[PATCH]micro optimization of kcalloc

[Oliver Neukum]

Hi,

this transforms the limit check of kcalloc() so that size becomes the
divisor. This saves some kernel code, because size is always a constant,
thus turning the check into a simple comparison saving a full division.
This saved 18K in allyesconfig's kernel size.

	Regards
		Oliver

Signed-off-by: Oliver Neukum <oliver@xxxxxxxxxxx>

--- a/include/linux/slab.h	2006-03-11 23:12:55.000000000 +0100
+++ b/include/linux/slab.h	2006-03-20 09:00:41.000000000 +0100
@@ -118,7 +118,7 @@
  */
 static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
 {
-	if (n != 0 && size > INT_MAX / n)
+	if (unlikely(n > INT_MAX / size ))
 		return NULL;
 	return kzalloc(n * size, flags);
 }
-
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