md: centralise all freeing of an 'mddev' in 'md_free'

md_free is the .release handler for the md kobj_type.
So it makes sense to release all the objects referenced by
the mddev in there, rather than just prior to calling kobject_put
for what we think is the last time.

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 11 insertions, 9 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index da838cc32cc..970a8c42ba9 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -221,12 +221,6 @@ static void mddev_put(mddev_t *mddev)
         if (!mddev->raid_disks && list_empty(&mddev->disks)) {
                 list_del(&mddev->all_mddevs);
                 spin_unlock(&all_mddevs_lock);
-                if (mddev->queue)
-                        blk_cleanup_queue(mddev->queue);
-                mddev->queue = NULL;
-                if (mddev->sysfs_state)
-                        sysfs_put(mddev->sysfs_state);
-                mddev->sysfs_state = NULL;
                 kobject_put(&mddev->kobj);
         } else
                 spin_unlock(&all_mddevs_lock);
@@ -3451,6 +3445,17 @@ md_attr_store(struct kobject *kobj, struct attribute *attr,
 static void md_free(struct kobject *ko)
 {
         mddev_t *mddev = container_of(ko, mddev_t, kobj);
+
+        if (mddev->sysfs_state)
+                sysfs_put(mddev->sysfs_state);
+
+        if (mddev->gendisk) {
+                del_gendisk(mddev->gendisk);
+                put_disk(mddev->gendisk);
+        }
+        if (mddev->queue)
+                blk_cleanup_queue(mddev->queue);
+
         kfree(mddev);
 }
 
@@ -6435,9 +6440,6 @@ static __exit void md_exit(void)
                 if (!disk)
                         continue;
                 export_array(mddev);
-                del_gendisk(disk);
-                put_disk(disk);
-                mddev->gendisk = NULL;
                 mddev_put(mddev);
         }
 }