730 	cursor->resid = min_t(size_t, length, data->bio_length);  in ceph_msg_data_bio_cursor_init()
732 	if (cursor->resid < it->iter.bi_size)  in ceph_msg_data_bio_cursor_init()
733 		it->iter.bi_size = cursor->resid;  in ceph_msg_data_bio_cursor_init()
735 	BUG_ON(cursor->resid < bio_iter_len(it->bio, it->iter));  in ceph_msg_data_bio_cursor_init()
756 	BUG_ON(bytes > cursor->resid);  in ceph_msg_data_bio_advance()
758 	cursor->resid -= bytes;  in ceph_msg_data_bio_advance()
761 	if (!cursor->resid)  in ceph_msg_data_bio_advance()
771 		if (cursor->resid < it->iter.bi_size)  in ceph_msg_data_bio_advance()
772 			it->iter.bi_size = cursor->resid;  in ceph_msg_data_bio_advance()
775 	BUG_ON(cursor->resid < bio_iter_len(it->bio, it->iter));  in ceph_msg_data_bio_advance()
786 	cursor->resid = min_t(size_t, length, data->bvec_pos.iter.bi_size);  in ceph_msg_data_bvecs_cursor_init()
788 	cursor->bvec_iter.bi_size = cursor->resid;  in ceph_msg_data_bvecs_cursor_init()
790 	BUG_ON(cursor->resid < bvec_iter_len(bvecs, cursor->bvec_iter));  in ceph_msg_data_bvecs_cursor_init()
811 	BUG_ON(bytes > cursor->resid);  in ceph_msg_data_bvecs_advance()
813 	cursor->resid -= bytes;  in ceph_msg_data_bvecs_advance()
816 	if (!cursor->resid)  in ceph_msg_data_bvecs_advance()
823 	BUG_ON(cursor->resid < bvec_iter_len(bvecs, cursor->bvec_iter));  in ceph_msg_data_bvecs_advance()
842 	cursor->resid = min(length, data->length);  in ceph_msg_data_pages_cursor_init()
863 	*length = min_t(size_t, cursor->resid, PAGE_SIZE - *page_offset);  in ceph_msg_data_pages_next()
876 	cursor->resid -= bytes;  in ceph_msg_data_pages_advance()
881 	if (!cursor->resid)  in ceph_msg_data_pages_advance()
914 	cursor->resid = min(length, pagelist->length);  in ceph_msg_data_pagelist_cursor_init()
932 	BUG_ON(cursor->offset + cursor->resid != pagelist->length);  in ceph_msg_data_pagelist_next()
936 	*length = min_t(size_t, cursor->resid, PAGE_SIZE - *page_offset);  in ceph_msg_data_pagelist_next()
951 	BUG_ON(cursor->offset + cursor->resid != pagelist->length);  in ceph_msg_data_pagelist_advance()
956 	cursor->resid -= bytes;  in ceph_msg_data_pagelist_advance()
962 	if (!cursor->resid)  in ceph_msg_data_pagelist_advance()
980 	cursor->resid = iov_iter_count(&cursor->iov_iter);  in ceph_msg_data_iter_cursor_init()
1008 	*length = min_t(size_t, len, cursor->resid);  in ceph_msg_data_iter_next()
1015 	BUG_ON(bytes > cursor->resid);  in ceph_msg_data_iter_advance()
1016 	cursor->resid -= bytes;  in ceph_msg_data_iter_advance()
1025 	return cursor->resid;  in ceph_msg_data_iter_advance()
1117 	BUG_ON(*length > cursor->resid);  in ceph_msg_data_next()
1130 	BUG_ON(bytes > cursor->resid);  in ceph_msg_data_advance()
1156 	if (!cursor->resid && cursor->total_resid) {  in ceph_msg_data_advance()