Re: [PATCH 5/7] blk-mq: remove REQ_ATOM_COMPLETE usages from blk-mq

[Tejun Heo]

Hello,

On Tue, Jan 09, 2018 at 11:08:04AM +0800, jianchao.wang wrote:
> > But what'd prevent the completion reinitializing the request and then
> > the actual completion path coming in and completing the request again?
>
> blk_mark_rq_complete() will gate and ensure there will be only one 
> __blk_mq_complete_request() to be invoked.

Yeah, but then the complete flag will be cleared once completion is
done and the request is reinitialized.

Thanks.

-- 
tejun