() to calculate an index of pkmap
From: Joonsoo Kim <hidden>
Date: 2012-10-28 19:15:12
Also in:
lkml
Subsystem:
memory management, memory management - core, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
To calculate an index of pkmap, using PKMAP_NR() is more understandable and maintainable, So change it. Cc: Mel Gorman <mgorman@suse.de> Signed-off-by: Joonsoo Kim <redacted>
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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