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authorOleg Nesterov <oleg@tv-sign.ru>2008-04-30 09:52:49 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-30 17:29:35 +0200
commitc99fcf28b87d8cab592db7571e3164f5cb54c5b3 (patch)
tree356ce5d2b0bfd33794a81bf4cd90abd7859776da /kernel
parentsignals: __group_complete_signal: cache the value of p->signal (diff)
downloadlinux-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')
-rw-r--r--kernel/signal.c3
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;
}