+int smfs_cow_cleanup(struct smfs_super_info *smb)
+{
+ struct snap_super_info *snap_sinfo = smb->smsi_snap_info;
+ struct list_head *snap_list = &snap_sinfo->snap_list;
+ struct smfs_hook_ops *cow_hops;
+ int rc = 0;
+ ENTRY;
+
+ while (!list_empty(snap_list)) {
+ struct snap_info *snap_info;
+
+ snap_info = list_entry(snap_list->next, struct snap_info,
+ sni_list);
+ rc = smfs_cleanup_snap_info(snap_info);
+ if (rc)
+ CERROR("cleanup snap_info error rc=%d\n", rc);
+ list_del(&snap_info->sni_list);
+ OBD_FREE(snap_info, sizeof(struct snap_info));
+ }
+
+ if (snap_sinfo->snap_fsfilt)
+ fsfilt_put_ops(snap_sinfo->snap_fsfilt);
+ if (snap_sinfo->snap_cache_fsfilt)
+ fsfilt_put_ops(snap_sinfo->snap_cache_fsfilt);
+
+ cow_hops = smfs_unregister_hook_ops(smb, COW_HOOK);
+ smfs_free_hook_ops(cow_hops);
+
+ SMFS_CLEAN_COW(smb);
+ if (snap_sinfo)
+ OBD_FREE(snap_sinfo, sizeof(struct snap_super_info));
+ RETURN(rc);
+}
+