From: Christoph Hellwig <hch@lst.de>
To: Christian Brauner <brauner@kernel.org>
Cc: "Amir Goldstein" <amir73il@gmail.com>,
"Christoph Hellwig" <hch@lst.de>,
"Miklos Szeredi" <mszeredi@redhat.com>,
"Al Viro" <viro@zeniv.linux.org.uk>,
linux-fsdevel@vger.kernel.org, linux-unionfs@vger.kernel.org,
"Aleksa Sarai" <cyphar@cyphar.com>,
"Giuseppe Scrivano" <gscrivan@redhat.com>,
"Rodrigo Campos Catelin" <rodrigo@sdfg.com.ar>,
"Seth Forshee" <sforshee@digitalocean.com>,
"Luca Bocassi" <luca.boccassi@microsoft.com>,
"Lennart Poettering" <mzxreary@0pointer.de>,
"Stéphane Graber" <stgraber@ubuntu.com>,
stable@vger.kernel.org
Subject: Re: [PATCH v2 02/19] exportfs: support idmapped mounts
Date: Wed, 30 Mar 2022 17:26:35 +0200 [thread overview]
Message-ID: <20220330152635.GB4835@lst.de> (raw)
In-Reply-To: <20220330102409.1290850-3-brauner@kernel.org>
On Wed, Mar 30, 2022 at 12:23:50PM +0200, Christian Brauner wrote:
> Make the two locations where exportfs helpers check permission to lookup
> a given inode idmapped mount aware by switching it to the lookup_one()
> helper. This is a bugfix for the open_by_handle_at() system call which
> doesn't take idmapped mounts into account currently. It's not tied to a
> specific commit so we'll just Cc stable.
>
> In addition this is required to support idmapped base layers in overlay.
> The overlay filesystem uses exportfs to encode and decode file handles
> for its index=on mount option and when nfs_export=on.
This probably wants a Fixes tag, as without it NFS exporting idmapped
file will give slightly unexpected results.
Otherwise looks fine:
Reviewed-by: Christoph Hellwig <hch@lst.de>
next prev parent reply other threads:[~2022-03-30 15:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20220330102409.1290850-1-brauner@kernel.org>
2022-03-30 10:23 ` [PATCH v2 02/19] exportfs: support idmapped mounts Christian Brauner
2022-03-30 15:26 ` Christoph Hellwig [this message]
2022-03-30 16:04 ` Christian Brauner
2022-03-30 16:08 ` Christoph Hellwig
2022-03-30 16:11 ` Christian Brauner
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