r5l_ring_add
offset = r5l_ring_add(log, offset, BLOCK_SECTORS);
r5l_ring_add(log, log_offset, BLOCK_SECTORS));
sector_t log_offset = r5l_ring_add(log, ctx->pos, BLOCK_SECTORS);
r5l_ring_add(log, log_offset,
log_offset = r5l_ring_add(log, log_offset,
log_offset = r5l_ring_add(log, ctx->pos, BLOCK_SECTORS);
log_offset = r5l_ring_add(log, log_offset,
ctx->pos = r5l_ring_add(log, ctx->pos, ctx->meta_total_blocks);
write_pos = r5l_ring_add(log, ctx->pos, BLOCK_SECTORS);
write_pos = r5l_ring_add(log, write_pos,
ctx->pos = r5l_ring_add(log, ctx->pos, BLOCK_SECTORS);
log->log_start = r5l_ring_add(log, cp, BLOCK_SECTORS);
log->log_start = r5l_ring_add(log, log->log_start, BLOCK_SECTORS);