On Wed, Nov 08, 2006 at 10:48:01AM -0600, Jeremy Linton wrote: > A unified multiple device mmap buffer interface for would probably be useful > as well. This is to get around the problems inherent in the current design > that keep more than one device from using a mmap/reserve buffer allocated for > another device. > What I would personally like to be able to do with the SG interface is have a > shared memory region where I can kick off a few dozen tagged commands to a > device, get notification when they have completed and then send a similar > command to a second device, all without involving the CPU in any copy > operations, or too many page management operations. > In my dream world this would require some kind of tagging of commands as well > so I don't have to handle a bunch of async completions for commands in a > group that need to complete as a group. This is all starting to sound/feel a lot like the current proposed design for netchannels: http://lwn.net/Articles/206699/ If we did an AF_SCSI (I've seen it mooted before), then I suppose we could just use netchannels. The other route is tweaking the current netchannels proposal to be a bit less networking-centric and use kiocbs (or something ...) to hold the data that's being transmitted. - 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
