linux-kernel - Re: [Ocfs2-devel] [PATCH] ocfs2: reflink deadlock when clone file to the same directory simultaneously

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Message-Id: <20221016192902.4d7e70047ca5d04a2f585688@linux-foundation.org>
Date:   Sun, 16 Oct 2022 19:29:02 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Joseph Qi <jiangqi903@...il.com>
Cc:     Gang He <ghe@...e.com>, linux-kernel@...r.kernel.org,
        ocfs2-devel@....oracle.com
Subject: Re: [Ocfs2-devel] [PATCH] ocfs2: reflink deadlock when clone file
 to the same directory simultaneously

On Mon, 17 Oct 2022 09:51:14 +0800 Joseph Qi <jiangqi903@...il.com> wrote:

> Hi Andrew,
> 
> On 10/17/22 7:29 AM, Andrew Morton via Ocfs2-devel wrote:
> > On Thu, 26 Aug 2021 13:56:16 +0800 Gang He <ghe@...e.com> wrote:
> > 
> >> So, I will send a new patch to fix this deadlock problem via dlmglue layer.
> >> For this patch, I want to change the patch comments as a reflink 
> >> improvement patch.
> > 
> > Did this ever happen?  I've been sitting on this patch for ages.
> > 
> Looked back this thread, the root cause of deadlock seems to be the
> asynchronous of fsdlm handling. So this is not a right fix.
> While for the performance improvement, I need some test data as well.

OK, thanks, I dropped the patch.