Re: [PATCH v2 10/11] iomap: Add support for zone append writes

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On 25/03/2020 10:48, hch@xxxxxxxxxxxxx wrote:
> On Wed, Mar 25, 2020 at 09:45:39AM +0000, Johannes Thumshirn wrote:
>>
>> Can you please elaborate on that? Why doesn't this hold true for a
>> normal file system? If we split the DIO write into multiple BIOs with
>> zone-append, there is nothing which guarantees the order of the written
>> data (at least as far as I can see).
> 
> Of course nothing gurantees the order.  But the whole point is that the
> order does not matter.
> 

Ok now I'm totally lost. The order of data inside an extent does matter, 
otherwise we have data corruption.




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