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Date:   Fri, 15 Oct 2021 06:24:04 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Zqiang <qiang.zhang1211@...il.com>
Cc:     Christoph Hellwig <hch@...radead.org>, willy@...radead.org,
        akpm@...ux-foundation.org, sunhao.th@...il.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fs: inode: use queue_rcu_work() instead of call_rcu()

On Fri, Oct 15, 2021 at 04:28:10PM +0800, Zqiang wrote:
> 
> On 2021/10/15 下午4:04, Christoph Hellwig wrote:
> > NAK.
> > 
> > 1. We need to sort ounderlying issue first as I already said _twice_.
> > 2. this has a major penality on all file systems
> 
> This problem report by sunhao,  the log
> 
> https://drive.google.com/file/d/1M5oyA_IcWSDB2XpnoX8SDmKJA3JhKltz/view?usp=sharing

When I wget that it just returns garbage unfortunately.

> 
> but I can not find useful information, not sure if it is related to the loop device driver.
> are you mean There is a problem about inode lifetime ?

Yes.  This implies that the del_gendisk hasn't been called before the
block device lifetimes hits 0.

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