From 1722c14a2097634a7ba37000c0ec7d9409918b64 Mon Sep 17 00:00:00 2001 From: Christian Brauner Date: Thu, 17 Oct 2019 12:18:31 +0200 Subject: [PATCH] exit: use pid_has_task() in do_wait() Replace hlist_empty() with the new pid_has_task() helper which is more idiomatic, easier to grep for, and unifies how callers perform this check. Signed-off-by: Christian Brauner Reviewed-by: Oleg Nesterov Link: https://lore.kernel.org/r/20191017101832.5985-4-christian.brauner@ubuntu.com --- kernel/exit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/exit.c b/kernel/exit.c index a46a50d67002..f2d20ab74422 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -1457,7 +1457,7 @@ repeat: */ wo->notask_error = -ECHILD; if ((wo->wo_type < PIDTYPE_MAX) && - (!wo->wo_pid || hlist_empty(&wo->wo_pid->tasks[wo->wo_type]))) + (!wo->wo_pid || !pid_has_task(wo->wo_pid, wo->wo_type))) goto notask; set_current_state(TASK_INTERRUPTIBLE);