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

[Joe Jin]

On 08/15/11 22:46, Christoph Hellwig wrote:
> 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?

When backend disconnect, I think we'd better flush all dirty data 
to the disk ASAP.

> 
> 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.
> 

xen-blkback support physical device and loopback file, so I think
here should be fsync_bdev()? 

Thanks,
Joe
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/