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Tue, 24 Feb 2026 18:47:05 -0800 (PST) From: Askar Safin To: ignat@cloudflare.com Cc: kernel-team@cloudflare.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] mnt: add support for non-rootfs initramfs Date: Wed, 25 Feb 2026 05:47:01 +0300 Message-ID: <20260225024701.3098089-1-safinaskar@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20200305193511.28621-1-ignat@cloudflare.com> References: <20200305193511.28621-1-ignat@cloudflare.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Ignat Korchagin : > With this change we can ask the kernel (by specifying nonroot_initramfs kernel > cmdline option) to create a "leaf" tmpfs mount for us and switch root to it > before the initramfs handling code, so initramfs gets unpacked directly into > the "leaf" tmpfs with rootfs being empty and no need to clean up anything. This problem is solved by nullfs patches: https://lore.kernel.org/all/20260112-work-immutable-rootfs-v2-0-88dd1c34a204@kernel.org/ They are already in mainline. -- Askar Safin