>>>>> "Joel" == Joel Becker <jlbec@xxxxxxxxxxxx> writes: Joel> I'm happy to chat about it. Unfortunately, like Darrick says, Joel> sys_dio() coding hasn't happened. I do think we're better off Joel> with some kind of explicit API than some magic state on the file. Joel> I mean, even something like: Joel> ssize_t write_with_pi(int fd, const void *buf, size_t count, Joel> const void *pi, size_t pi_count); Joel> It's not as nice as a non-historical API (eg sys_dio), but it also Joel> probably plays nicer with buffered I/O. Pretty much everyone I have talked to that are interested in explicitly attaching PI (as opposed to relying on the kernel doing it) are using Linux aio. I am not opposed to having more read()/write() like interface as well. But I think it's important to cater to the I/O paradigm used by the applications interested in this. It's a lot easier to tweak a few IOCB fields than it is to rewrite how an application does I/O. -- Martin K. Petersen Oracle Linux Engineering -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
