ubifs_shash_copy_state
ubifs_shash_copy_state(c, inhash, hash_desc);
err = ubifs_shash_copy_state(c, c->log_hash, c->jheads[jhead].log_hash);
ubifs_shash_copy_state(c, c->log_hash, c->jheads[i].log_hash);
ubifs_shash_copy_state(c, log_hash, hash_desc);
ubifs_shash_copy_state(c, b->bud->log_hash,
ubifs_shash_copy_state(c, c->log_hash, bud->log_hash);