SUNRPC: Make server side AUTH_UNIX use lockless lookups (fd5d2f78) · Commits · 戴 / test

net/sunrpc/svcauth_unix.c

+8 −6

Original line number	Diff line number	Diff line
		@@ -97,6 +97,7 @@ struct ip_map {
		char m_class[8]; /* e.g. "nfsd" */
		struct in6_addr m_addr;
		struct unix_domain *m_client;
		struct rcu_head m_rcu;
		};

		static void ip_map_put(struct kref *kref)
		@@ -107,7 +108,7 @@ static void ip_map_put(struct kref *kref)
		if (test_bit(CACHE_VALID, &item->flags) &&
		!test_bit(CACHE_NEGATIVE, &item->flags))
		auth_domain_put(&im->m_client->h);
		kfree(im);
		kfree_rcu(im, m_rcu);
		}

		static inline int hash_ip6(const struct in6_addr *ip)
		@@ -286,7 +287,7 @@ static struct ip_map __ip_map_lookup(struct cache_detail cd, char *class,

		strcpy(ip.m_class, class);
		ip.m_addr = *addr;
		ch = sunrpc_cache_lookup(cd, &ip.h,
		ch = sunrpc_cache_lookup_rcu(cd, &ip.h,
		hash_str(class, IP_HASHBITS) ^
		hash_ip6(addr));

		@@ -418,6 +419,7 @@ struct unix_gid {
		struct cache_head h;
		kuid_t uid;
		struct group_info *gi;
		struct rcu_head rcu;
		};

		static int unix_gid_hash(kuid_t uid)
		@@ -432,7 +434,7 @@ static void unix_gid_put(struct kref *kref)
		if (test_bit(CACHE_VALID, &item->flags) &&
		!test_bit(CACHE_NEGATIVE, &item->flags))
		put_group_info(ug->gi);
		kfree(ug);
		kfree_rcu(ug, rcu);
		}

		static int unix_gid_match(struct cache_head corig, struct cache_head cnew)
		@@ -625,7 +627,7 @@ static struct unix_gid unix_gid_lookup(struct cache_detail cd, kuid_t uid)
		struct cache_head *ch;

		ug.uid = uid;
		ch = sunrpc_cache_lookup(cd, &ug.h, unix_gid_hash(uid));
		ch = sunrpc_cache_lookup_rcu(cd, &ug.h, unix_gid_hash(uid));
		if (ch)
		return container_of(ch, struct unix_gid, h);
		else