module: use krealloc

This converts an open-coded krealloc() to use the shiny new API.
Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi>
Acked-by: NRusty Russell <rusty@rustcorp.com.au>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

kernel/module.c

@@ -310,14 +310,14 @@ static int split_block(unsigned int i, unsigned short size)
 {
 	/* Reallocation required? */
 	if (pcpu_num_used + 1 > pcpu_num_allocated) {
-		int *new = kmalloc(sizeof(new[0]) * pcpu_num_allocated*2,
-				   GFP_KERNEL);
+		int *new;
+
+		new = krealloc(pcpu_size, sizeof(new[0])*pcpu_num_allocated*2,
+			       GFP_KERNEL);
 		if (!new)
 			return 0;
 
-		memcpy(new, pcpu_size, sizeof(new[0])*pcpu_num_allocated);
 		pcpu_num_allocated *= 2;
-		kfree(pcpu_size);
 		pcpu_size = new;
 	}