Messages in this thread | | | Date | Thu, 14 Mar 2013 15:43:07 +0100 | From | Oleg Nesterov <> | Subject | Re: [PATCH 2/2] task_work: check callback if it's NULL |
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On 03/14, liguang wrote: > > Signed-off-by: liguang <lig.fnst@cn.fujitsu.com> > --- > kernel/task_work.c | 3 ++- > 1 files changed, 2 insertions(+), 1 deletions(-) > > diff --git a/kernel/task_work.c b/kernel/task_work.c > index 0bf4258..f458b08 100644 > --- a/kernel/task_work.c > +++ b/kernel/task_work.c > @@ -75,7 +75,8 @@ void task_work_run(void) > > do { > next = work->next; > - work->func(work); > + if (unlikely(work->func)) > + work->func(work);
Why?
Oleg.
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