From: Christoph Hellwig <hch@lst.de>
To: Junichi Nomura <j-nomura@ce.jp.nec.com>
Cc: Jens Axboe <axboe@kernel.dk>,
device-mapper development <dm-devel@redhat.com>,
Christoph Hellwig <hch@lst.de>, Mike Snitzer <snitzer@redhat.com>
Subject: Re: [PATCH for-4.2 2/3] block, dm: don't copy bios for request clones
Date: Wed, 27 May 2015 10:21:57 +0200 [thread overview]
Message-ID: <20150527082157.GA25993@lst.de> (raw)
In-Reply-To: <556410BB.3000103@ce.jp.nec.com>
On Tue, May 26, 2015 at 06:20:43AM +0000, Junichi Nomura wrote:
> Not completing bios is not sufficient.
> If you advance the bi_iter to the end, you need to somehow rewind it
> or the re-submission will be incomplete, that would end up as a data
> corruption...
Can you explain which particular case you're worried about?
next prev parent reply other threads:[~2015-05-27 8:21 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-22 13:14 [PATCH for-4.2 1/3] block: remove management of bi_remaining when restoring original bi_end_io Mike Snitzer
2015-05-22 13:14 ` [PATCH for-4.2 2/3] block, dm: don't copy bios for request clones Mike Snitzer
2015-05-26 6:20 ` Junichi Nomura
2015-05-27 8:21 ` Christoph Hellwig [this message]
2015-05-27 9:50 ` Junichi Nomura
2015-05-28 6:38 ` Junichi Nomura
2015-05-29 16:54 ` Christoph Hellwig
2015-06-01 1:14 ` Junichi Nomura
2015-06-03 7:37 ` Christoph Hellwig
2015-06-03 23:13 ` Junichi Nomura
2015-05-29 16:55 ` Christoph Hellwig
2015-06-01 1:19 ` Junichi Nomura
2015-06-03 7:39 ` Christoph Hellwig
2015-05-22 13:14 ` [PATCH for-4.2 3/3] block: remove export for blk_queue_bio Mike Snitzer
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