linux-kernel - Re: [PATCH] xfs: Remove i_rwsem lock in buffered read

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Message-ID: <58d1f280-e0ac-49c7-8f42-df22fd5c5d9f@oracle.com>
Date: Thu, 9 Jan 2025 12:25:36 +0000
From: John Garry <john.g.garry@...cle.com>
To: Chi Zhiling <chizhiling@....com>, Amir Goldstein <amir73il@...il.com>
Cc: Dave Chinner <david@...morbit.com>, djwong@...nel.org, cem@...nel.org,
        linux-xfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chi Zhiling <chizhiling@...inos.cn>
Subject: Re: [PATCH] xfs: Remove i_rwsem lock in buffered read

On 09/01/2025 12:10, Chi Zhiling wrote:
> On 2025/1/9 18:25, Amir Goldstein wrote:
>>>> One more thing I should mention.
>>>> You do not need to wait for atomic large writes patches to land.
>>>> There is nothing stopping you from implementing the suggested
>>>> solution based on the xfs code already in master (v6.13-rc1),
>>>> which has support for the RWF_ATOMIC flag for writes.
>>
>> Only I missed the fact that there is not yet a plan to support
>> atomic buffered writes :-/
> 
> I think it's necessary to support atomic buffered writes.

Please check this thread then:
https://lore.kernel.org/linux-fsdevel/20240228061257.GA106651@mit.edu/