On Thu, Jun 04, 2009 at 02:03:50PM +0200, Thomas Glanzmann wrote: > Chris, > > > It is a counter and a back reference. With Yan Zheng's new format > > work, the limit is not 2^64. > > That means that there is one back reference for every use of the block? > Where is this back reference stored? (I'm asking because if one back > reference for every copy is stored, it can obviously not be allocated > statically). These are all stored in the extent allocation tree. There isn't exactly a 1:1 mapping but it is effectively that. -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
