linux-kernel - Re: [patch] xen-blkback: sync I/O after backend disconnected

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Message-ID: <20110815144610.GA3707@infradead.org>
Date:	Mon, 15 Aug 2011 10:46:10 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Joe Jin <joe.jin@...cle.com>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Jens Axboe <jaxboe@...ionio.com>,
	Ian Campbell <Ian.Campbell@...citrix.com>,
	Greg Marsden <greg.marsden@...cle.com>,
	Kurt C Hackel <KURT.HACKEL@...cle.com>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [patch] xen-blkback: sync I/O after backend disconnected

On Mon, Aug 15, 2011 at 12:55:02PM +0800, Joe Jin wrote:
> When backend disconnect, sync IO requests to the disk.

Care to explain why?

Also you'll just need a sync_blockdev, fsync_bdev does far to many
things that don't make any sense when you don't have a file system
mounted on a device.

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