md: add 'size' as a personality method

[safe/jmp/linux-2.6] / drivers / md / dm-target.c

diff --git a/drivers/md/dm-target.c b/drivers/md/dm-target.c
index 477a041..7decf10 100644 (file)
--- a/drivers/md/dm-target.c
+++ b/drivers/md/dm-target.c
@@ -88,12 +88,10 @@ void dm_put_target_type(struct target_type *t)
 
 static struct tt_internal *alloc_target(struct target_type *t)
 {
-       struct tt_internal *ti = kmalloc(sizeof(*ti), GFP_KERNEL);
+       struct tt_internal *ti = kzalloc(sizeof(*ti), GFP_KERNEL);
 
-       if (ti) {
-               memset(ti, 0, sizeof(*ti));
+       if (ti)
                ti->tt = *t;
-       }
 
        return ti;
 }
@@ -132,26 +130,26 @@ int dm_register_target(struct target_type *t)
        return rv;
 }
 
-int dm_unregister_target(struct target_type *t)
+void dm_unregister_target(struct target_type *t)
 {
        struct tt_internal *ti;
 
        down_write(&_lock);
        if (!(ti = __find_target_type(t->name))) {
-               up_write(&_lock);
-               return -EINVAL;
+               DMCRIT("Unregistering unrecognised target: %s", t->name);
+               BUG();
        }
 
        if (ti->use) {
-               up_write(&_lock);
-               return -ETXTBSY;
+               DMCRIT("Attempt to unregister target still in use: %s",
+                      t->name);
+               BUG();
        }
 
        list_del(&ti->list);
        kfree(ti);
 
        up_write(&_lock);
-       return 0;
 }
 
 /*
@@ -189,8 +187,7 @@ int __init dm_target_init(void)
 
 void dm_target_exit(void)
 {
-       if (dm_unregister_target(&error_target))
-               DMWARN("error target unregistration failed");
+       dm_unregister_target(&error_target);
 }
 
 EXPORT_SYMBOL(dm_register_target);