+ enum ocfs2_alloc_restarted *reason_ret);
+int ocfs2_extend_no_holes(struct inode *inode, u64 new_i_size,
+ u64 zero_to);
+int ocfs2_lock_allocators(struct inode *inode, struct ocfs2_dinode *di,
+ u32 clusters_to_add, u32 extents_to_split,
+ struct ocfs2_alloc_context **data_ac,
+ struct ocfs2_alloc_context **meta_ac);