Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6

[sfrench/cifs-2.6.git] / ipc / msg.c

diff --git a/ipc/msg.c b/ipc/msg.c
index fdf3db5731ce8df2cfd038f40c69710243d85338..ec0c724054b95ce733eee1510d044df7d95bea20 100644 (file)
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -105,6 +105,7 @@ int msg_init_ns(struct ipc_namespace *ns)
 void msg_exit_ns(struct ipc_namespace *ns)
 {
        struct msg_queue *msq;
+       struct kern_ipc_perm *perm;
        int next_id;
        int total, in_use;
 
@@ -113,10 +114,11 @@ void msg_exit_ns(struct ipc_namespace *ns)
        in_use = msg_ids(ns).in_use;
 
        for (total = 0, next_id = 0; total < in_use; next_id++) {
-               msq = idr_find(&msg_ids(ns).ipcs_idr, next_id);
-               if (msq == NULL)
+               perm = idr_find(&msg_ids(ns).ipcs_idr, next_id);
+               if (perm == NULL)
                        continue;
-               ipc_lock_by_ptr(&msq->q_perm);
+               ipc_lock_by_ptr(perm);
+               msq = container_of(perm, struct msg_queue, q_perm);
                freeque(ns, msq);
                total++;
        }
@@ -144,6 +146,9 @@ static inline struct msg_queue *msg_lock_check_down(struct ipc_namespace *ns,
 {
        struct kern_ipc_perm *ipcp = ipc_lock_check_down(&msg_ids(ns), id);
 
+       if (IS_ERR(ipcp))
+               return (struct msg_queue *)ipcp;
+
        return container_of(ipcp, struct msg_queue, q_perm);
 }
 
@@ -155,6 +160,9 @@ static inline struct msg_queue *msg_lock(struct ipc_namespace *ns, int id)
 {
        struct kern_ipc_perm *ipcp = ipc_lock(&msg_ids(ns), id);
 
+       if (IS_ERR(ipcp))
+               return (struct msg_queue *)ipcp;
+
        return container_of(ipcp, struct msg_queue, q_perm);
 }
 
@@ -163,6 +171,9 @@ static inline struct msg_queue *msg_lock_check(struct ipc_namespace *ns,
 {
        struct kern_ipc_perm *ipcp = ipc_lock_check(&msg_ids(ns), id);
 
+       if (IS_ERR(ipcp))
+               return (struct msg_queue *)ipcp;
+
        return container_of(ipcp, struct msg_queue, q_perm);
 }