Re: [RFC 0/9] ext4: Add direct-io atomic write support using fsawu

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John Garry <john.g.garry@xxxxxxxxxx> writes:

> On 02/03/2024 07:41, Ritesh Harjani (IBM) wrote:
>
> Hi Ritesh,
>
>> Hello all,
>> 
>> This RFC series adds support for atomic writes to ext4 direct-io using
>> filesystem atomic write unit. It's built on top of John's "block atomic
>> write v5" series which adds RWF_ATOMIC flag interface to pwritev2() and enables
>> atomic write support in underlying device driver and block layer.
>
> I am curious - do you have any plans to progress this work?
>

Yes John. I have resumed my work on the interfaces changes for
direct-io atomic write for ext4 (hence all the queries on the other
email). We do intend to get this going.

Meanwhile Ojaswin has been working on extsize feature for ext4 (similar
to XFS). It uses some of our previous mballoc order-0 allocation work,
to support aligned allocations.
The patch series is almost in it's final stages. He will be soon be
posting an initial RFC design of the same (hopefully by next week).

Thanks again for your help!

-ritesh




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