linux-kernel - [PATCH RESEND 05/62] init: remove "ramdisk_start" command line parameter, which controls starting block number of initrd

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Message-ID: <20250913003842.41944-6-safinaskar@gmail.com>
Date: Sat, 13 Sep 2025 00:37:44 +0000
From: Askar Safin <safinaskar@...il.com>
To: linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
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Subject: [PATCH RESEND 05/62] init: remove "ramdisk_start" command line parameter, which controls starting block number of initrd

This is preparation for initrd removal

Signed-off-by: Askar Safin <safinaskar@...il.com>
---
 Documentation/admin-guide/blockdev/ramdisk.rst  | 3 +--
 Documentation/admin-guide/kernel-parameters.txt | 2 --
 init/do_mounts_rd.c                             | 7 -------
 3 files changed, 1 insertion(+), 11 deletions(-)

diff --git a/Documentation/admin-guide/blockdev/ramdisk.rst b/Documentation/admin-guide/blockdev/ramdisk.rst
index 9ce6101e8dd9..e57c61108dbc 100644
--- a/Documentation/admin-guide/blockdev/ramdisk.rst
+++ b/Documentation/admin-guide/blockdev/ramdisk.rst
@@ -74,12 +74,11 @@ arch/x86/boot/Makefile.
 
 Some of the kernel command line boot options that may apply here are::
 
-  ramdisk_start=N
   ramdisk_size=M
 
 If you make a boot disk that has LILO, then for the above, you would use::
 
-	append = "ramdisk_start=N ramdisk_size=M"
+	append = "ramdisk_size=M"
 
 4) An Example of Creating a Compressed RAM Disk
 -----------------------------------------------
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index f940c1184912..07e8878f1e13 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5285,8 +5285,6 @@
 	ramdisk_size=	[RAM] Sizes of RAM disks in kilobytes
 			See Documentation/admin-guide/blockdev/ramdisk.rst.
 
-	ramdisk_start=	[RAM] RAM disk image start address
-
 	random.trust_cpu=off
 			[KNL,EARLY] Disable trusting the use of the CPU's
 			random number generator (if available) to
diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c
index 8e0a774a9c6f..864fa88d9f89 100644
--- a/init/do_mounts_rd.c
+++ b/init/do_mounts_rd.c
@@ -17,13 +17,6 @@
 static struct file *in_file, *out_file;
 static loff_t in_pos, out_pos;
 
-static int __init ramdisk_start_setup(char *str)
-{
-	/* will be removed in next commit */
-	return 1;
-}
-__setup("ramdisk_start=", ramdisk_start_setup);
-
 static int __init crd_load(decompress_fn deco);
 
 /*
-- 
2.47.2