ROOT_DEV carries a root device number communicated in an architecture-
specific way. We now pass it to kinit via the real-root-dev sysctl call.
Signed-off-by: H. Peter Anvin <[email protected]>
---
commit 0f5a324d655ad582246b6830843114d09835f593
tree fd3a96a69b6d74ee33dcd54a58b8666c02139a3a
parent f3e41698e540a7d39658d6590fde1379c0f5bab0
author H. Peter Anvin <[email protected]> Thu, 06 Apr 2006 14:07:43 -0700
committer H. Peter Anvin <[email protected]> Sun, 18 Jun 2006 18:46:23 -0700
arch/i386/kernel/setup.c | 1 +
arch/x86_64/kernel/setup.c | 1 +
init/initramfs.c | 4 ----
init/main.c | 12 ++++++++++++
4 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index 16784a6..54c72d9 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -1460,6 +1460,7 @@ #ifdef CONFIG_EFI
efi_enabled = 1;
#endif
+ ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
drive_info = DRIVE_INFO;
screen_info = SCREEN_INFO;
edid_info = EDID_INFO;
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index cadbe33..6d4f025 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -599,6 +599,7 @@ void __init setup_arch(char **cmdline_p)
{
unsigned long kernel_end;
+ ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
screen_info = SCREEN_INFO;
edid_info = EDID_INFO;
saved_video_mode = SAVED_VIDEO_MODE;
diff --git a/init/initramfs.c b/init/initramfs.c
index 0cbd783..7ea4127 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -10,10 +10,6 @@ #include <linux/syscalls.h>
unsigned long __initdata initrd_start, initrd_end;
int __initdata initrd_below_start_ok;
-/* This isn't used by the kernel, but exists as a sysctl node for
- backwards compatibility reasons. */
-unsigned int real_root_dev;
-
static __initdata char *message;
static void __init error(char *x)
{
diff --git a/init/main.c b/init/main.c
index 4b3fd6f..10fb231 100644
--- a/init/main.c
+++ b/init/main.c
@@ -49,6 +49,7 @@ #include <linux/unistd.h>
#include <linux/rmap.h>
#include <linux/mempolicy.h>
#include <linux/key.h>
+#include <linux/root_dev.h>
#include <asm/io.h>
#include <asm/bugs.h>
@@ -126,6 +127,11 @@ static char *ramdisk_execute_command;
/* Setup configured maximum number of CPUs to activate */
static unsigned int max_cpus = NR_CPUS;
+/* ROOT_DEV contains any architecture-specific default root device. */
+/* real_root_dev is used (via sysctl) to communicate ROOT_DEV to kinit. */
+dev_t ROOT_DEV;
+unsigned int real_root_dev;
+
/*
* Setup routine for controlling SMP activation
*
@@ -682,6 +688,12 @@ static int init(void * unused)
do_basic_setup();
/*
+ * If we have a root device set by architecture-specific means,
+ * let kinit know about it.
+ */
+ real_root_dev = new_encode_dev(ROOT_DEV);
+
+ /*
* check if there is an early userspace init. If yes, let it do all
* the work
*/
-
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