Messages in this thread | | | Date | Fri, 4 Dec 2015 16:02:51 +0800 | Subject | Re: [PATCH RFC 1/3] lightnvm: check mm before use | From | Wenwei Tao <> |
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2015-12-02 20:16 GMT+08:00 Matias Bjørling <m@bjorling.me>: > The core can initialize I/Os before a media manager is registered with > the lightnvm subsystem. Make sure that we don't call the media manager > prematurely. > > Signed-off-by: Matias Bjørling <m@bjorling.me> > --- > drivers/nvme/host/lightnvm.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c > index 06c3364..762c9a7 100644 > --- a/drivers/nvme/host/lightnvm.c > +++ b/drivers/nvme/host/lightnvm.c > @@ -455,7 +455,7 @@ static void nvme_nvm_end_io(struct request *rq, int error) > struct nvm_rq *rqd = rq->end_io_data; > struct nvm_dev *dev = rqd->dev; > > - if (dev->mt->end_io(rqd, error)) > + if (dev->mt && dev->mt->end_io(rqd, error))
Is there any chance core can initialize IOs on device without register with a media manger ? In my understanding core cannot create target on device without a media manger, if core doesn't have a target how can core initialize IOs on these devices? If I'm wrong about this, please correct me.
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