The patch titled
signals: collect_signal: simplify the "still_pending" logic
has been added to the -mm tree. Its filename is
signals-collect_signal-simplify-the-still_pending-logic.patch
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------------------------------------------------------
Subject: signals: collect_signal: simplify the "still_pending" logic
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Factor out sigdelset() calls and remove the "still_pending" variable.
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Acked-by: Roland McGrath <roland@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/signal.c | 15 ++++++---------
1 file changed, 6 insertions(+), 9 deletions(-)
diff -puN kernel/signal.c~signals-collect_signal-simplify-the-still_pending-logic kernel/signal.c
--- a/kernel/signal.c~signals-collect_signal-simplify-the-still_pending-logic
+++ a/kernel/signal.c
@@ -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, struc
*/
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;
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
vt-fix-vc_resize-locking.patch
uml-activate_mm-remove-the-dead-pf_borrowed_mm-check.patch
posix-timers-timer_delete-remove-the-bogus-it_process-=-null-check.patch
posix-timers-release_posix_timer-kill-the-bogus-put_task_struct-it_process.patch
signals-collect_signal-remove-the-unneeded-sigismember-check.patch
signals-collect_signal-simplify-the-still_pending-logic.patch
signals-change-collect_signal-to-return-void.patch
distinct-tgid-tid-i-o-statistics.patch
--
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