exec: consolidate 2 fast-paths

Now that we don't pre-allocate the new ->sighand, we can kill the first fast
path, it doesn't make sense any longer. At best, it can save one "list_empty()"
check but leads to the code duplication.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 9 deletions

diff --git a/fs/exec.c b/fs/exec.c
index c6e91c3dc2a1..ab5a4a3ece46 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -752,15 +752,6 @@ static int de_thread(struct task_struct *tsk)
         struct task_struct *leader = NULL;
         int count;
 
-        /*
-         * If we don't share sighandlers, then we aren't sharing anything
-         * and we can just re-use it all.
-         */
-        if (atomic_read(&oldsighand->count) <= 1) {
-                exit_itimers(sig);
-                return 0;
-        }
-
         if (thread_group_empty(tsk))
                 goto no_thread_group;