linux-kernel - Re: [PATCH v4 10/11] ext4: Atomic writes test for bigalloc using fio crc verifier on multiple files

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Message-ID: <8b39d392-0a10-47fd-ac3c-b73a1e341e86@oracle.com>
Date: Thu, 21 Aug 2025 10:28:56 +0100
From: John Garry <john.g.garry@...cle.com>
To: Ojaswin Mujoo <ojaswin@...ux.ibm.com>
Cc: Zorro Lang <zlang@...hat.com>, fstests@...r.kernel.org,
        Ritesh Harjani <ritesh.list@...il.com>, djwong@...nel.org,
        tytso@....edu, linux-xfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-ext4@...r.kernel.org
Subject: Re: [PATCH v4 10/11] ext4: Atomic writes test for bigalloc using fio
 crc verifier on multiple files

On 21/08/2025 09:28, Ojaswin Mujoo wrote:
> Yes these 2 tests are similar however 061 uses fallocate=native +
> _scratch_mkfs_ext4 to test whether atomic writes on preallocated file
> via multiple threads works correctly.
> 
> The 062 uses fallocate=truncate + _scratch_mkfs_sized 360MB +
> 'multiple jobs each writing to a different file' to ensure we are
> extensively stressing the allocation logic in low space scenarios.

I see, please at least fully document this in the commit messages.

Thanks