Hi all, this (lightly tested) series cleanups the strange mappedbno argument to various dabuf helpers. If that argument has a positive value it is used as xfs_daddr_t to get/read the block, and otherwise it is overloaded for a flag. This series splits out the users that have a xfs_daddr_t to just use the buffer interfaces directly, and the replaces the magic with a flags argument and one properly named flag.
