On Mon, 17 Mar 2008 13:08:39 -0500 Mike Christie <michaelc@xxxxxxxxxxx> wrote: > Michael Reed wrote: > > - ++blk_size; /* don't know why */ > > -/* round request up to next highest SG_SECTOR_SZ byte boundary */ > > I think we can remove this code. This was asked before, and here is > Doug's reply: > http://www.mail-archive.com/linux-scsi@xxxxxxxxxxxxxxx/msg11757.html > > It was probaly due to some weirdness in that the scatterlist that sg.c > made used to be sent directly to the LLD (now it is only used to > hold/organize the pages/segments that the sg and st driver manages in > their internal reserves), or maybe it had something to do with that and > dma alignment problems or something. I really have no idea, but the > block layer SG IO code has not been rounding up in its indirect path and > it has been fine. The block layer (blk_rq_map_user) does padding for LLDs, I guess. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
