linux-kernel - [PATCH RESEND 06/62] arm: init: remove special logic for setting brd.rd

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Message-ID: <20250913003842.41944-7-safinaskar@gmail.com>
Date: Sat, 13 Sep 2025 00:37:45 +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 06/62] arm: init: remove special logic for setting brd.rd_size

There is no any reason for having special mechanism
for setting ramdisk size.

Also this allows us to change rd_size variable to static

Signed-off-by: Askar Safin <safinaskar@...il.com>
---
 arch/arm/kernel/atags_parse.c | 12 ------------
 drivers/block/brd.c           |  8 ++++----
 include/linux/initrd.h        |  3 ---
 3 files changed, 4 insertions(+), 19 deletions(-)

diff --git a/arch/arm/kernel/atags_parse.c b/arch/arm/kernel/atags_parse.c
index a3f0a4f84e04..615d9e83c9b5 100644
--- a/arch/arm/kernel/atags_parse.c
+++ b/arch/arm/kernel/atags_parse.c
@@ -87,18 +87,6 @@ static int __init parse_tag_videotext(const struct tag *tag)
 __tagtable(ATAG_VIDEOTEXT, parse_tag_videotext);
 #endif
 
-#ifdef CONFIG_BLK_DEV_RAM
-static int __init parse_tag_ramdisk(const struct tag *tag)
-{
-	if (tag->u.ramdisk.size)
-		rd_size = tag->u.ramdisk.size;
-
-	return 0;
-}
-
-__tagtable(ATAG_RAMDISK, parse_tag_ramdisk);
-#endif
-
 static int __init parse_tag_serialnr(const struct tag *tag)
 {
 	system_serial_low = tag->u.serialnr.low;
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index 0c2eabe14af3..72f02d2b8a99 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -27,6 +27,10 @@
 
 #include <linux/uaccess.h>
 
+static unsigned long rd_size = CONFIG_BLK_DEV_RAM_SIZE;
+module_param(rd_size, ulong, 0444);
+MODULE_PARM_DESC(rd_size, "Size of each RAM disk in kbytes.");
+
 /*
  * Each block ramdisk device has a xarray brd_pages of pages that stores
  * the pages containing the block device's contents.
@@ -209,10 +213,6 @@ static int rd_nr = CONFIG_BLK_DEV_RAM_COUNT;
 module_param(rd_nr, int, 0444);
 MODULE_PARM_DESC(rd_nr, "Maximum number of brd devices");
 
-unsigned long rd_size = CONFIG_BLK_DEV_RAM_SIZE;
-module_param(rd_size, ulong, 0444);
-MODULE_PARM_DESC(rd_size, "Size of each RAM disk in kbytes.");
-
 static int max_part = 1;
 module_param(max_part, int, 0444);
 MODULE_PARM_DESC(max_part, "Num Minors to reserve between devices");
diff --git a/include/linux/initrd.h b/include/linux/initrd.h
index 6320a9cb6686..b42235c21444 100644
--- a/include/linux/initrd.h
+++ b/include/linux/initrd.h
@@ -5,9 +5,6 @@
 
 #define INITRD_MINOR 250 /* shouldn't collide with /dev/ram* too soon ... */
 
-/* size of a single RAM disk */
-extern unsigned long rd_size;
-
 /* 1 if it is not an error if initrd_start < memory_start */
 extern int initrd_below_start_ok;
 
-- 
2.47.2