Eric Dumazet 9620fef27e ipv4: convert dst_metrics.refcnt from atomic_t to refcount_t ...

refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2017-08-18 15:14:07 -07:00

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