This series contains a couple optimizations for the COW I/O path: - avoid any overhead for reads from COW files - streamline the COW handling in write_begin - reduce the number of extent lookups during COW I/O completion It does not touch the direct I/O path (yet), I still have a few unsolved problems there. -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
