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

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Date:	Tue, 27 May 2014 21:15:10 +0200
From:	Christoph Hellwig <hch@....de>
To:	Jens Axboe <axboe@...nel.dk>
Cc:	Christoph Hellwig <hch@....de>, Ming Lei <tom.leiming@...il.com>,
	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 Tue, May 27, 2014 at 12:54:22PM -0600, Jens Axboe wrote:
> Space is plenty big again now... The down side is that the splice trick 
> wont work, but if we have more than a few requests on the requeue list, 
> we're doing it wrong anyway.

I don't see a problem with the splice.  How about this version (untested so
far)?


View attachment "0001-blk-mq-add-helper-to-insert-requests-from-irq-contex.patch" of type "text/x-patch" (4649 bytes)