sunrpc: Pass the ip_map_parse's cd to lower calls

The target is to have many ip_map_cache-s in the system. This particular
patch handles its usage by the ip_map_parse callback.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index e91b550bc8362ef5ff53dd0b85aa43f2bb45d6e2..31b99c599e7e58376d989da0b5b6ee1f7469bb3d 100644 (file)
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -178,8 +178,8 @@ static int ip_map_upcall(struct cache_detail *cd, struct cache_head *h)
        return sunrpc_cache_pipe_upcall(cd, h, ip_map_request);
 }
 
-static struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr);
-static int ip_map_update(struct ip_map *ipm, struct unix_domain *udom, time_t expiry);
+static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class, struct in6_addr *addr);
+static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm, struct unix_domain *udom, time_t expiry);
 
 static int ip_map_parse(struct cache_detail *cd,
                          char *mesg, int mlen)
@@ -249,9 +249,9 @@ static int ip_map_parse(struct cache_detail *cd,
                dom = NULL;
 
        /* IPv6 scope IDs are ignored for now */
-       ipmp = ip_map_lookup(class, &sin6.sin6_addr);
+       ipmp = __ip_map_lookup(cd, class, &sin6.sin6_addr);
        if (ipmp) {
-               err = ip_map_update(ipmp,
+               err = __ip_map_update(cd, ipmp,
                             container_of(dom, struct unix_domain, h),
                             expiry);
        } else
@@ -309,14 +309,15 @@ struct cache_detail ip_map_cache = {
        .alloc          = ip_map_alloc,
 };
 
-static struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr)
+static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class,
+               struct in6_addr *addr)
 {
        struct ip_map ip;
        struct cache_head *ch;
 
        strcpy(ip.m_class, class);
        ipv6_addr_copy(&ip.m_addr, addr);
-       ch = sunrpc_cache_lookup(&ip_map_cache, &ip.h,
+       ch = sunrpc_cache_lookup(cd, &ip.h,
                                 hash_str(class, IP_HASHBITS) ^
                                 hash_ip6(*addr));
 
@@ -326,7 +327,13 @@ static struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr)
                return NULL;
 }
 
-static int ip_map_update(struct ip_map *ipm, struct unix_domain *udom, time_t expiry)
+static inline struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr)
+{
+       return __ip_map_lookup(&ip_map_cache, class, addr);
+}
+
+static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm,
+               struct unix_domain *udom, time_t expiry)
 {
        struct ip_map ip;
        struct cache_head *ch;
@@ -344,16 +351,20 @@ static int ip_map_update(struct ip_map *ipm, struct unix_domain *udom, time_t ex
                        ip.m_add_change++;
        }
        ip.h.expiry_time = expiry;
-       ch = sunrpc_cache_update(&ip_map_cache,
-                                &ip.h, &ipm->h,
+       ch = sunrpc_cache_update(cd, &ip.h, &ipm->h,
                                 hash_str(ipm->m_class, IP_HASHBITS) ^
                                 hash_ip6(ipm->m_addr));
        if (!ch)
                return -ENOMEM;
-       cache_put(ch, &ip_map_cache);
+       cache_put(ch, cd);
        return 0;
 }
 
+static inline int ip_map_update(struct ip_map *ipm, struct unix_domain *udom, time_t expiry)
+{
+       return __ip_map_update(&ip_map_cache, ipm, udom, expiry);
+}
+
 int auth_unix_add_addr(struct in6_addr *addr, struct auth_domain *dom)
 {
        struct unix_domain *udom;