After reviewing this post by Pete Wyckoff:
http://marc.theaimsgroup.com/?l=linux-scsi&m=117278879816029&w=2

I decided to update my sg v4 interface document originally
posted 20061106 which I will now call release 1.1 :
http://lwn.net/Articles/208082/

Pete was proposing to put back din_iovec_count and
dout_iovec_count that had been dropped out of bsg but
had been in release 1.1 . Hmm.

Some other items have been picked up from the bsg
implementation plus the suggestion from LSF'07 to
add dout_resid.

See the attachment, comments welcome.

Doug Gilbert