On Sun, 2 Dec 2018, Hannes Reinecke wrote: > Well, that lone 'kmap' is due to a quirk/errata in the datasheet; essentially > we have to PIO a lone byte out of the FIFO to clear it up. > And this byte is technically still part of the SCSI data, so we need to > stuff it onto the end of the actual data sg list. Which is what the kmap() > thingie does. > So it really shouldn't be affected by the clustering algorithm. > Sorry, I don't follow. If it's dead code, can it be removed? If it's not, does it require DISABLE_CLUSTERING? -- > Cheers, > > Hannes >