bdev_discard_alignment
EXPORT_SYMBOL_GPL(bdev_discard_alignment);
return sprintf(buf, "%u\n", bdev_discard_alignment(dev_to_bdev(dev)));
alignment = (bdev_discard_alignment(bdev) >> 9) % granularity;
rsp->discard_alignment = cpu_to_le32(bdev_discard_alignment(bdev));
bdev_discard_alignment(bdev));
bdev_discard_alignment(bdev) / block_size;
unsigned int bdev_discard_alignment(struct block_device *bdev);