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Wed, 22 Oct 2025 01:26:13 -0700 (PDT) From: Askar Safin To: hch@infradead.org Cc: akpm@linux-foundation.org, andy.shevchenko@gmail.com, arnd@arndb.de, axboe@kernel.dk, bp@alien8.de, brauner@kernel.org, christophe.leroy@csgroup.eu, cyphar@cyphar.com, ddiss@suse.de, dyoung@redhat.com, email2tema@gmail.com, graf@amazon.com, gregkh@linuxfoundation.org, hca@linux.ibm.com, hsiangkao@linux.alibaba.com, initramfs@vger.kernel.org, jack@suse.cz, jrtc27@jrtc27.com, julian.stecklina@cyberus-technology.de, kees@kernel.org, krzk@kernel.org, linux-api@vger.kernel.org, linux-arch@vger.kernel.org, linux-block@vger.kernel.org, linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mcgrof@kernel.org, monstr@monstr.eu, mzxreary@0pointer.de, nschichan@freebox.fr, patches@lists.linux.dev, rob@landley.net, safinaskar@gmail.com, thomas.weissschuh@linutronix.de, thorsten.blum@linux.dev, torvalds@linux-foundation.org, viro@zeniv.linux.org.uk Subject: Re: [PATCH v3 0/3] initrd: remove half of classic initrd support Date: Wed, 22 Oct 2025 11:26:04 +0300 Message-ID: <20251022082604.25437-1-safinaskar@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Christoph Hellwig : > On Tue, Oct 21, 2025 at 03:05:35PM +0200, Christian Brauner wrote: > > Without Acks or buy-in from other maintainers this is not a change we > > can just do given that a few people already piped up and expressed > > reservations that this would be doable for them. > > > > @Christoph, you marked this as deprecated years ago. > > What's your take on this? > > I'd love to see it go obviously. But IIRC we had various users show > up, which speaks against removing it. Maybe the first step would be > a separate config option just for block-based initrd? So far in recent months 3 people spoke against initrd removal. All they are in Cc. They are: - Julian Stecklina. He planned to use initrd with erofs, which is currently not supported anyway. Also, he replied to v1: "You have all my support for nuking so much legacy code!" "Acked-by: Julian Stecklina " ( https://lore.kernel.org/lkml/1f9aee6090716db537e9911685904786b030111f.camel@cyberus-technology.de/ ) - Gao Xiang, maintainer of erofs. He also planned to use initrd with erofs, which is currently not supported anyway. Also, he said to me: > Again, I don't have any strong opinion to kill initrd entirely because > I think initdax may be more efficient and I don't have any time to work > on this part -- it's unrelated to my job. ( https://lore.kernel.org/all/79315382-5ba8-42c1-ad03-5cb448b23b72@linux.alibaba.com/ ) - Nicolas Schichan. He has million devices, which use initrd. But they use root=/dev/ram code path, not linuxrc code path, which I'm removing. He explained this here: https://lore.kernel.org/lkml/20250918152830.438554-1-nschichan@freebox.fr/ So, this patchset will not impact these people. So, I think it is okay to remove linuxrc now. We can revert this patchset if needed. -- Askar Safin