ucount: Fix atomic_long_inc_below argument type

The type of u argument of atomic_long_inc_below should be long
to avoid unwanted truncation to int.

Fixes: f9c82a4e ("Increase size of ucounts to atomic_long_t")
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Link: https://lkml.kernel.org/r/20221017144049.3404-2-ubizjak@gmail.com


Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>