On Mon, 17 Nov 2003, David Brownell wrote:

> > That's a good rationale.  (Although the fix would go into the
> > scatter-gather library which belongs to usbcore, not in usb-storage.  
> > After all, there may be other drivers at some future time that also want
> > to do low-overhead s-g transfers.)
> 
> No, it should go _higher_ than that.  The "no partial packets
> in the middle of an sglist" policy belongs to usb-storage..

Does it really?  It seems to me that anyone doing a bulk transfer using an 
s-g list would want to make it look like a single stream, i.e., no short 
packets in the middle.  That's built into the USB standard: a short packet 
signals the end of a transfer.

Alan Stern



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