On Wed, Apr 01, 2020 at 08:42:48AM -0700, Christoph Hellwig wrote: > OTOH the len argument / return value seems like something that would > seems useful in the iter structure. That would require renaming the > current len to something like total_len.. Ah, I remembered why I didn't do it that way. For more complicated users (eg readahead ...), we want to be able to pass an errno here. Then iomap_iter() will call ops->iomap_end() and return the errno you passed in, and we can terminate the loop.
