Richard Gooch wrote: > > OK. How do you figure on dealing with the problem of multiple > high-level drivers talking to the same device? How does sr.o "know" > that this is also a CD-RW? How does sg.o "know" that this is also a > tape? > At some point something talks to the device -- in this case, it's the SCSI layer. Follow the interfaces in the kernel and it becomes obvious. > Where does the responsibility lie for figuring out the capabilities? > > Further, which device node/fs/driver exports the capability list? > > And what about locking between drivers? Orthogonal issue. You may want a locking mechanism, but it almost certainly should not be automatic. Note that especially ide-scsi is a good example on how *not* to do things. The fact that you have to choose one of two interfaces for different operations (I can't use a CD-writer in the default configuration!) is insane. -hpa -- <[EMAIL PROTECTED]> at work, <[EMAIL PROTECTED]> in private! "Unix gives you enough rope to shoot yourself in the foot." http://www.zytor.com/~hpa/puzzle.txt - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
- Re: LANANA: To Pending Device Number Registrants Ingo Oeser
- Re: LANANA: To Pending Device Number Registrants H. Peter Anvin
- Re: LANANA: To Pending Device Number Registrants Jens Axboe
- Re: LANANA: To Pending Device Number Registrants Richard Gooch
- Re: LANANA: To Pending Device Number Registrants H. Peter Anvin
- Re: LANANA: To Pending Device Number Registrants Richard Gooch
- Re: LANANA: To Pending Device Number Registrants H. Peter Anvin
- Re: LANANA: To Pending Device Number Registrants Richard Gooch
- Re: LANANA: To Pending Device Number Registrants H. Peter Anvin
- Re: LANANA: To Pending Device Number Registrants Richard Gooch
- Re: LANANA: To Pending Device Number Registrants H. Peter Anvin
- Re: LANANA: To Pending Device Number Registrants Kai Henningsen
- Re: LANANA: To Pending Device Number Registrants Kai Henningsen
- Re: LANANA: To Pending Device Number Registrants Linus Torvalds
- Re: LANANA: To Pending Device Number Registrants Richard Gooch
- Re: LANANA: To Pending Device Number Registrants Alan Cox
- Re: LANANA: To Pending Device Number Registrants Richard Gooch
- Re: LANANA: To Pending Device Number Registrants H. Peter Anvin
- Re: LANANA: To Pending Device Number Registrants Alan Cox
- Re: LANANA: To Pending Device Number Registrants Jeff Garzik
- Re: LANANA: To Pending Device Number Registrants Guest section DW