cache_block_io
if (cache_block_io(dev, bnum, NULL, 1, bsize, CACHE_READ|CACHE_LOCKED|CACHE_READ_AHEAD_OK,
if (cache_block_io(dev, bnum, NULL, 1, bsize, CACHE_NOOP|CACHE_LOCKED,
return cache_block_io(dev, bnum, data, num_blocks, bsize,
return cache_block_io(dev, bnum, (void *)data, num_blocks, bsize,
return cache_block_io(dev, bnum, (void *)data, num_blocks, bsize,