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Message-ID: <5385494E.1070803@kernel.dk> Date: Tue, 27 May 2014 20:26:22 -0600 From: Jens Axboe <axboe@...nel.dk> To: Ming Lei <tom.leiming@...il.com> CC: Christoph Hellwig <hch@....de>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, stable <stable@...r.kernel.org> Subject: Re: [PATCH] block: mq flush: fix race between IPI handler and mq flush worker On 2014-05-27 19:34, Ming Lei wrote: > On Wed, May 28, 2014 at 3:35 AM, Jens Axboe <axboe@...nel.dk> 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@...il.com> Great! I'll queue it up here too, then. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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