Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 11 insertions, 3 deletions

diff --git a/include/linux/cred.h b/include/linux/cred.h
index 4d2c39573f36..82607992f308 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -1,4 +1,4 @@
-/* Credentials management - see Documentation/credentials.txt
+/* Credentials management - see Documentation/security/credentials.txt
  *
  * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells (dhowells@redhat.com)
@@ -84,7 +84,7 @@ struct thread_group_cred {
         atomic_t        usage;
         pid_t           tgid;                   /* thread group process ID */
         spinlock_t      lock;
-        struct key      *session_keyring;       /* keyring inherited over fork */
+        struct key __rcu *session_keyring;      /* keyring inherited over fork */
         struct key      *process_keyring;       /* keyring private to this process */
         struct rcu_head rcu;                    /* RCU deletion hook */
 };
@@ -146,6 +146,7 @@ struct cred {
         void            *security;      /* subjective LSM security */
 #endif
         struct user_struct *user;       /* real user ID subscription */
+        struct user_namespace *user_ns; /* cached user->user_ns */
         struct group_info *group_info;  /* supplementary groups for euid/fsgid */
         struct rcu_head rcu;            /* RCU deletion hook */
 };
@@ -354,9 +355,16 @@ static inline void put_cred(const struct cred *_cred)
 #define current_fsgid()         (current_cred_xxx(fsgid))
 #define current_cap()           (current_cred_xxx(cap_effective))
 #define current_user()          (current_cred_xxx(user))
-#define current_user_ns()       (current_cred_xxx(user)->user_ns)
 #define current_security()      (current_cred_xxx(security))
 
+#ifdef CONFIG_USER_NS
+#define current_user_ns() (current_cred_xxx(user_ns))
+#else
+extern struct user_namespace init_user_ns;
+#define current_user_ns() (&init_user_ns)
+#endif
+
+
 #define current_uid_gid(_uid, _gid)             \
 do {                                            \
         const struct cred *__cred;              \