From: Kirill Korotaev <dev@sw.ru>

This patch fixes recalc_sigpending() to work correctly with tasks which are
being freezed.

The problem is that freeze_processes() sets PF_FREEZE and TIF_SIGPENDING
flags on tasks, but recalc_sigpending() called from e.g. 
sys_rt_sigtimedwait or any other kernel place will clear TIF_SIGPENDING due
to no pending signals queued and the tasks won't be freezed until it
recieves a real signal or freezed_processes() fail due to timeout.

Signed-Off-By: Kirill Korotaev <dev@sw.ru>
Signed-Off-By: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 kernel/signal.c |    1 +
 1 files changed, 1 insertion(+)

diff -puN kernel/signal.c~software-suspend-and-recalc-sigpending-bug-fix kernel/signal.c
--- 25/kernel/signal.c~software-suspend-and-recalc-sigpending-bug-fix	2005-05-11 18:32:00.000000000 -0700
+++ 25-akpm/kernel/signal.c	2005-05-11 18:32:37.000000000 -0700
@@ -213,6 +213,7 @@ static inline int has_pending_signals(si
 fastcall void recalc_sigpending_tsk(struct task_struct *t)
 {
 	if (t->signal->group_stop_count > 0 ||
+	    (t->flags & PF_FREEZE) ||
 	    PENDING(&t->pending, &t->blocked) ||
 	    PENDING(&t->signal->shared_pending, &t->blocked))
 		set_tsk_thread_flag(t, TIF_SIGPENDING);
_