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H A Daddrconf.cdiff e500c6d349f7f36120886841c6f057ce248b48b2 Wed Aug 22 14:58:34 CDT 2018 Cong Wang <xiyou.wangcong@gmail.com> addrconf: reduce unnecessary atomic allocations

All the 3 callers of addrconf_add_mroute() assert RTNL
lock, they don't take any additional lock either, so
it is safe to convert it to GFP_KERNEL.

Same for sit_add_v4_addrs().

Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>