diff options
| author | Oleg Nesterov <oleg@tv-sign.ru> | 2007-10-17 08:26:58 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-17 17:42:51 +0200 |
| commit | 3ae4cbadf4bf97ee137b921a1b928d2a5dcd26ca (patch) | |
| tree | 1d8bea4faeae056da20b2401645900daa3c86c55 /kernel/exit.c | |
| parent | wait_task_zombie: fix 2/3 races vs forget_original_parent() (diff) | |
| download | linux-3ae4cbadf4bf97ee137b921a1b928d2a5dcd26ca.tar.xz linux-3ae4cbadf4bf97ee137b921a1b928d2a5dcd26ca.zip | |
exit_notify: don't take tasklist for TIF_SIGPENDING re-targeting
->siglock provides enough protection to iterate over the thread group.
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>
Diffstat (limited to 'kernel/exit.c')
| -rw-r--r-- | kernel/exit.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index b4d569675d4b..28144b94e55c 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -747,13 +747,11 @@ static void exit_notify(struct task_struct *tsk) * Now we'll wake all the threads in the group just to make * sure someone gets all the pending signals. */ - read_lock(&tasklist_lock); spin_lock_irq(&tsk->sighand->siglock); for (t = next_thread(tsk); t != tsk; t = next_thread(t)) if (!signal_pending(t) && !(t->flags & PF_EXITING)) recalc_sigpending_and_wake(t); spin_unlock_irq(&tsk->sighand->siglock); - read_unlock(&tasklist_lock); } write_lock_irq(&tasklist_lock); @@ -781,9 +779,8 @@ static void exit_notify(struct task_struct *tsk) * and we were the only connection outside, so our pgrp * is about to become orphaned. */ - t = tsk->real_parent; - + pgrp = task_pgrp(tsk); if ((task_pgrp(t) != pgrp) && (task_session(t) == task_session(tsk)) && |