This is the latest version of the native xfs_buf discontiguous buffer support series. The series introduces the concept of buffer block maps, then adds APIs for using them, converts the internal xfs_buf method implementation to use them exclusively, adds support for discontiguous buffer log items in transactions, converts the directory code to use them and finally removes the xfs_dabuf from the picture. This greatly simplifies the directory buffer code and avoids copy-up/copy-down for discontiguous buffers. It also avoids needing to create and destroy a xfs-dabuf for every directory block that is read or written, greatly reducing buffer setup and teardown overhead and memory footprint. Version 2: - addressed Christoph's comments - reordered to bring the xfs_buf_log_format changes up front - rebased on a current 3.5-rc + xfs-oss/master tree _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
