new helper: restore_saved_sigmask()

first fruits of ..._restore_sigmask() helpers: now we can take
boilerplate "signal didn't have a handler, clear RESTORE_SIGMASK
and restore the blocked mask from ->saved_mask" into a common
helper.  Open-coded instances switched...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 660c8ae93471..f1b46b88f6f5 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2207,6 +2207,12 @@ extern int send_sigqueue(struct sigqueue *,  struct task_struct *, int group);
 extern int do_sigaction(int, struct k_sigaction *, struct k_sigaction *);
 extern int do_sigaltstack(const stack_t __user *, stack_t __user *, unsigned long);
 
+static inline void restore_saved_sigmask(void)
+{
+        if (test_and_clear_restore_sigmask())
+                set_current_blocked(&current->saved_sigmask);
+}
+
 static inline int kill_cad_pid(int sig, int priv)
 {
         return kill_pid(cad_pid, sig, priv);