Merge branch 'task_killable' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc

* 'task_killable' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc: (22 commits)
  Remove commented-out code copied from NFS
  NFS: Switch from intr mount option to TASK_KILLABLE
  Add wait_for_completion_killable
  Add wait_event_killable
  Add schedule_timeout_killable
  Use mutex_lock_killable in vfs_readdir
  Add mutex_lock_killable
  Use lock_page_killable
  Add lock_page_killable
  Add fatal_signal_pending
  Add TASK_WAKEKILL
  exit: Use task_is_*
  signal: Use task_is_*
  sched: Use task_contributes_to_load, TASK_ALL and TASK_NORMAL
  ptrace: Use task_is_*
  power: Use task_is_*
  wait: Use TASK_NORMAL
  proc/base.c: Use task_is_*
  proc/array.c: Use TASK_REPORT
  perfmon: Use task_is_*
  ...

Fixed up conflicts in NFS/sunrpc manually..

1 files changed, 12 insertions, 7 deletions

diff --git a/kernel/signal.c b/kernel/signal.c
index bf49ce6f016b..8054dd4e2d76 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -456,15 +456,15 @@ void signal_wake_up(struct task_struct *t, int resume)
         set_tsk_thread_flag(t, TIF_SIGPENDING);
 
         /*
-         * For SIGKILL, we want to wake it up in the stopped/traced case.
-         * We don't check t->state here because there is a race with it
+         * For SIGKILL, we want to wake it up in the stopped/traced/killable
+         * case. We don't check t->state here because there is a race with it
          * executing another processor and just now entering stopped state.
          * By using wake_up_state, we ensure the process will wake up and
          * handle its death signal.
          */
         mask = TASK_INTERRUPTIBLE;
         if (resume)
-                mask |= TASK_STOPPED | TASK_TRACED;
+                mask |= TASK_WAKEKILL;
         if (!wake_up_state(t, mask))
                 kick_process(t);
 }
@@ -620,7 +620,7 @@ static void handle_stop_signal(int sig, struct task_struct *p)
                          * Wake up the stopped thread _after_ setting
                          * TIF_SIGPENDING
                          */
-                        state = TASK_STOPPED;
+                        state = __TASK_STOPPED;
                         if (sig_user_defined(t, SIGCONT) && !sigismember(&t->blocked, SIGCONT)) {
                                 set_tsk_thread_flag(t, TIF_SIGPENDING);
                                 state |= TASK_INTERRUPTIBLE;
@@ -838,7 +838,7 @@ static inline int wants_signal(int sig, struct task_struct *p)
                 return 0;
         if (sig == SIGKILL)
                 return 1;
-        if (p->state & (TASK_STOPPED | TASK_TRACED))
+        if (task_is_stopped_or_traced(p))
                 return 0;
         return task_curr(p) || !signal_pending(p);
 }
@@ -994,6 +994,11 @@ void zap_other_threads(struct task_struct *p)
         }
 }
 
+int fastcall __fatal_signal_pending(struct task_struct *tsk)
+{
+        return sigismember(&tsk->pending.signal, SIGKILL);
+}
+
 /*
  * Must be called under rcu_read_lock() or with tasklist_lock read-held.
  */
@@ -1441,7 +1446,7 @@ void do_notify_parent(struct task_struct *tsk, int sig)
         BUG_ON(sig == -1);
 
         /* do_notify_parent_cldstop should have been called instead.  */
-        BUG_ON(tsk->state & (TASK_STOPPED|TASK_TRACED));
+        BUG_ON(task_is_stopped_or_traced(tsk));
 
         BUG_ON(!tsk->ptrace &&
                (tsk->group_leader != tsk || !thread_group_empty(tsk)));
@@ -1729,7 +1734,7 @@ static int do_signal_stop(int signr)
                          * so this check has no races.
                          */
                         if (!t->exit_state &&
-                            !(t->state & (TASK_STOPPED|TASK_TRACED))) {
+                            !task_is_stopped_or_traced(t)) {
                                 stop_count++;
                                 signal_wake_up(t, 0);
                         }