tree 14ee9ec0f2e759bb237b2a010aa56989874cc054
parent db5bce32fbe19f0c7482fb5a40a33178bbe7b11b
author Eric Dumazet <edumazet@google.com> 1504223302 -0700
committer David S. Miller <davem@davemloft.net> 1504322523 -0700

net: convert (struct ubuf_info)->refcnt 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.

v2: added the change in drivers/vhost/net.c as spotted
by Willem.

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