sched: Move sched_autogroup_exit() to free_signal_struct()

Per Oleg's suggestion, undo fork failure free/put_signal_struct change,
and move sched_autogroup_exit() to free_signal_struct() instead.

Signed-off-by: Mike Galbraith <efault@gmx.de>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1294222564.8369.6.camel@marge.simson.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 4 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 7d164e25b0f0..dc1a8bbcea7b 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -169,15 +169,14 @@ EXPORT_SYMBOL(free_task);
 static inline void free_signal_struct(struct signal_struct *sig)
 {
         taskstats_tgid_free(sig);
+        sched_autogroup_exit(sig);
         kmem_cache_free(signal_cachep, sig);
 }
 
 static inline void put_signal_struct(struct signal_struct *sig)
 {
-        if (atomic_dec_and_test(&sig->sigcnt)) {
-                sched_autogroup_exit(sig);
+        if (atomic_dec_and_test(&sig->sigcnt))
                 free_signal_struct(sig);
-        }
 }
 
 void __put_task_struct(struct task_struct *tsk)
@@ -1318,7 +1317,7 @@ bad_fork_cleanup_mm:
         }
 bad_fork_cleanup_signal:
         if (!(clone_flags & CLONE_THREAD))
-                put_signal_struct(p->signal);
+                free_signal_struct(p->signal);
 bad_fork_cleanup_sighand:
         __cleanup_sighand(p->sighand);
 bad_fork_cleanup_fs: