842 	cursor->resid = min_t(size_t, length, data->bio_length);  in ceph_msg_data_bio_cursor_init()
844 	if (cursor->resid < it->iter.bi_size)  in ceph_msg_data_bio_cursor_init()
845 		it->iter.bi_size = cursor->resid;  in ceph_msg_data_bio_cursor_init()
847 	BUG_ON(cursor->resid < bio_iter_len(it->bio, it->iter));  in ceph_msg_data_bio_cursor_init()
848 	cursor->last_piece = cursor->resid == bio_iter_len(it->bio, it->iter);  in ceph_msg_data_bio_cursor_init()
868 	BUG_ON(bytes > cursor->resid);  in ceph_msg_data_bio_advance()
870 	cursor->resid -= bytes;  in ceph_msg_data_bio_advance()
873 	if (!cursor->resid) {  in ceph_msg_data_bio_advance()
884 		if (cursor->resid < it->iter.bi_size)  in ceph_msg_data_bio_advance()
885 			it->iter.bi_size = cursor->resid;  in ceph_msg_data_bio_advance()
889 	BUG_ON(cursor->resid < bio_iter_len(it->bio, it->iter));  in ceph_msg_data_bio_advance()
890 	cursor->last_piece = cursor->resid == bio_iter_len(it->bio, it->iter);  in ceph_msg_data_bio_advance()
901 	cursor->resid = min_t(size_t, length, data->bvec_pos.iter.bi_size);  in ceph_msg_data_bvecs_cursor_init()
903 	cursor->bvec_iter.bi_size = cursor->resid;  in ceph_msg_data_bvecs_cursor_init()
905 	BUG_ON(cursor->resid < bvec_iter_len(bvecs, cursor->bvec_iter));  in ceph_msg_data_bvecs_cursor_init()
907 	    cursor->resid == bvec_iter_len(bvecs, cursor->bvec_iter);  in ceph_msg_data_bvecs_cursor_init()
927 	BUG_ON(bytes > cursor->resid);  in ceph_msg_data_bvecs_advance()
929 	cursor->resid -= bytes;  in ceph_msg_data_bvecs_advance()
932 	if (!cursor->resid) {  in ceph_msg_data_bvecs_advance()
941 	BUG_ON(cursor->resid < bvec_iter_len(bvecs, cursor->bvec_iter));  in ceph_msg_data_bvecs_advance()
943 	    cursor->resid == bvec_iter_len(bvecs, cursor->bvec_iter);  in ceph_msg_data_bvecs_advance()
962 	cursor->resid = min(length, data->length);  in ceph_msg_data_pages_cursor_init()
969 	cursor->last_piece = cursor->page_offset + cursor->resid <= PAGE_SIZE;  in ceph_msg_data_pages_cursor_init()
985 		*length = cursor->resid;  in ceph_msg_data_pages_next()
1001 	cursor->resid -= bytes;  in ceph_msg_data_pages_advance()
1006 	if (!cursor->resid)  in ceph_msg_data_pages_advance()
1013 	cursor->last_piece = cursor->resid <= PAGE_SIZE;  in ceph_msg_data_pages_advance()
1041 	cursor->resid = min(length, pagelist->length);  in ceph_msg_data_pagelist_cursor_init()
1044 	cursor->last_piece = cursor->resid <= PAGE_SIZE;  in ceph_msg_data_pagelist_cursor_init()
1060 	BUG_ON(cursor->offset + cursor->resid != pagelist->length);  in ceph_msg_data_pagelist_next()
1065 		*length = cursor->resid;  in ceph_msg_data_pagelist_next()
1083 	BUG_ON(cursor->offset + cursor->resid != pagelist->length);  in ceph_msg_data_pagelist_advance()
1088 	cursor->resid -= bytes;  in ceph_msg_data_pagelist_advance()
1094 	if (!cursor->resid)  in ceph_msg_data_pagelist_advance()
1101 	cursor->last_piece = cursor->resid <= PAGE_SIZE;  in ceph_msg_data_pagelist_advance()
1193 	BUG_ON(*length > cursor->resid);  in ceph_msg_data_next()
1209 	BUG_ON(bytes > cursor->resid);  in ceph_msg_data_advance()
1232 	if (!cursor->resid && cursor->total_resid) {  in ceph_msg_data_advance()
1612 		if (!cursor->resid) {  in write_partial_message_data()
2357 		if (!cursor->resid) {  in read_partial_msg_data()