linux-kernel - Re: [PATCH] ramfs: skip mknod if inode already exists.【请注意，邮件由batv+ae8989e1668f84a74d37+6506+infradead.org+hch@...per.srs.infradead.org代发】

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Message-ID: <8735tigref.wl-chenli@uniontech.com>
Date:   Wed, 16 Jun 2021 16:11:52 +0800
From:   Chen Li <chenli@...ontech.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Christian Brauner <christian.brauner@...ntu.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] ramfs: skip mknod if inode already exists.【请注意，邮件由batv+ae8989e1668f84a74d37+6506+infradead.org+hch@...per.srs.infradead.org代发】

On Wed, 16 Jun 2021 13:10:25 +0800,
Christoph Hellwig wrote:
> 
> On Wed, Jun 16, 2021 at 10:53:12AM +0800, Chen Li wrote:
> > 
> > It's possible we try to mknod a dentry, which have
> > already bound to an inode, just skip it.
> 
> How do you think this could happen?
> 
> 

Sorry, that's my bad. I noticed unionfs used to do this check in 9c5b4452998c6e670cfde0928b277e9c50d9a676, but not sure is it a must.