signal: make wants_signal() return bool

wants_signal() already behaves like a boolean function.  Let's actually
declare it as such too.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Christian Brauner <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Eric W. Biederman <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: James Morris <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephen Smalley <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/kernel/signal.c b/kernel/signal.c
index fe0e9e82ce448764fafc6fb7d6adc283cedfd01d..0e48dbc6649e122a0a13baab4fefbdec49ea4c22 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -879,16 +879,20 @@ static bool prepare_signal(int sig, struct task_struct *p, bool force)
  * as soon as they're available, so putting the signal on the shared queue
  * will be equivalent to sending it to one such thread.
  */
-static inline int wants_signal(int sig, struct task_struct *p)
+static inline bool wants_signal(int sig, struct task_struct *p)
 {
        if (sigismember(&p->blocked, sig))
-               return 0;
+               return false;
+
        if (p->flags & PF_EXITING)
-               return 0;
+               return false;
+
        if (sig == SIGKILL)
-               return 1;
+               return true;
+
        if (task_is_stopped_or_traced(p))
-               return 0;
+               return false;
+
        return task_curr(p) || !signal_pending(p);
 }