496 static enum netfs_io_source cachefiles_prepare_read(struct netfs_io_subrequest *subreq,  in cachefiles_prepare_read()  argument
499 	return cachefiles_do_prepare_read(&subreq->rreq->cache_resources,  in cachefiles_prepare_read()
500 					  subreq->start, &subreq->len, i_size,  in cachefiles_prepare_read()
501 					  &subreq->flags, subreq->rreq->inode->i_ino);  in cachefiles_prepare_read()
626 static void cachefiles_prepare_write_subreq(struct netfs_io_subrequest *subreq)  in cachefiles_prepare_write_subreq()  argument
628 	struct netfs_io_request *wreq = subreq->rreq;  in cachefiles_prepare_write_subreq()
630 	struct netfs_io_stream *stream = &wreq->io_streams[subreq->stream_nr];  in cachefiles_prepare_write_subreq()
632 	_enter("W=%x[%x] %llx", wreq->debug_id, subreq->debug_index, subreq->start);  in cachefiles_prepare_write_subreq()
639 			return netfs_prepare_write_failed(subreq);  in cachefiles_prepare_write_subreq()
641 			return netfs_prepare_write_failed(subreq);  in cachefiles_prepare_write_subreq()
645 static void cachefiles_issue_write(struct netfs_io_subrequest *subreq)  in cachefiles_issue_write()  argument
647 	struct netfs_io_request *wreq = subreq->rreq;  in cachefiles_issue_write()
651 	struct netfs_io_stream *stream = &wreq->io_streams[subreq->stream_nr];  in cachefiles_issue_write()
653 	size_t off, pre, post, len = subreq->len;  in cachefiles_issue_write()
654 	loff_t start = subreq->start;  in cachefiles_issue_write()
658 	       wreq->debug_id, subreq->debug_index, start, start + len - 1);  in cachefiles_issue_write()
666 			netfs_write_subrequest_terminated(subreq, len);  in cachefiles_issue_write()
669 		subreq->transferred += pre;  in cachefiles_issue_write()
672 		iov_iter_advance(&subreq->io_iter, pre);  in cachefiles_issue_write()
682 			subreq->len += need;  in cachefiles_issue_write()
683 			subreq->io_iter.count += need;  in cachefiles_issue_write()
692 			netfs_write_subrequest_terminated(subreq, post);  in cachefiles_issue_write()
695 		iov_iter_truncate(&subreq->io_iter, len);  in cachefiles_issue_write()
698 	trace_netfs_sreq(subreq, netfs_sreq_trace_cache_prepare);  in cachefiles_issue_write()
704 		netfs_write_subrequest_terminated(subreq, ret);  in cachefiles_issue_write()
708 	trace_netfs_sreq(subreq, netfs_sreq_trace_cache_write);  in cachefiles_issue_write()
709 	cachefiles_write(&subreq->rreq->cache_resources,  in cachefiles_issue_write()
710 			 subreq->start, &subreq->io_iter,  in cachefiles_issue_write()
711 			 netfs_write_subrequest_terminated, subreq);  in cachefiles_issue_write()