exec: simplify ->sighand switching

[firefly-linux-kernel-4.4.55.git] / fs / exec.c

diff --git a/fs/exec.c b/fs/exec.c
index 59c0038baa4f2ed428149202ab410940b5927fd2..7f325df5e0140a05444e74114aec91325ee12355 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -916,12 +916,7 @@ no_thread_group:
 
                write_lock_irq(&tasklist_lock);
                spin_lock(&oldsighand->siglock);
-               spin_lock_nested(&newsighand->siglock, SINGLE_DEPTH_NESTING);
-
                rcu_assign_pointer(tsk->sighand, newsighand);
-               recalc_sigpending();
-
-               spin_unlock(&newsighand->siglock);
                spin_unlock(&oldsighand->siglock);
                write_unlock_irq(&tasklist_lock);
 
@@ -931,12 +926,11 @@ no_thread_group:
        BUG_ON(!thread_group_leader(tsk));
        return 0;
 }
-       
+
 /*
  * These functions flushes out all traces of the currently running executable
  * so that a new one can be started
  */
-
 static void flush_old_files(struct files_struct * files)
 {
        long j = -1;