Hello! On Mon, Nov 16, 2009 at 03:09:18AM +0000, Samuel Thibault wrote: > The branch, master-xen has been updated
> commit c4cbe430a3051382714fb9b38d551c5bba65291e > Author: Samuel Thibault <samuel.thiba...@ens-lyon.org> > Date: Mon Nov 16 03:22:44 2009 +0100 > > Support unaligned writes Great! One question about that one -- I'm not sure whether I asked you already on IRC some months ago and you told me that this is not possible or whether I didn't ask yet: as I understand the new code, in the unaligned case, you copy the *whole* data to align its beginning to a page boundary. What about instead only copying that much from the source until you hit the next page boundary, enqueue that part (with its size being less than a page's size) for processing in the backend, and then enqueue the rest of the data, which now begins on a page boundary, without having to copy it any further? Or aren't we allowed to split up one device_write request into two? Regards, Thomas
signature.asc
Description: Digital signature
