linux-kernel - Re: [PATCH 1/2] VFS: change old_dir and new

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Message-ID: <CAKYAXd_bTyobeFyX7DvGN4vrdCqEDt0V=8vt7PeRfppcVbYP-w@mail.gmail.com>
Date: Fri, 13 Jun 2025 07:52:12 +0900
From: Namjae Jeon <linkinjeon@...nel.org>
To: NeilBrown <neil@...wn.name>
Cc: Alexander Viro <viro@...iv.linux.org.uk>, Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>, 
	David Howells <dhowells@...hat.com>, Tyler Hicks <code@...icks.com>, 
	Chuck Lever <chuck.lever@...cle.com>, Jeff Layton <jlayton@...nel.org>, 
	Miklos Szeredi <miklos@...redi.hu>, Amir Goldstein <amir73il@...il.com>, Kees Cook <kees@...nel.org>, 
	Joel Granados <joel.granados@...nel.org>, Steve French <smfrench@...il.com>, 
	Sergey Senozhatsky <senozhatsky@...omium.org>, netfs@...ts.linux.dev, 
	linux-kernel@...r.kernel.org, ecryptfs@...r.kernel.org, 
	linux-fsdevel@...r.kernel.org, linux-nfs@...r.kernel.org, 
	linux-unionfs@...r.kernel.org, linux-cifs@...r.kernel.org
Subject: Re: [PATCH 1/2] VFS: change old_dir and new_dir in struct renamedata
 to dentrys

On Thu, Jun 12, 2025 at 7:59 AM NeilBrown <neil@...wn.name> wrote:
>
> all users of 'struct renamedata' have the dentry for the old and new
> directories, and often have no use for the inode except to store it in
> the renamedata.
>
> This patch changes struct renamedata to hold the dentry, rather than
> the inode, for the old and new directories, and changes callers to
> match.
>
> This results in the removal of several local variables and several
> dereferences of ->d_inode at the cost of adding ->d_inode dereferences
> to vfs_rename().
>
> Signed-off-by: NeilBrown <neil@...wn.name>
For ksmbd part,
Reviewed-by: Namjae Jeon <linkinjeon@...nel.org>
Thanks!