Stefan Berger 3b8d7a1b85 rootfs: Fix support for rootfstype= when root= is given ... commit 21528c69a0 upstream. Documentation/filesystems/ramfs-rootfs-initramfs.rst states: If CONFIG_TMPFS is enabled, rootfs will use tmpfs instead of ramfs by default. To force ramfs, add "rootfstype=ramfs" to the kernel command line. This currently does not work when root= is provided since then saved_root_name contains a string and rootfstype= is ignored. Therefore, ramfs is currently always chosen when root= is provided. The current behavior for rootfs's filesystem is: root= | rootfstype= | chosen rootfs filesystem ------------+-------------+-------------------------- unspecified | unspecified | tmpfs unspecified | tmpfs | tmpfs unspecified | ramfs | ramfs provided | ignored | ramfs rootfstype= should be respected regardless whether root= is given, as shown below: root= | rootfstype= | chosen rootfs filesystem ------------+-------------+-------------------------- unspecified | unspecified | tmpfs (as before) unspecified | tmpfs | tmpfs (as before) unspecified | ramfs | ramfs (as before) provided | unspecified | ramfs (compatibility with before) provided | tmpfs | tmpfs (new) provided | ramfs | ramfs (new) This table represents the new behavior. Fixes: 6e19eded36 ("initmpfs: use initramfs if rootfstype= or root= specified") Cc: <stable@vger.kernel.org> Signed-off-by: Rob Landley <rob@landley.net> Link: https://lore.kernel.org/lkml/8244c75f-445e-b15b-9dbf-266e7ca666e2@landley.net/ Reviewed-and-Tested-by: Mimi Zohar <zohar@linux.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> Link: https://lore.kernel.org/r/20231120011248.396012-1-stefanb@linux.ibm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-01-25 14:37:52 -08:00
..
Kconfig	kbuild: check the minimum assembler version in Kconfig	2023-04-20 12:10:28 +02:00
Makefile	md: move the early init autodetect code to drivers/md/	2020-07-16 15:34:47 +02:00
calibrate.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
do_mounts.c	rootfs: Fix support for rootfstype= when root= is given	2024-01-25 14:37:52 -08:00
do_mounts.h	init: add an init_mknod helper	2020-07-31 08:17:54 +02:00
do_mounts_initrd.c	Merge branch 'hch.init_path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-08-07 09:40:34 -07:00
do_mounts_rd.c	init: add an init_unlink helper	2020-07-31 08:17:52 +02:00
init_task.c	seccomp: Fix CONFIG tests for Seccomp_filters	2021-05-14 09:50:24 +02:00
initramfs.c	initramfs: fix clang build failure	2020-12-11 14:02:14 -08:00
main.c	x86/mm: Initialize text poking earlier	2023-08-08 19:57:39 +02:00
noinitramfs.c	init: add an init_mknod helper	2020-07-31 08:17:54 +02:00
version.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00