Received-SPF: pass (google.com: domain of linux-ext4+bounces-393-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99;
Date: Tue, 12 Dec 2023 05:10:42 -0800
From: Christoph Hellwig <hch@infradead.org>
To: John Garry <john.g.garry@oracle.com>
Cc: Ojaswin Mujoo <ojaswin@linux.ibm.com>, linux-ext4@vger.kernel.org,
	Theodore Ts'o <tytso@mit.edu>,
	Ritesh Harjani <ritesh.list@gmail.com>,
	linux-kernel@vger.kernel.org,
	"Darrick J . Wong" <djwong@kernel.org>, linux-block@vger.kernel.org,
	linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	dchinner@redhat.com
Subject: Re: [RFC 0/7] ext4: Allocator changes for atomic write support with
 DIO
Message-ID: <ZXhb0tKFvAge/GWf@infradead.org>
References: <cover.1701339358.git.ojaswin@linux.ibm.com>
 <8c06c139-f994-442b-925e-e177ef2c5adb@oracle.com>
 <ZW3WZ6prrdsPc55Z@li-bb2b2a4c-3307-11b2-a85c-8fa5c3a69313.ibm.com>
 <de90e79b-83f2-428f-bac6-0754708aa4a8@oracle.com>
 <ZXbqVs0TdoDcJ352@li-bb2b2a4c-3307-11b2-a85c-8fa5c3a69313.ibm.com>
 <c4cf3924-f67d-4f04-8460-054dbad70b93@oracle.com>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <c4cf3924-f67d-4f04-8460-054dbad70b93@oracle.com>

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.