[PATCH] introduce and use kzalloc

This patch introduces a kzalloc wrapper and converts kernel/ to use it.  It
saves a little program text.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 15 insertions, 1 deletions

diff --git a/include/linux/slab.h b/include/linux/slab.h
index 80b2dfde2e8..42a6bea58af 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -99,7 +99,21 @@ found:
 	return __kmalloc(size, flags);
 }
 
-extern void *kcalloc(size_t, size_t, unsigned int __nocast);
+extern void *kzalloc(size_t, unsigned int __nocast);
+
+/**
+ * kcalloc - allocate memory for an array. The memory is set to zero.
+ * @n: number of elements.
+ * @size: element size.
+ * @flags: the type of memory to allocate.
+ */
+static inline void *kcalloc(size_t n, size_t size, unsigned int __nocast flags)
+{
+	if (n != 0 && size > INT_MAX / n)
+		return NULL;
+	return kzalloc(n * size, flags);
+}
+
 extern void kfree(const void *);
 extern unsigned int ksize(const void *);