linux-kernel - Re: [PATCH V3 04/12] kernfs: don't set dentry->d

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Message-ID: <20170619190000.GI12062@htj.duckdns.org>
Date:   Mon, 19 Jun 2017 15:00:00 -0400
From:   Tejun Heo <tj@...nel.org>
To:     Shaohua Li <shli@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        gregkh@...uxfoundation.org, hch@....de, axboe@...com,
        rostedt@...dmis.org, lizefan@...wei.com, Kernel-team@...com,
        Shaohua Li <shli@...com>
Subject: Re: [PATCH V3 04/12] kernfs: don't set dentry->d_fsdata

On Thu, Jun 15, 2017 at 11:17:12AM -0700, Shaohua Li wrote:
> From: Shaohua Li <shli@...com>
> 
> When working on adding exportfs operations in kernfs, I found it's hard
> to initialize dentry->d_fsdata in the exportfs operations. Looks there
> is no way to do it without race condition. Look at the kernfs code
> closely, there is no point to set dentry->d_fsdata. inode->i_private
> already points to kernfs_node, and we can get inode from a dentry. So
> this patch just delete the d_fsdata usage.
> 
> Signed-off-by: Shaohua Li <shli@...com>

Acked-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun