diff options
| author | Oleg Nesterov <oleg@tv-sign.ru> | 2008-04-30 09:52:49 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-30 17:29:35 +0200 |
| commit | c99fcf28b87d8cab592db7571e3164f5cb54c5b3 (patch) | |
| tree | 356ce5d2b0bfd33794a81bf4cd90abd7859776da /kernel/signal.c | |
| parent | signals: __group_complete_signal: cache the value of p->signal (diff) | |
| download | linux-c99fcf28b87d8cab592db7571e3164f5cb54c5b3.tar.xz linux-c99fcf28b87d8cab592db7571e3164f5cb54c5b3.zip | |
signals: send_group_sigqueue: don't take tasklist_lock
handle_stop_signal() was changed, now send_group_sigqueue() doesn't need
tasklist_lock.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 2a06f2441805..db442c59219e 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -1335,7 +1335,6 @@ send_group_sigqueue(int sig, struct sigqueue *q, struct task_struct *p) BUG_ON(!(q->flags & SIGQUEUE_PREALLOC)); - read_lock(&tasklist_lock); /* Since it_lock is held, p->sighand cannot be NULL. */ spin_lock_irqsave(&p->sighand->siglock, flags); @@ -1344,7 +1343,7 @@ send_group_sigqueue(int sig, struct sigqueue *q, struct task_struct *p) __group_complete_signal(sig, p); spin_unlock_irqrestore(&p->sighand->siglock, flags); - read_unlock(&tasklist_lock); + return ret; } |