linux-ext4 - Re: [RFC 0/7] ext4: Allocator changes for atomic write support with DIO

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Date: Tue, 12 Dec 2023 05:10:42 -0800
From: Christoph Hellwig <hch@...radead.org>
To: John Garry <john.g.garry@...cle.com>
Cc: Ojaswin Mujoo <ojaswin@...ux.ibm.com>, linux-ext4@...r.kernel.org,
	Theodore Ts'o <tytso@....edu>,
	Ritesh Harjani <ritesh.list@...il.com>,
	linux-kernel@...r.kernel.org,
	"Darrick J . Wong" <djwong@...nel.org>, linux-block@...r.kernel.org,
	linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	dchinner@...hat.com
Subject: Re: [RFC 0/7] ext4: Allocator changes for atomic write support with
 DIO

On Tue, Dec 12, 2023 at 07:46:51AM +0000, John Garry wrote:
> It is assumed that the user will fallocate/dd the complete file before
> issuing atomic writes, and we will have extent alignment and length as
> required.

I don't think that's a long time maintainable usage model.