Christoph Hellwig wrote: > - given that our current O_SYNC really is and always has been actuall > Posix O_DSYNC Are you sure about this? >From http://www-01.ibm.com/support/docview.wss?uid=isg1IZ01704 : Error description LINUX O_DIRECT/O_SYNC TAKES TOO MANY IOS Problem summary On AIX, the O_SYNC and O_DSYNC are different values and performance improvement are available because the inode does not need to be flushed for mtime changes only. On Linux the flags are the same, so performance is lost. when databases open files with O_DIRECT and O_SYNC. -- Jamie -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
