drivers/vhost/vringh.c

295 	     struct vringh_kiov *wiov,
316 	if (WARN_ON(!riov && !wiov))
321 	if (wiov)
322 		wiov->i = wiov->used = wiov->consumed = 0;
374 			iov = wiov;
377 			if (unlikely(wiov && wiov->used)) {
387 				   !wiov ? "writable" : "readable");
687  * @wiov: where to put the writable descriptors (or NULL)
698  * Note that you can reuse riov and wiov with subsequent calls. Content is
700  * When you don't have to use riov and wiov anymore, you should clean up them
705 			struct vringh_iov *wiov,
743 			   (struct vringh_kiov *)wiov,
769  * @wiov: the wiov as passed to vringh_getdesc_user() (updated as we consume)
775 ssize_t vringh_iov_push_user(struct vringh_iov *wiov,
778 	return vringh_iov_xfer(NULL, (struct vringh_kiov *)wiov,
960  * @wiov: where to put the writable descriptors (or NULL)
962  * @gfp: flags for allocating larger riov/wiov.
971  * Note that you can reuse riov and wiov with subsequent calls. Content is
973  * When you don't have to use riov and wiov anymore, you should clean up them
978 			struct vringh_kiov *wiov,
993 	err = __vringh_iov(vrh, *head, riov, wiov, no_range_check, NULL,
1018  * @wiov: the wiov as passed to vringh_getdesc_kern() (updated as we consume)
1024 ssize_t vringh_iov_push_kern(struct vringh_kiov *wiov,
1027 	return vringh_iov_xfer(NULL, wiov, (void *)src, len, kern_xfer);
1464  * @wiov: where to put the writable descriptors (or NULL)
1466  * @gfp: flags for allocating larger riov/wiov.
1475  * Note that you can reuse riov and wiov with subsequent calls. Content is
1477  * When you don't have to use riov and wiov anymore, you should clean up them
1482 			 struct vringh_kiov *wiov,
1497 	err = __vringh_iov(vrh, *head, riov, wiov, no_range_check, NULL,
1526  * @wiov: the wiov as passed to vringh_getdesc_iotlb() (updated as we consume)
1533 			      struct vringh_kiov *wiov,
1536 	return vringh_iov_xfer(vrh, wiov, (void *)src, len, xfer_to_iotlb);