new helper: sigsuspend()

guts of saved_sigmask-based sigsuspend/rt_sigsuspend.  Takes
kernel sigset_t *.

Open-coded instances replaced with calling it.

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

1 files changed, 1 insertions, 11 deletions

diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index 115eac431483..b68ccadd2ff4 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -478,18 +478,8 @@ asmlinkage int
 sys_sigsuspend(int history0, int history1, old_sigset_t mask)
 {
         sigset_t blocked;
-
-        current->saved_sigmask = current->blocked;
-
-        mask &= _BLOCKABLE;
         siginitset(&blocked, mask);
-        set_current_blocked(&blocked);
-
-        current->state = TASK_INTERRUPTIBLE;
-        schedule();
-
-        set_restore_sigmask();
-        return -ERESTARTNOHAND;
+        return sigsuspend(&blocked);
 }
 
 asmlinkage int