ARM: mvebu: Add support for the network controller in Armada 375 SoC

[deliverable/linux.git] / kernel / exit.c

diff --git a/kernel/exit.c b/kernel/exit.c
index 5ac3c19c245c855cb195c20843c76bdef4e74014..e5c4668f1799d15ce1d527b1e357d795f3d748ea 100644 (file)
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -313,45 +313,6 @@ kill_orphaned_pgrp(struct task_struct *tsk, struct task_struct *parent)
        }
 }
 
-/*
- * Let kernel threads use this to say that they allow a certain signal.
- * Must not be used if kthread was cloned with CLONE_SIGHAND.
- */
-int allow_signal(int sig)
-{
-       if (!valid_signal(sig) || sig < 1)
-               return -EINVAL;
-
-       spin_lock_irq(&current->sighand->siglock);
-       /* This is only needed for daemonize()'ed kthreads */
-       sigdelset(&current->blocked, sig);
-       /*
-        * Kernel threads handle their own signals. Let the signal code
-        * know it'll be handled, so that they don't get converted to
-        * SIGKILL or just silently dropped.
-        */
-       current->sighand->action[(sig)-1].sa.sa_handler = (void __user *)2;
-       recalc_sigpending();
-       spin_unlock_irq(&current->sighand->siglock);
-       return 0;
-}
-
-EXPORT_SYMBOL(allow_signal);
-
-int disallow_signal(int sig)
-{
-       if (!valid_signal(sig) || sig < 1)
-               return -EINVAL;
-
-       spin_lock_irq(&current->sighand->siglock);
-       current->sighand->action[(sig)-1].sa.sa_handler = SIG_IGN;
-       recalc_sigpending();
-       spin_unlock_irq(&current->sighand->siglock);
-       return 0;
-}
-
-EXPORT_SYMBOL(disallow_signal);
-
 #ifdef CONFIG_MEMCG
 /*
  * A task is exiting.   If it owned this mm, find a new owner for the mm.
@@ -397,9 +358,15 @@ retry:
        /*
         * Search through everything else, we should not get here often.
         */
-       for_each_process_thread(g, c) {
-               if (!(c->flags & PF_KTHREAD) && c->mm == mm)
-                       goto assign_new_owner;
+       for_each_process(g) {
+               if (g->flags & PF_KTHREAD)
+                       continue;
+               for_each_thread(g, c) {
+                       if (c->mm == mm)
+                               goto assign_new_owner;
+                       if (c->mm)
+                               break;
+               }
        }
        read_unlock(&tasklist_lock);
        /*