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[PATCH] __dequeue_signal() cleanup

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This tightens up __dequeue_signal a little.  It also avoids doing
recalc_sigpending twice in a row, instead doing it once in dequeue_signal.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Roland McGrath 2006-09-29 02:00:31 -07:00 committed by Linus Torvalds
parent b9ecb2bd5d
commit 27d91e07f9
1 changed files with 2 additions and 4 deletions
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6
kernel/signal.c
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@ -417,9 +417,8 @@ static int collect_signal(int sig, struct sigpending *list, siginfo_t *info)
static int __dequeue_signal(struct sigpending *pending, sigset_t *mask,
siginfo_t *info)
{
int sig = 0;
int sig = next_signal(pending, mask);
sig = next_signal(pending, mask);
if (sig) {
if (current->notifier) {
if (sigismember(current->notifier_mask, sig)) {
@ -432,9 +431,7 @@ static int __dequeue_signal(struct sigpending *pending, sigset_t *mask,
if (!collect_signal(sig, pending, info))
sig = 0;
}
recalc_sigpending();
return sig;
}
@ -451,6 +448,7 @@ int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info)
if (!signr)
signr = __dequeue_signal(&tsk->signal->shared_pending,
mask, info);
recalc_sigpending_tsk(tsk);
if (signr && unlikely(sig_kernel_stop(signr))) {
/*
* Set a marker that we have dequeued a stop signal. Our