[PATCH] elevator: print default selection

Currently we only print the default io scheduler if the kernel chooses,
not if the user/bootloader has specified one. This patch saves the extra
line in dmesg but always notified of the default choice by appending
(default) to that line:

	..
	io scheduler noop registered
	io scheduler anticipatory registered
	io scheduler deadline registered
	io scheduler cfq registered (default)
	..

Patch originally from Srihari Vijayaraghavan, modified by me.
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/block/elevator.c

@@ -170,8 +170,6 @@ static void elevator_setup_default(void)
 #else
 #error "You must build at least 1 IO scheduler into the kernel"
 #endif
-	printk(KERN_INFO "elevator: using %s as default io scheduler\n",
-							chosen_elevator);
 }
 
 static int __init elevator_setup(char *str)
@@ -515,7 +513,10 @@ int elv_register(struct elevator_type *e)
 	list_add_tail(&e->list, &elv_list);
 	spin_unlock_irq(&elv_list_lock);
 
-	printk(KERN_INFO "io scheduler %s registered\n", e->elevator_name);
+	printk(KERN_INFO "io scheduler %s registered", e->elevator_name);
+	if (!strcmp(e->elevator_name, chosen_elevator))
+		printk(" (default)");
+	printk("\n");
 	return 0;
 }
 EXPORT_SYMBOL_GPL(elv_register);