151 	if (chan->n_subbufs > KMALLOC_MAX_SIZE / sizeof(size_t))  in relay_create_buf()
157 	buf->padding = kmalloc_array(chan->n_subbufs, sizeof(size_t),  in relay_create_buf()
244 	return (ready >= buf->chan->n_subbufs) ? 1 : 0;  in relay_buf_full()
302 	for (i = 0; i < buf->chan->n_subbufs; i++)  in __relay_reset()
477 			 size_t n_subbufs,  in relay_open()  argument
485 	if (!(subbuf_size && n_subbufs))  in relay_open()
487 	if (subbuf_size > UINT_MAX / n_subbufs)  in relay_open()
503 	chan->n_subbufs = n_subbufs;  in relay_open()
505 	chan->alloc_size = PAGE_ALIGN(subbuf_size * n_subbufs);  in relay_open()
669 		old_subbuf = buf->subbufs_produced % buf->chan->n_subbufs;  in relay_switch_subbuf()
692 	new_subbuf = buf->subbufs_produced % buf->chan->n_subbufs;  in relay_switch_subbuf()
736 	if (!buf || subbufs_consumed > chan->n_subbufs)  in relay_subbufs_consumed()
883 	size_t n_subbufs = buf->chan->n_subbufs;  in relay_file_read_consume()  local
897 		read_subbuf = buf->subbufs_consumed % n_subbufs;  in relay_file_read_consume()
901 		if ((read_subbuf == buf->subbufs_produced % n_subbufs) &&  in relay_file_read_consume()
915 	size_t n_subbufs = buf->chan->n_subbufs;  in relay_file_read_avail()  local
929 	if (unlikely(produced - consumed >= n_subbufs)) {  in relay_file_read_avail()
930 		consumed = produced - n_subbufs + 1;  in relay_file_read_avail()
935 	produced = (produced % n_subbufs) * subbuf_size + buf->offset;  in relay_file_read_avail()
936 	consumed = (consumed % n_subbufs) * subbuf_size + buf->bytes_consumed;  in relay_file_read_avail()
939 		produced += n_subbufs * subbuf_size;  in relay_file_read_avail()
990 	size_t n_subbufs = buf->chan->n_subbufs;  in relay_file_read_start_pos()  local
991 	size_t consumed = buf->subbufs_consumed % n_subbufs;  in relay_file_read_start_pos()
993 			% (n_subbufs * subbuf_size);  in relay_file_read_start_pos()
1000 		read_subbuf = (read_subbuf + 1) % n_subbufs;  in relay_file_read_start_pos()
1019 	size_t n_subbufs = buf->chan->n_subbufs;  in relay_file_read_end_pos()  local
1027 	if (end_pos >= subbuf_size * n_subbufs)  in relay_file_read_end_pos()