Ming Lei <ming.lei@xxxxxxxxxx> wrote: > All iov_iter_bvec() users only want to extract virt-contiguous pages from > iov_iter_extract_pages() instead physical-contiguous pages. What do you mean by "virt-contiguous"? Virtual according to what mapping? The reason for physical contiguity is that you can pass a set of physical contiguous pages as a single DMA descriptor. Therefore, at some point, you might end up screwing up skb_splice_from_iter(). Currently, that's limited to a PAGE_SIZE per fragment, but hopefully that will be fixed at some point. David
