taglinefilesource code
rblocks160fs/block_dev.cunsigned int blocks, rblocks, left;
rblocks203fs/block_dev.crblocks = blocks = (left + offset + blocksize - 1) >> blocksize_bits;
rblocks209fs/block_dev.cif (rblocks > blocks)
rblocks210fs/block_dev.cblocks = rblocks;