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Wed, 19 Nov 2025 14:26:54 -0800 (PST) From: Askar Safin To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Linus Torvalds , Greg Kroah-Hartman , Christian Brauner , Al Viro , Jan Kara , Christoph Hellwig , Jens Axboe , Andy Shevchenko , Aleksa Sarai , =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= , Julian Stecklina , Gao Xiang , Art Nikpal , Andrew Morton , Alexander Graf , Rob Landley , Lennart Poettering , linux-arch@vger.kernel.org, linux-block@vger.kernel.org, initramfs@vger.kernel.org, linux-api@vger.kernel.org, linux-doc@vger.kernel.org, Michal Simek , Luis Chamberlain , Kees Cook , Thorsten Blum , Heiko Carstens , Arnd Bergmann , Dave Young , Christophe Leroy , Krzysztof Kozlowski , Borislav Petkov , Jessica Clarke , Nicolas Schichan , David Disseldorp , patches@lists.linux.dev Subject: [PATCH v4 3/3] init: remove /proc/sys/kernel/real-root-dev Date: Wed, 19 Nov 2025 22:24:07 +0000 Message-ID: <20251119222407.3333257-4-safinaskar@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20251119222407.3333257-1-safinaskar@gmail.com> References: <20251119222407.3333257-1-safinaskar@gmail.com> Precedence: bulk X-Mailing-List: linux-api@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit It is not used anymore. Signed-off-by: Askar Safin --- Documentation/admin-guide/sysctl/kernel.rst | 6 ------ include/uapi/linux/sysctl.h | 1 - init/do_mounts_initrd.c | 20 -------------------- 3 files changed, 27 deletions(-) diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index f3ee807b5d8b..218265babaf9 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -1215,12 +1215,6 @@ that support this feature. == =========================================================================== -real-root-dev -============= - -See Documentation/admin-guide/initrd.rst. - - reboot-cmd (SPARC only) ======================= diff --git a/include/uapi/linux/sysctl.h b/include/uapi/linux/sysctl.h index 63d1464cb71c..1c7fe0f4dca4 100644 --- a/include/uapi/linux/sysctl.h +++ b/include/uapi/linux/sysctl.h @@ -92,7 +92,6 @@ enum KERN_DOMAINNAME=8, /* string: domainname */ KERN_PANIC=15, /* int: panic timeout */ - KERN_REALROOTDEV=16, /* real root device to mount after initrd */ KERN_SPARC_REBOOT=21, /* reboot command on Sparc */ KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */ diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c index fe335dbc95e0..892e69ab41c4 100644 --- a/init/do_mounts_initrd.c +++ b/init/do_mounts_initrd.c @@ -8,31 +8,11 @@ unsigned long initrd_start, initrd_end; int initrd_below_start_ok; -static unsigned int real_root_dev; /* do_proc_dointvec cannot handle kdev_t */ static int __initdata mount_initrd = 1; phys_addr_t phys_initrd_start __initdata; unsigned long phys_initrd_size __initdata; -#ifdef CONFIG_SYSCTL -static const struct ctl_table kern_do_mounts_initrd_table[] = { - { - .procname = "real-root-dev", - .data = &real_root_dev, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec, - }, -}; - -static __init int kernel_do_mounts_initrd_sysctls_init(void) -{ - register_sysctl_init("kernel", kern_do_mounts_initrd_table); - return 0; -} -late_initcall(kernel_do_mounts_initrd_sysctls_init); -#endif /* CONFIG_SYSCTL */ - static int __init no_initrd(char *str) { pr_warn("noinitrd option is deprecated and will be removed soon\n"); -- 2.47.3