TP_FIELDS(
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
- ctf_integer(dev_t, dev, bio_dev(bio))
+ ctf_integer(dev_t, dev, bio ? bio_dev(bio) : 0)
#else
ctf_integer(dev_t, dev, bio ? bio->bi_bdev->bd_dev : 0)
#endif
/**
* block_getrq - get a free request entry in queue for block IO operations
* @q: queue for operations
- * @bio: pending block IO operation
+ * @bio: pending block IO operation (can be %NULL)
* @rw: low bit indicates a read (%0) or a write (%1)
*
* A request struct for queue @q has been allocated to handle the
/**
* block_sleeprq - waiting to get a free request entry in queue for block IO operation
* @q: queue for operation
- * @bio: pending block IO operation
+ * @bio: pending block IO operation (can be %NULL)
* @rw: low bit indicates a read (%0) or a write (%1)
*
* In the case where a request struct cannot be provided for queue @q