On Fri, 16 Dec 2011, Sarah Sharp wrote: > Ok, I think we just need to divide the tag address space equally between > devices. The devinfo can keep track of the pointers to the scsi_devices > for each LUN, and what tag range each LUN has. So if you have 255 tags > available, and two LUNs, you can give one of them tag 1 to 122, and the > other tags 123 to 254. The block layer already does a lot of this work for you. Look through block/blk-tags.c and you'll see what I mean: You ought to be able to assign the same blk_queue_tag to all the request queues for all the LUNs in your device. And you can call blk_queue_find_tag() to do the reverse mapping. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
