signal: Factor force_sig_info_to_task out of force_sig_info

All callers of force_sig_info pass info.si_signo in for the signal
by definition as well as in practice.

Further all callers of force_sig_info except force_sig_fault_to_task
pass current as the target task to force_sig_info.

Factor out a static force_sig_info_to_task that
force_sig_fault_to_task can call.

This prepares the way for force_sig_info to have it's task and signal
parameters removed.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

diff --git a/kernel/signal.c b/kernel/signal.c
index d5f9ed5da9c55de25ec079aa283a5db577955939..0984158cd41a6e99f4a4ed63d403346da96913ee 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1294,12 +1294,13 @@ int do_send_sig_info(int sig, struct kernel_siginfo *info, struct task_struct *p
  * We don't want to have recursive SIGSEGV's etc, for example,
  * that is why we also clear SIGNAL_UNKILLABLE.
  */
-int
-force_sig_info(int sig, struct kernel_siginfo *info, struct task_struct *t)
+static int
+force_sig_info_to_task(struct kernel_siginfo *info, struct task_struct *t)
 {
        unsigned long int flags;
        int ret, blocked, ignored;
        struct k_sigaction *action;
+       int sig = info->si_signo;
 
        spin_lock_irqsave(&t->sighand->siglock, flags);
        action = &t->sighand->action[sig-1];
@@ -1324,6 +1325,11 @@ force_sig_info(int sig, struct kernel_siginfo *info, struct task_struct *t)
        return ret;
 }
 
+int force_sig_info(int sig, struct kernel_siginfo *info, struct task_struct *t)
+{
+       return force_sig_info_to_task(info, t);
+}
+
 /*
  * Nuke all other threads in the group.
  */
@@ -1656,7 +1662,7 @@ int force_sig_fault_to_task(int sig, int code, void __user *addr
        info.si_flags = flags;
        info.si_isr = isr;
 #endif
-       return force_sig_info(info.si_signo, &info, t);
+       return force_sig_info_to_task(&info, t);
 }
 
 int force_sig_fault(int sig, int code, void __user *addr