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	Mon, 07 Oct 2024 14:43:38 +0000
Date: Mon, 7 Oct 2024 15:43:38 +0100
From: Al Viro <viro@zeniv.linux.org.uk>
To: Amir Goldstein <amir73il@gmail.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>,
	Christian Brauner <brauner@kernel.org>,
	linux-fsdevel@vger.kernel.org, linux-unionfs@vger.kernel.org
Subject: Re: [PATCH v3 2/5] ovl: allocate a container struct ovl_file for ovl
 private context
Message-ID: <20241007144338.GL4017910@ZenIV>
References: <20241007141925.327055-1-amir73il@gmail.com>
 <20241007141925.327055-3-amir73il@gmail.com>
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Sender: Al Viro <viro@ftp.linux.org.uk>

On Mon, Oct 07, 2024 at 04:19:22PM +0200, Amir Goldstein wrote:
> Instead of using ->private_data to point at realfile directly, so
> that we can add more context per ovl open file.

Hmm...  That'll cost you an extra deref to get to underlying file.
Cache footprint might get unpleasant...