On Monday 07 January 2008 16:01:40 Tejun Heo wrote: > > But we hit the same problems: > > > > 1) sg_chain loses information. The clever chain packaging makes reading > > easy, but manipulation is severely limited. You can append to your own > > chains by padding, but not someone elses. This works for SCSI, but what > > about the rest of us? And don't even think of joining mapped chains: it > > will almost work. > > You can append by allocating one more element on the chain to be > appended and moving the last element of the first chain to it while > using the last element for chaining. Hi Tejun, Nice try! Even ignoring the ugliness of undoing such an operation if the caller doesn't expect you to mangle their chains, consider a one-element sg array. :( Cheers, Rusty. - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
