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tweak page_address

PATCH New Eric W. Biederman 1 participant 1 message May 23, 1999

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Eric W. Biederman

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#0 lore raw

PATCH 1/1 tweak page_address

Replace a multiplication by a shift in page_address. The compiler probably already does but why take chances.

Eric

include/linux/pagemap.h +1 -1
diff -uNrX linux-ignore-files linux-2.3.3.eb2/include/linux/pagemap.h linux-2.3.3.eb3/include/linux/pagemap.h
@@ -14,7 +14,7 @@
 
 static inline unsigned long page_address(struct page * page)
 {
-	return PAGE_OFFSET + PAGE_SIZE * (page - mem_map);
+	return PAGE_OFFSET + ((page - mem_map) << PAGE_SHIFT);
 }
 
 /*

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