CRED: Separate task security context from task_struct

Separate the task security context from task_struct.  At this point, the
security data is temporarily embedded in the task_struct with two pointers
pointing to it.

Note that the Alpha arch is altered as it refers to (E)UID and (E)GID in
entry.S via asm-offsets.

With comment fixes Signed-off-by: Marc Dionne <marc.c.dionne@gmail.com>

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/user.c b/kernel/user.c
index 39d6159fae43..104d22ac84d5 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -457,11 +457,11 @@ void switch_uid(struct user_struct *new_user)
          * cheaply with the new uid cache, so if it matters
          * we should be checking for it.  -DaveM
          */
-        old_user = current->user;
+        old_user = current->cred->user;
         atomic_inc(&new_user->processes);
         atomic_dec(&old_user->processes);
         switch_uid_keyring(new_user);
-        current->user = new_user;
+        current->cred->user = new_user;
         sched_switch_user(current);
 
         /*