dm log: make dm_dirty_log init and exit static

dm_dirty_log_{init,exit}() can now become static.

Signed-off-by: Adrian Bunk <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Alasdair G Kergon <[e-mail]>

drivers/md/dm-log.c

···
 	.status = disk_status,
 };
 
-int __init dm_dirty_log_init(void)
+static int __init dm_dirty_log_init(void)
 {
 	int r;
 
···
 	return r;
 }
 
-void __exit dm_dirty_log_exit(void)
+static void __exit dm_dirty_log_exit(void)
 {
 	dm_dirty_log_type_unregister(&_disk_type);
 	dm_dirty_log_type_unregister(&_core_type);

drivers/md/dm.h

···
 
 void dm_kobject_uevent(struct mapped_device *md);
 
-/*
- * Dirty log
- */
-int dm_dirty_log_init(void);
-void dm_dirty_log_exit(void);
-
 int dm_kcopyd_init(void);
 void dm_kcopyd_exit(void);