linux-kernel - Re: [PATCH 1/1] f2fs: fix to check space of current segment journal

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Message-ID: <20220914080839.GA19067@172.21.0.10>
Date:   Wed, 14 Sep 2022 10:08:39 +0200
From:   Philippe De Muyter <phdm@...q.eu>
To:     Wu Bo <bo.wu@...o.com>
Cc:     jaegeuk@...nel.org, chao@...nel.org,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] f2fs: fix to check space of current segment journal

Hello Wu Bo,

On Wed, Sep 14, 2022 at 12:04:23PM +0800, Wu Bo wrote:
> As Philippe De Muyter reported:
> https://lore.kernel.org/linux-f2fs-devel/20220913224908.GA25100@172.21.0.10/T/#u
> 
> The warning log showed that when finding a new space for nat the journal
> space turned out to be full. This because the journal_rwsem is not
> locked before the journal space checking. The journal space may become
> full just after we check it.
> 
> Reported-by: Philippe De Muyter <phdm@...q.eu>
> Signed-off-by: Wu Bo <bo.wu@...o.com>
> ---
>  fs/f2fs/node.c    |  6 +++---
>  fs/f2fs/segment.c | 10 +++++-----
>  2 files changed, 8 insertions(+), 8 deletions(-)
> 

Thank you for your patch.

Unfortunately it does not apply to my 4.1.15 or newer 4.1.y sources,
and I do not have the knowledge of f2fs internals to modify your
patch myself.  E.g. 4.1.y lacks the '.journal' field in the
'struct curseg_info'.

Could you make a version suitable for 4.1.y ?

Best regards

Philippe