linux-kernel - Re: [PATCH AUTOSEL 5.10 9/9] ext4: enable the lazy init thread when remounting read/write

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Message-ID: <ZIy60MUrKxit2tNq@duo.ucw.cz>
Date:   Fri, 16 Jun 2023 21:41:04 +0200
From:   Pavel Machek <pavel@...x.de>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Theodore Ts'o <tytso@....edu>, adilger.kernel@...ger.ca,
        linux-ext4@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.10 9/9] ext4: enable the lazy init thread when
 remounting read/write

Hi!

> [ Upstream commit eb1f822c76beeaa76ab8b6737ab9dc9f9798408c ]
> 
> In commit a44be64bbecb ("ext4: don't clear SB_RDONLY when remounting
> r/w until quota is re-enabled") we defer clearing tyhe SB_RDONLY flag
> in struct super.  However, we didn't defer when we checked sb_rdonly()
> to determine the lazy itable init thread should be enabled, with the
> next result that the lazy inode table initialization would not be
> properly started.  This can cause generic/231 to fail in ext4's
> nojournal mode.
> 
> Fix this by moving when we decide to start or stop the lazy itable
> init thread to after we clear the SB_RDONLY flag when we are
> remounting the file system read/write.
> 
> Fixes a44be64bbecb ("ext4: don't clear SB_RDONLY when remounting r/w until...")
> 
> Signed-off-by: Theodore Ts'o <tytso@....edu>
> Link: https://lore.kernel.org/r/20230527035729.1001605-1-tytso@mit.edu
> Signed-off-by: Theodore Ts'o <tytso@....edu>
> Signed-off-by: Sasha Levin <sashal@...nel.org>

Normally "Fixes" would be "Fixes:" and in the signed-off block. Plus,
two consecutive sign-offs from tytso are probably wrong, too.

Best regards,
								Pavel
								
-- 
DENX Software Engineering GmbH,        Managing Director: Erika Unter
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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