linux-ext4 - Re: [PATCH AUTOSEL 6.1 08/14] ext4: enable dioread

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Date: Wed, 24 Jan 2024 11:26:14 +0530
From: Ojaswin Mujoo <ojaswin@...ux.ibm.com>
To: Pavel Machek <pavel@...x.de>
Cc: Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org, Ritesh Harjani <ritesh.list@...il.com>,
        "Theodore Ts'o" <tytso@....edu>, adilger.kernel@...ger.ca,
        linux-ext4@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 6.1 08/14] ext4: enable dioread_nolock as default
 for bs < ps case

On Tue, Jan 16, 2024 at 09:47:44PM +0100, Pavel Machek wrote:
> Hi!
> > 
> > [ Upstream commit e89fdcc425b6feea4dfb33877e9256757905d763 ]
> > 
> > dioread_nolock was originally disabled as a default option for bs < ps
> > scenarios due to a data corruption issue. Since then, we've had some
> > fixes in this area which address such issues. Enable dioread_nolock by
> > default and remove the experimental warning message for bs < ps path.
> > 
> > dioread for bs < ps has been tested on a 64k pagesize machine using:
> > 
> > kvm-xfstest -C 3 -g auto
> > 
> > with the following configs:
> > 
> > 64k adv bigalloc_4k bigalloc_64k data_journal encrypt
> > dioread_nolock dioread_nolock_4k ext3 ext3conv nojournal
> > 
> > And no new regressions were seen compared to baseline kernel.
> 
> But no fixes, either, so not suitable for stable.
> 
> BR,
> 								Pavel

Hi Pavel, Sasha,

I agree, this can be dropped from stable since it is not a bug fix.

- ojaswin
> 
> -- 
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