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Mon, 15 Sep 2025 18:48:50 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGi0qyrJSXhatUAjAN5GaSbgChEfkulnz/zBRoEI09ayrVbCpTRhDlFRFU2ScIQdlOHU/dANXpgiKsiuT/Fm5k= X-Received: by 2002:a05:6512:3f21:b0:563:d896:2d14 with SMTP id 2adb3069b0e04-5704f7a3535mr4252904e87.36.1757987329545; Mon, 15 Sep 2025 18:48:49 -0700 (PDT) MIME-Version: 1.0 References: <20250912223937.3735076-1-safinaskar@zohomail.com> In-Reply-To: <20250912223937.3735076-1-safinaskar@zohomail.com> From: Dave Young Date: Tue, 16 Sep 2025 09:48:40 +0800 X-Gm-Features: AS18NWBkCHbtMZDfiuZiXnfW8KzozFHrUJlGejiASEzNumvZVB8NmHoE7UrrQwg Message-ID: Subject: Re: [PATCH 00/62] initrd: remove classic initrd support To: Askar Safin Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Linus Torvalds , Greg Kroah-Hartman , Christian Brauner , Al Viro , Jan Kara , Christoph Hellwig , Jens Axboe , Andy Shevchenko , Aleksa Sarai , =?UTF-8?Q?Thomas_Wei=C3=9Fschuh?= , Julian Stecklina , Gao Xiang , Art Nikpal , Andrew Morton , Eric Curtin , Alexander Graf , Rob Landley , Lennart Poettering , linux-arch@vger.kernel.org, linux-alpha@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, x86@kernel.org, Ingo Molnar , linux-block@vger.kernel.org, initramfs@vger.kernel.org, linux-api@vger.kernel.org, linux-doc@vger.kernel.org, linux-efi@vger.kernel.org, linux-ext4@vger.kernel.org, "Theodore Y . Ts'o" , linux-acpi@vger.kernel.org, Michal Simek , devicetree@vger.kernel.org, Luis Chamberlain , Kees Cook , Thorsten Blum , Heiko Carstens , patches@lists.linux.dev X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: RS3Lf2iFhHW0_s8JuUnsSZyEMHVg4XGDgyUJ1R_91q0_1757987330 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250915_184855_572952_C1BE5EE6 X-CRM114-Status: UNSURE ( 9.38 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+linux-um=archiver.kernel.org@lists.infradead.org Hi, On Sat, 13 Sept 2025 at 06:42, Askar Safin wrote: > > Intro > ==== > This patchset removes classic initrd (initial RAM disk) support, > which was deprecated in 2020. > Initramfs still stays, and RAM disk itself (brd) still stays, too. There is one initrd use case in my mind, it can be extended to co-work with overlayfs as a kernel built-in solution for initrd(compressed fs image)+overlayfs. Currently we can use compressed fs images (squashfs or erofs) within initramfs, and kernel loop mount together with overlayfs, this works fine but extra pre-mount phase is needed. Thanks Dave