[PATCH RESEND 16/62] brd: remove "ramdisk_size" command line parameter

Askar Safin
2025-09-13T00:57:31Z

It was used mostly for initrd. It could be used only if
brd is built-in. Use "brd.rd_size" instead

Signed-off-by: Askar Safin <safinaskar@gmail.com>
---
.../admin-guide/kernel-parameters.txt | 3 ---
Documentation/arch/m68k/kernel-options.rst | 20 ++-----------------
arch/arm/configs/s3c6400_defconfig | 2 +-
drivers/block/brd.c | 10 ----------
4 files changed, 3 insertions(+), 32 deletions(-)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index ad52e3d26014..e862a7b1d2ec 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5279,9 +5279,6 @@
raid= [HW,RAID]
See Documentation/admin-guide/md.rst.

- ramdisk_size= [RAM] Sizes of RAM disks in kilobytes
- See Documentation/admin-guide/blockdev/ramdisk.rst.
-
random.trust_cpu=off
[KNL,EARLY] Disable trusting the use of the CPU's
random number generator (if available) to
diff --git a/Documentation/arch/m68k/kernel-options.rst b/Documentation/arch/m68k/kernel-options.rst
index 2008a20b4329..f6469ebeb2c7 100644
--- a/Documentation/arch/m68k/kernel-options.rst
+++ b/Documentation/arch/m68k/kernel-options.rst
@@ -215,27 +215,11 @@ Devices possible for Atari:
seconds.

-2.6) ramdisk_size=
-------------------
-
-:Syntax: ramdisk_size=<size>
-
-This option instructs the kernel to set up a ramdisk of the given
-size in KBytes. Do not use this option if the ramdisk contents are
-passed by bootstrap! In this case, the size is selected automatically
-and should not be overwritten.
-
-The only application is for root filesystems on floppy disks, that
-should be loaded into memory. To do that, select the corresponding
-size of the disk as ramdisk size, and set the root device to the disk
-drive (with "root=").
-
-
-2.7) swap=
+2.5) swap=

I can't find any sign of this option in 2.2.6.

-2.8) buff=
+2.6) buff=
-----------

I can't find any sign of this option in 2.2.6.
diff --git a/arch/arm/configs/s3c6400_defconfig b/arch/arm/configs/s3c6400_defconfig
index a37e6ac40825..23635d5b9322 100644
--- a/arch/arm/configs/s3c6400_defconfig
+++ b/arch/arm/configs/s3c6400_defconfig
@@ -4,7 +4,7 @@ CONFIG_ARCH_MULTI_V6=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_ARCH_S3C64XX=y
CONFIG_MACH_WLF_CRAGG_6410=y
-CONFIG_CMDLINE="console=ttySAC0,115200 root=/dev/ram init=/linuxrc initrd=0x51000000,6M ramdisk_size=6144"
+CONFIG_CMDLINE="console=ttySAC0,115200 root=/dev/ram init=/linuxrc initrd=0x51000000,6M"
CONFIG_VFP=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index 72f02d2b8a99..05c4325904d2 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -222,16 +222,6 @@ MODULE_LICENSE("GPL");
MODULE_ALIAS_BLOCKDEV_MAJOR(RAMDISK_MAJOR);
MODULE_ALIAS("rd");

-#ifndef MODULE
-/* Legacy boot options - nonmodular */
-static int __init ramdisk_size(char *str)
-{
- rd_size = simple_strtol(str, NULL, 0);
- return 1;
-}
-__setup("ramdisk_size=", ramdisk_size);
-#endif
-
/*
* The device scheme is derived from loop.c. Keep them in synch where possible
* (should share code eventually).
--
2.47.2