On Mon, Oct 15, 2018 at 8:56 AM Christoph Hellwig <hch@xxxxxx> wrote: > > There is no good reason to create a scatterlist in the ubd driver, > it can just iterate the request directly. BTW: Does it make sense to drop blk_rq_map_sq from() drivers/mtd/ubi/block.c too? If so we have to allocate a temporary structure for the worker thread for each segment, just like UBD does already. I'm not sure if that is cheaper than blk_rq_map_sq(). -- Thanks, //richard
