add: TRACE(("block_cache_get_writable_etc(block = %Ld, transaction = %ld)\n", blockNumber, transaction));
context: block_cache_get_writable_etc(void *_cache, off_t blockNumber, off_t base, off_t length,	int32 transaction){	return get_writable_cached_block((block_cache *)_cache, blockNumber,				base, length, transaction, false);}