[PATCH] Remove redundant AND from swp_type()

There is a useless AND in swp_type() function.

We just shifted right SWP_TYPE_SHIFT() bits the value from the swp_entry_t,
and then we AND it with "(1 << 5) - 1" (which is a mask corresponding to
the number of bits used by "type").
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/linux/swapops.h

@@ -30,8 +30,7 @@ static inline swp_entry_t swp_entry(unsigned long type, pgoff_t offset)
  */
 static inline unsigned swp_type(swp_entry_t entry)
 {
-	return (entry.val >> SWP_TYPE_SHIFT(entry)) &
-			((1 << MAX_SWAPFILES_SHIFT) - 1);
+	return (entry.val >> SWP_TYPE_SHIFT(entry));
 }
 
 /*