CRED: Separate per-task-group keyrings from signal_struct

Separate per-task-group keyrings from signal_struct and dangle their anchor
from the cred struct rather than the signal_struct.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: James Morris <jmorris@namei.org>
Signed-off-by: James Morris <jmorris@namei.org>

1 files changed, 0 insertions, 7 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index c932e283ddfc..ded1972672a3 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -802,12 +802,6 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)
         if (!sig)
                 return -ENOMEM;
 
-        ret = copy_thread_group_keys(tsk);
-        if (ret < 0) {
-                kmem_cache_free(signal_cachep, sig);
-                return ret;
-        }
-
         atomic_set(&sig->count, 1);
         atomic_set(&sig->live, 1);
         init_waitqueue_head(&sig->wait_chldexit);
@@ -852,7 +846,6 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)
 void __cleanup_signal(struct signal_struct *sig)
 {
         thread_group_cputime_free(sig);
-        exit_thread_group_keys(sig);
         tty_kref_put(sig->tty);
         kmem_cache_free(signal_cachep, sig);
 }