Re: [PATCH v4 0/4] fat: add support for the renameat2 RENAME_EXCHANGE flag

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On 6/8/22 11:42, OGAWA Hirofumi wrote:
> Javier Martinez Canillas <javierm@xxxxxxxxxx> writes:
> 
>> Hello OGAWA,
>>
>> On 6/1/22 19:32, Javier Martinez Canillas wrote:
>>> Hello,
>>>
>>> The series adds support for the renameat2 system call RENAME_EXCHANGE flag
>>> (which allows to atomically replace two paths) to the vfat filesystem code.
>>>
>>> There are many use cases for this, but we are particularly interested in
>>> making possible for vfat filesystems to be part of OSTree [0] deployments.
>>>
>>> Currently OSTree relies on symbolic links to make the deployment updates
>>> an atomic transactional operation. But RENAME_EXCHANGE could be used [1]
>>> to achieve a similar level of robustness when using a vfat filesystem.
>>>
>>> Patch #1 is just a preparatory patch to introduce the RENAME_EXCHANGE
>>> support, patch #2 moves some code blocks in vfat_rename() to a set of
>>> helper functions, that can be reused by tvfat_rename_exchange() that's
>>> added by patch #3 and finally patch #4 adds some kselftests to test it.
>>>
>>
>> I think that addressed all the issues you pointed out in v3, please let me
>> know if there's anything else that is needed for this patch series.
>>
>> Would these be merged by you or should I ping someone else? I'm not
>> that familiar with how filesystem patches make into the mainline tree.
> 
> Sorry, it is just the my issue. I was traveling latest week, so is not
> reviewing yet. I'll do soon.
> 

Sure, there's no rush. I just wanted to confirm that. Thanks a lot!

-- 
Best regards,

Javier Martinez Canillas
Linux Engineering
Red Hat




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