Cantrill found that dbuf_verify() was the most called zfs function for getdents64()
when doing a simple tar.
But here's ZFS:
dmu_buf_get_user 1092
dnode_verify 1092
kmem_cache_free 1093
kmem_cache_alloc 1093
dbuf_whichblock 1364
dbuf_hold_impl 1451
dbuf_read_generic 1451
dbuf_rele 1451
dnode_add_ref 1451
dbuf_find 1723
dbuf_add_ref 1724
dbuf_remove_ref 1724
mutex_owned 1861
dbuf_update_data 1997
avl_nearest 2181
avl_find 2181
dbuf_hash 2269
dnode_rele 2270
stv 2516
dbuf_verify 3448
Note dnode_verify() is there too.
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