kernel/linux.git/init/do_mounts_rd.c, branch v7.0-rc7

initrd: remove deprecated code path (linuxrc)

2026-01-12T16:22:22+00:00

Remove linuxrc initrd code path, which was deprecated in 2020. Initramfs and (non-initial) RAM disks (i. e. brd) still work. Both built-in and bootloader-supplied initramfs still work. Non-linuxrc initrd code path (i. e. using /dev/ram as final root filesystem) still works, but I put deprecation message into it. Also I deprecate command line parameters "noinitrd" and "ramdisk_start=". Signed-off-by: Askar Safin Link: https://patch.msgid.link/20251119222407.3333257-3-safinaskar@gmail.com Reviewed-by: Christoph Hellwig Signed-off-by: Christian Brauner

init: remove deprecated "load_ramdisk" and "prompt_ramdisk" command line parameters

2025-12-15T13:32:54+00:00

...which do nothing. They were deprecated (in documentation) in 6b99e6e6aa62 ("Documentation/admin-guide: blockdev/ramdisk: remove use of "rdev"") in 2020 and in kernel messages in c8376994c86c ("initrd: remove support for multiple floppies") in 2020. Signed-off-by: Askar Safin Link: https://patch.msgid.link/20251119222407.3333257-2-safinaskar@gmail.com Acked-by: Arnd Bergmann Reviewed-by: Christoph Hellwig Reviewed-by: Randy Dunlap Signed-off-by: Christian Brauner

initrd: Replace simple_strtol with kstrtoint to improve ramdisk_start_setup

2025-10-31T09:12:32+00:00

Replace simple_strtol() with the recommended kstrtoint() for parsing the 'ramdisk_start=' boot parameter. Unlike simple_strtol(), which returns a a long, kstrtoint() converts the string directly to an integer and avoids implicit casting. Check the return value of kstrtoint() and reject invalid values. This adds error handling while preserving existing behavior for valid values, and removes use of the deprecated simple_strtol() helper. Signed-off-by: Thorsten Blum Reviewed-by: Jan Kara Signed-off-by: Christian Brauner

initrd: Use str_plural() in rd_load_image()

2025-09-15T12:47:14+00:00

Add the local variable 'nr_disks' and replace the manual ternary "s" pluralization with the standardized str_plural() helper function. Use pr_notice() instead of printk(KERN_NOTICE) to silence a checkpatch warning. No functional changes intended. Signed-off-by: Thorsten Blum Reviewed-by: Jan Kara Signed-off-by: Christian Brauner

initrd: Fix unused variable warning in rd_load_image() on s390

2025-09-15T12:28:37+00:00

The local variables 'rotator' and 'rotate' (used for the progress indicator) aren't used on s390. Building the kernel with W=1 generates the following warning: init/do_mounts_rd.c:192:17: warning: variable 'rotate' set but not used [-Wunused-but-set-variable] 192 | unsigned short rotate = 0; | ^ 1 warning generated. Remove the preprocessor directives and use the IS_ENABLED(CONFIG_S390) macro instead, allowing the compiler to optimize away unused variables and avoid the warning on s390. Signed-off-by: Thorsten Blum Signed-off-by: Christian Brauner

init: add an init_unlink helper

2020-07-31T06:17:52+00:00

Add a simple helper to unlink with a kernel space file name and switch the early init code over to it. Remove the now unused ksys_unlink. Signed-off-by: Christoph Hellwig

initrd: switch initrd loading to struct file based APIs

2020-07-30T06:22:47+00:00

There is no good reason to mess with file descriptors from in-kernel code, switch the initrd loading to struct file based read and writes instead. Also Pass an explicit offset instead of ->f_pos, and to make that easier, use file scope file structs and offsets everywhere except for identify_ramdisk_image instead of the current strange mix. Signed-off-by: Christoph Hellwig Acked-by: Linus Torvalds

initrd: remove support for multiple floppies

2020-07-30T06:22:33+00:00

Remove the special handling for multiple floppies in the initrd code. No one should be using floppies for booting these days. (famous last words..) Includes a spelling fix from Colin Ian King . Signed-off-by: Christoph Hellwig Acked-by: Linus Torvalds

init/: remove ineffective sparse disabling

2018-08-22T17:52:49+00:00

Sparse checking used to be disabled on init/do_mounts.c and a few related files because "Many of the syscalls used in this file expect some of the arguments to be __user pointers not __kernel pointers". However since 28128c61e ("kconfig.h: Include compiler types to avoid missed struct attributes") the checks are, in fact, not disabled anymore because of the more early include of "linux/compiler_types.h" So remove the now ineffective #undefery that was done to disable these warnings, as well as the associated comment. Link: http://lkml.kernel.org/r/20180617115355.53799-1-luc.vanoostenryck@gmail.com Signed-off-by: Luc Van Oostenryck Cc: Dominik Brodowski Cc: Al Viro Cc: Kees Cook Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

init/ramdisk: use pr_cont() at the end of ramdisk loading

2018-04-11T17:28:36+00:00

Use pr_cont() at the end of ramdisk loading. This will avoid the rotator and an extra newline appearing in the dmesg. Before: RAMDISK: Loading 2436KiB [1 disk] into ram disk... | done. After: RAMDISK: Loading 2436KiB [1 disk] into ram disk... done. Link: http://lkml.kernel.org/r/20180302205552.16031-1-aaro.koskinen@iki.fi Signed-off-by: Aaro Koskinen Reviewed-by: Andrew Morton Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds