From 618b01eb426dd2d73a4b5e5ebc6379e4eee3b123 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 12 Mar 2013 11:30:04 -0700 Subject: [PATCH] workqueue: make it clear that WQ_DRAINING is an internal flag We're gonna add another internal WQ flag. Let's make the distinction clear. Prefix WQ_DRAINING with __ and move it to bit 16. Signed-off-by: Tejun Heo Reviewed-by: Lai Jiangshan --- include/linux/workqueue.h | 2 +- kernel/workqueue.c | 8 ++++---- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index e152394fa7eb..1751ec4c47c9 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -294,7 +294,7 @@ enum { WQ_HIGHPRI = 1 << 4, /* high priority */ WQ_CPU_INTENSIVE = 1 << 5, /* cpu instensive workqueue */ - WQ_DRAINING = 1 << 6, /* internal: workqueue is draining */ + __WQ_DRAINING = 1 << 16, /* internal: workqueue is draining */ WQ_MAX_ACTIVE = 512, /* I like 512, better ideas? */ WQ_MAX_UNBOUND_PER_CPU = 4, /* 4 * #cpus for unbound wq */ diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 2a67fbbd192c..590f4d048ec7 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -1225,7 +1225,7 @@ static void __queue_work(int cpu, struct workqueue_struct *wq, debug_work_activate(work); /* if dying, only works from the same workqueue are allowed */ - if (unlikely(wq->flags & WQ_DRAINING) && + if (unlikely(wq->flags & __WQ_DRAINING) && WARN_ON_ONCE(!is_chained_work(wq))) return; retry: @@ -2763,11 +2763,11 @@ void drain_workqueue(struct workqueue_struct *wq) /* * __queue_work() needs to test whether there are drainers, is much * hotter than drain_workqueue() and already looks at @wq->flags. - * Use WQ_DRAINING so that queue doesn't have to check nr_drainers. + * Use __WQ_DRAINING so that queue doesn't have to check nr_drainers. */ spin_lock_irq(&workqueue_lock); if (!wq->nr_drainers++) - wq->flags |= WQ_DRAINING; + wq->flags |= __WQ_DRAINING; spin_unlock_irq(&workqueue_lock); reflush: flush_workqueue(wq); @@ -2795,7 +2795,7 @@ reflush: spin_lock(&workqueue_lock); if (!--wq->nr_drainers) - wq->flags &= ~WQ_DRAINING; + wq->flags &= ~__WQ_DRAINING; spin_unlock(&workqueue_lock); local_irq_enable();