linux-kernel - Re: [PATCH] block: add a bi

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Message-ID: <20150724104946.GA25145@lst.de>
Date:	Fri, 24 Jul 2015 12:49:46 +0200
From:	Christoph Hellwig <hch@....de>
To:	Jens Axboe <axboe@...nel.dk>
Cc:	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Neil Brown <neilb@...e.de>, Liu Bo <bo.li.liu@...cle.com>,
	linux-raid@...r.kernel.org, dm-devel@...hat.com,
	linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] block: add a bi_error field to struct bio

On Wed, Jul 22, 2015 at 03:59:46PM -0600, Jens Axboe wrote:
> One possible solution would be to shrink bi_flags to an unsigned int, no 
> problems fitting that in. Then we could stuff bi_error in that (new) hole, 
> and we would end up having the same size again.

As long as we use set/test/clear_bt on bi_flags that won't work unfortunately.
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