[Linaro-mm-sig] Re: [RFC v2 02/11] iov_iter: introduce iter type for pre-registered dma

+void iov_iter_dma_token(struct iov_iter *i, unsigned int direction,

•                   struct dma_token *token,
  

•                   loff_t off, size_t count)
  

+{

•   WARN_ON(direction & ~(READ | WRITE));
  

•   *i = (struct iov_iter){
  

•           .iter_type = ITER_DMA_TOKEN,
  

•           .data_source = direction,
  

•           .dma_token = token,
  

•           .iov_offset = 0,
  

nit: iov_offset is getting below too. can get rid of this one.

•           .count = count,
  

•           .iov_offset = off,
  

•   };