Re: [PATCH] block: mq flush: fix race between IPI handler and mq flush worker

[Jens Axboe]

On 2014-05-27 19:34, Ming Lei wrote:
> On Wed, May 28, 2014 at 3:35 AM, Jens Axboe <axboe@xxxxxxxxx> wrote:
> > On 05/27/2014 01:21 PM, Christoph Hellwig wrote:
> > > On Tue, May 27, 2014 at 01:17:40PM -0600, Jens Axboe wrote:
> > > > But I think you sent the old one again, not the new variant :-)
> > >
> > > Oh well, next try:
> >
> > This looks good to me. Was trying to think of ways to reduce that to one
> > list iteration, but I think it's cleaner to just retain the two separate
> > ones.
> >
> > Reusing REQ_SOFTBARRIER is fine as well, not used in blk-mq otherwise.
> >
> > Let me know when you have runtime verified it.
>
> Looks writing over ext4(especially sync writing) can survive
> with Christoph's patch now, thanks Christoph.
>
> Reported-and-tested-by: Ming Lei <tom.leiming@xxxxxxxxx>

Great! I'll queue it up here too, then.

--
Jens Axboe

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