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signals: collect_signal: simplify the "still_pending" logic

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Factor out sigdelset() calls and remove the "still_pending" variable.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleg Nesterov 2008-07-25 01:47:28 -07:00 • committed by Linus Torvalds
parent 6715ca451c
commit d443420761
1 changed files with 6 additions and 9 deletions
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15
kernel/signal.c
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@ -341,7 +341,6 @@ unblock_all_signals(void)
static int collect_signal(int sig, struct sigpending *list, siginfo_t *info)
{
struct sigqueue *q, *first = NULL;
int still_pending = 0;
/*
* Collect the siginfo appropriate to this signal. Check if
@ -349,26 +348,24 @@ static int collect_signal(int sig, struct sigpending *list, siginfo_t *info)
*/
list_for_each_entry(q, &list->list, list) {
if (q->info.si_signo == sig) {
if (first) {
still_pending = 1;
break;
}
if (first)
goto still_pending;
first = q;
}
}
sigdelset(&list->signal, sig);
if (first) {
still_pending:
list_del_init(&first->list);
copy_siginfo(info, &first->info);
__sigqueue_free(first);
if (!still_pending)
sigdelset(&list->signal, sig);
} else {
/* Ok, it wasn't in the queue. This must be
a fast-pathed signal or we must have been
out of queue space. So zero out the info.
*/
sigdelset(&list->signal, sig);
info->si_signo = sig;
info->si_errno = 0;
info->si_code = 0;