I understand that atomic_dec_and_test returns 1 when the result of the
operation is 0, and 0 otherwise.
I've seen two ways of handling the resulting operation, below are a couple
of examples:
(1) if (!atomic_dec_and_test(&rd->refcount))
return;
call_rcu(&rd->rcu, free_rootdomain);
(2) if (atomic64_dec_and_test(&map->refcnt)) {
/* bpf_map_free_id() must be called first */
...
}
Is it prefered to use one option over the other? Or is it just personal
preference?
Thanks in advance!
Camila Alvarez
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