Change find_new_reaper() to use for_each_thread() instead of deprecated while_each_thread(). We do not bother to check "thread != father" in the 1st loop, we can rely on PF_EXITING check.
Note: this means the minor behavioural change: for_each_thread() starts from the group leader. But this should be fine, nobody should make any assumption about do_wait(__WNOTHREAD) when it comes to reparented tasks. And this can avoid the pointless reparenting to a short-living thread While zombie leaders are not that common. Signed-off-by: Oleg Nesterov <[email protected]> --- kernel/exit.c | 8 +++----- 1 files changed, 3 insertions(+), 5 deletions(-) diff --git a/kernel/exit.c b/kernel/exit.c index 9ade2f5..ac7ba9b 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -473,8 +473,7 @@ static struct task_struct *find_new_reaper(struct task_struct *father) struct pid_namespace *pid_ns = task_active_pid_ns(father); struct task_struct *thread; - thread = father; - while_each_thread(father, thread) { + for_each_thread(father, thread) { if (thread->flags & PF_EXITING) continue; if (unlikely(pid_ns->child_reaper == father)) @@ -511,11 +510,10 @@ static struct task_struct *find_new_reaper(struct task_struct *father) break; if (!reaper->signal->is_child_subreaper) continue; - thread = reaper; - do { + for_each_thread(reaper, thread) { if (!(thread->flags & PF_EXITING)) return thread; - } while_each_thread(reaper, thread); + } } } -- 1.5.5.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
