On Mon, Mar 24 2003, Linus Torvalds wrote: > > On 24 Mar 2003, James Bottomley wrote: > > > > > > For disk-like media: > > > > > > READ_10 > > > WRITE_10 > > > > We do about the best we can for read and write. For sd, we gauge the > > size of the command from the size of the medium: <1Gb=> six byte, from > > 1Gb to 2Tb 10 byte, over 2Tb 16 byte, so I think this should all be > > fine. > > Really? The code was _supposed_ to always start off with READ/WRITE_10's, > and then fall back to the old READ/WRITE_6 if it gets errors from that. Do > we really have some broken random-number generator semantic still in teh > SCSI layer? That sounds like a piece of crock.
It's not true, ->ten is set unconditionally and we only fall back to 6 byte cdb's if we see an ILLEGAL_REQUEST on a READ_10/WRITE_10. So the logic is, always assume 10-byte commands. If an incoming request cannot be addressed with 10-byte commands, use 16. -- Jens Axboe ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
