cfs_atomic_sub_and_test||atomic_sub_and_test
cfs_atomic_sub_return||atomic_sub_return
cfs_atomic_t||atomic_t
+cfs_get_random_bytes/get_random_bytes
cfs_hash_bd_t||struct cfs_hash_bd
cfs_hash_bucket_t||struct cfs_hash_bucket
cfs_hash_cond_arg_t||struct cfs_hash_cond_arg