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net/sock: Update sk rcu iterator macro.

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Mark hlist node in sk rcu iterator as protected by the rcu.
hlist_next_rcu accomplishes this and silences the warnings
sparse throws.

Found with make C=1 net/ipv4/udp.o on linux-next tag
next-20171009.

Signed-off-by: Tim Hansen <devtimhansen@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tim Hansen
2017-10-23 15:35:58 -04:00
committed by David S. Miller
parent 49ca1943a7
commit b6f4f8484d
1 changed files with 2 additions and 2 deletions
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4
include/net/sock.h
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@@ -737,10 +737,10 @@ static inline void sk_add_bind_node(struct sock *sk,
* *
*/ */
#define sk_for_each_entry_offset_rcu(tpos, pos, head, offset) \ #define sk_for_each_entry_offset_rcu(tpos, pos, head, offset) \
for (pos = rcu_dereference((head)->first); \ for (pos = rcu_dereference(hlist_first_rcu(head)); \
pos != NULL && \ pos != NULL && \
({ tpos = (typeof(*tpos) *)((void *)pos - offset); 1;}); \ ({ tpos = (typeof(*tpos) *)((void *)pos - offset); 1;}); \
pos = rcu_dereference(pos->next)) pos = rcu_dereference(hlist_next_rcu(pos)))
static inline struct user_namespace *sk_user_ns(struct sock *sk) static inline struct user_namespace *sk_user_ns(struct sock *sk)
{ {