virt_block_begin 1424 drivers/md/dm-thin.c sector_t virt_block_begin = virt_block * pool->sectors_per_block; virt_block_begin 1432 drivers/md/dm-thin.c else if (virt_block_begin < tc->origin_size) virt_block_begin 1435 drivers/md/dm-thin.c tc->origin_size - virt_block_begin);