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From: Askar Safin <safinaskar@gmail.com>
To: brauner@kernel.org
Cc: amir73il@gmail.com, jack@suse.cz, jlayton@kernel.org,
	josef@toxicpanda.com, lennart@poettering.net,
	linux-fsdevel@vger.kernel.org, stable@vger.kernel.org,
	viro@zeniv.linux.org.uk, zbyszek@in.waw.pl,
	Menglong Dong <dong.menglong@zte.com.cn>,
	Zhang Yunkai <zhang.yunkai@zte.com.cn>,
	cgel.zte@gmail.com, Menglong Dong <menglong8.dong@gmail.com>
Subject: Re: [PATCH v2 0/4] fs: add immutable rootfs
Date: Mon,  2 Feb 2026 17:27:32 +0300	[thread overview]
Message-ID: <20260202142732.2207674-1-safinaskar@gmail.com> (raw)
In-Reply-To: <20260112-work-immutable-rootfs-v2-0-88dd1c34a204@kernel.org>

Christian Brauner <brauner@kernel.org>:
> Currently pivot_root() doesn't work on the real rootfs because it
> cannot be unmounted. Userspace has to do a recursive removal of the
> initramfs contents manually before continuing the boot.

I want to point out at yet another benefit of this nullfs patchset:
it prevents data loss on external devices.

Here is why:
https://lore.kernel.org/all/20210522113155.244796-3-dong.menglong@zte.com.cn/
(search for phrase "data lose arise").

-- 
Askar Safin

  parent reply	other threads:[~2026-02-02 14:27 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-12 15:47 [PATCH v2 0/4] fs: add immutable rootfs Christian Brauner
2026-01-12 15:47 ` [PATCH v2 1/4] fs: ensure that internal tmpfs mount gets mount id zero Christian Brauner
2026-01-12 19:37   ` Jeff Layton
2026-01-12 15:47 ` [PATCH v2 2/4] fs: add init_pivot_root() Christian Brauner
2026-01-12 15:47 ` [PATCH v2 3/4] fs: add immutable rootfs Christian Brauner
2026-01-12 15:47 ` [PATCH v2 4/4] docs: mention nullfs Christian Brauner
2026-01-13 14:17 ` [PATCH v2 0/4] fs: add immutable rootfs Jeff Layton
2026-01-14  8:58   ` Christian Brauner
2026-01-14 10:32     ` [RFC PATCH 5/4] fs: use nullfs unconditionally as the real rootfs Christian Brauner
2026-01-14 12:05       ` Jeff Layton
2026-01-14 11:58 ` [PATCH v2 0/4] fs: add immutable rootfs Jeff Layton
2026-01-25 19:18 ` Askar Safin
2026-02-01 19:55 ` Askar Safin
2026-02-04 13:00   ` Christian Brauner
2026-02-04 14:48     ` Askar Safin
2026-02-02 14:27 ` Askar Safin [this message]
2026-02-02 16:22 ` Askar Safin

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