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rhashtable: fix annotations for rht_for_each_entry_rcu() 

Call rcu_deference_raw() directly from within rht_for_each_entry_rcu()
as list_for_each_entry_rcu() does.

Fixes the following sparse warnings:
net/netlink/af_netlink.c:2906:25:    expected struct rhash_head const *__mptr
net/netlink/af_netlink.c:2906:25:    got struct rhash_head [noderef] <asn:4>*<noident>

Fixes: e341694e3e ("netlink: Convert netlink_lookup() to use RCU protected hash table")
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Thomas Graf 2014-08-13 16:38:31 +02:00 committed by David S. Miller
parent c91eee56dc
commit 93f560811e
1 changed files with 4 additions and 8 deletions
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12
include/linux/rhashtable.h
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@ -123,11 +123,6 @@ void rhashtable_destroy(const struct rhashtable *ht);
typeof(ptr) __ptr = (ptr); \
__ptr ? rht_entry(__ptr, type, member) : NULL; \
})
#define rht_entry_safe_rcu(ptr, type, member) \
({ \
typeof(*ptr) __rcu *__ptr = (typeof(*ptr) __rcu __force *)ptr; \
__ptr ? container_of((typeof(ptr))rcu_dereference_raw(__ptr), type, member) : NULL; \
})
#define rht_next_entry_safe(pos, ht, member) \
({ \
@ -204,9 +199,10 @@ void rhashtable_destroy(const struct rhashtable *ht);
* traversal is guarded by rcu_read_lock().
*/
#define rht_for_each_entry_rcu(pos, head, member) \
for (pos = rht_entry_safe_rcu(head, typeof(*(pos)), member); \
for (pos = rht_entry_safe(rcu_dereference_raw(head), \
typeof(*(pos)), member); \
pos; \
pos = rht_entry_safe_rcu((pos)->member.next, \
typeof(*(pos)), member))
pos = rht_entry_safe(rcu_dereference_raw((pos)->member.next), \
typeof(*(pos)), member))
#endif /* _LINUX_RHASHTABLE_H */