Re: [PATCH v2 2/4] ext4: Check for atomic writes support in write iter

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To: "Ritesh Harjani (IBM)" <ritesh.list@xxxxxxxxx>, linux-ext4@xxxxxxxxxxxxxxx
Subject: Re: [PATCH v2 2/4] ext4: Check for atomic writes support in write iter
From: John Garry <john.g.garry@xxxxxxxxxx>
Date: Tue, 29 Oct 2024 08:55:42 +0000
Cc: "Theodore Ts'o" <tytso@xxxxxxx>, Jan Kara <jack@xxxxxxx>, "Darrick J . Wong" <djwong@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Ojaswin Mujoo <ojaswin@xxxxxxxxxxxxx>, Dave Chinner <david@xxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-xfs@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx
In-reply-to: <78ce051e4a7e9a453a46720da76771c21691b162.1729944406.git.ritesh.list@gmail.com>
Organization: Oracle Corporation
References: <cover.1729944406.git.ritesh.list@gmail.com> <78ce051e4a7e9a453a46720da76771c21691b162.1729944406.git.ritesh.list@gmail.com>
User-agent: Mozilla Thunderbird

On 27/10/2024 18:17, Ritesh Harjani (IBM) wrote:

Let's validate the given constraints for atomic write request.
Otherwise it will fail with -EINVAL. Currently atomic write is only
supported on DIO, so for buffered-io it will return -EOPNOTSUPP.

Signed-off-by: Ritesh Harjani (IBM)<ritesh.list@xxxxxxxxx>


Reviewed-by: John Garry <john.g.garry@xxxxxxxxxx>

References:
- [PATCH v2 0/4] ext4: Add atomic writes support for DIO
  - From: Ritesh Harjani (IBM)
- [PATCH v2 2/4] ext4: Check for atomic writes support in write iter
  - From: Ritesh Harjani (IBM)

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