diff options
| author | Linux Build Service Account <lnxbuild@localhost> | 2018-06-02 01:13:34 -0700 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2018-06-02 01:13:34 -0700 |
| commit | fd95dadf54bf08e910a4cad0bbce8d25e8813429 (patch) | |
| tree | 7824cada0e10c6bb934c59b3b8a3aeb09b1e812f /kernel/signal.c | |
| parent | 33b2567cd52c95ad3b33578aaa200d53aa4d4dbc (diff) | |
| parent | 9848856fe15cdad6b64b5883bb4c30528b358f7d (diff) | |
Merge "Merge android-4.4.133 (3f51ea2) into msm-4.4"
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 4a548c6a4118..7d75bc2d042f 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2495,6 +2495,13 @@ void __set_current_blocked(const sigset_t *newset) { struct task_struct *tsk = current; + /* + * In case the signal mask hasn't changed, there is nothing we need + * to do. The current->blocked shouldn't be modified by other task. + */ + if (sigequalsets(&tsk->blocked, newset)) + return; + spin_lock_irq(&tsk->sighand->siglock); __set_task_blocked(tsk, newset); spin_unlock_irq(&tsk->sighand->siglock); |