Fix up some mixing of ramdisk/initrd. They have nothing in common,

but the build was confused by the fact that they did share some files.

Move INITRD code from do_mounts_rd.c to new file do_mounts_initrd.c.

3 files changed, 116 insertions, 109 deletions

diff --git a/init/Makefile b/init/Makefile
index eccdb205754d21..8c30e0e377da9b 100644
--- a/init/Makefile
+++ b/init/Makefile
@@ -6,6 +6,7 @@ obj-y				:= main.o version.o mounts.o initramfs.o
 mounts-y			:= do_mounts.o
 mounts-$(CONFIG_DEVFS_FS)	+= do_mounts_devfs.o
 mounts-$(CONFIG_BLK_DEV_RAM)	+= do_mounts_rd.o
+mounts-$(CONFIG_BLK_DEV_INITRD)	+= do_mounts_initrd.o
 mounts-$(CONFIG_BLK_DEV_MD)	+= do_mounts_md.o
 
 # files to be removed upon make clean
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
new file mode 100644
index 00000000000000..1bf482c1406cef
--- /dev/null
+++ b/init/do_mounts_initrd.c
@@ -0,0 +1,115 @@
+
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/minix_fs.h>
+#include <linux/ext2_fs.h>
+#include <linux/romfs_fs.h>
+#include <linux/initrd.h>
+
+#include "do_mounts.h"
+
+unsigned int real_root_dev;	/* do_proc_dointvec cannot handle kdev_t */
+static int __initdata old_fd, root_fd;
+static int __initdata mount_initrd = 1;
+
+static int __init no_initrd(char *str)
+{
+	mount_initrd = 0;
+	return 1;
+}
+
+__setup("noinitrd", no_initrd);
+
+static int __init do_linuxrc(void * shell)
+{
+	static char *argv[] = { "linuxrc", NULL, };
+	extern char * envp_init[];
+
+	close(old_fd);close(root_fd);
+	close(0);close(1);close(2);
+	setsid();
+	(void) open("/dev/console",O_RDWR,0);
+	(void) dup(0);
+	(void) dup(0);
+	return execve(shell, argv, envp_init);
+}
+
+static void __init handle_initrd(void)
+{
+	int error;
+	int i, pid;
+
+	real_root_dev = ROOT_DEV;
+	create_dev("/dev/root.old", Root_RAM0, NULL);
+	/* mount initrd on rootfs' /root */
+	mount_block_root("/dev/root.old", root_mountflags & ~MS_RDONLY);
+	sys_mkdir("/old", 0700);
+	root_fd = open("/", 0, 0);
+	old_fd = open("/old", 0, 0);
+	/* move initrd over / and chdir/chroot in initrd root */
+	sys_chdir("/root");
+	sys_mount(".", "/", NULL, MS_MOVE, NULL);
+	sys_chroot(".");
+	mount_devfs_fs ();
+
+	pid = kernel_thread(do_linuxrc, "/linuxrc", SIGCHLD);
+	if (pid > 0) {
+		while (pid != waitpid(-1, &i, 0))
+			yield();
+	}
+
+	/* move initrd to rootfs' /old */
+	sys_fchdir(old_fd);
+	sys_mount("/", ".", NULL, MS_MOVE, NULL);
+	/* switch root and cwd back to / of rootfs */
+	sys_fchdir(root_fd);
+	sys_chroot(".");
+	close(old_fd);
+	close(root_fd);
+	umount_devfs("/old/dev");
+
+	if (real_root_dev == Root_RAM0) {
+		sys_chdir("/old");
+		return;
+	}
+
+	ROOT_DEV = real_root_dev;
+	mount_root();
+
+	printk(KERN_NOTICE "Trying to move old root to /initrd ... ");
+	error = sys_mount("/old", "/root/initrd", NULL, MS_MOVE, NULL);
+	if (!error)
+		printk("okay\n");
+	else {
+		int fd = open("/dev/root.old", O_RDWR, 0);
+		printk("failed\n");
+		printk(KERN_NOTICE "Unmounting old root\n");
+		sys_umount("/old", MNT_DETACH);
+		printk(KERN_NOTICE "Trying to free ramdisk memory ... ");
+		if (fd < 0) {
+			error = fd;
+		} else {
+			error = sys_ioctl(fd, BLKFLSBUF, 0);
+			close(fd);
+		}
+		printk(!error ? "okay\n" : "failed\n");
+	}
+}
+
+int __init initrd_load(void)
+{
+	if (!mount_initrd)
+		return 0;
+
+	create_dev("/dev/ram", MKDEV(RAMDISK_MAJOR, 0), NULL);
+	create_dev("/dev/initrd", MKDEV(RAMDISK_MAJOR, INITRD_MINOR), NULL);
+	/* Load the initrd data into /dev/ram0. Execute it as initrd unless
+	 * /dev/ram0 is supposed to be our actual root device, in
+	 * that case the ram disk is just set up here, and gets
+	 * mounted in the normal path. */
+	if (rd_load_image("/dev/initrd") && ROOT_DEV != Root_RAM0) {
+		handle_initrd();
+		return 1;
+	}
+	return 0;
+}
diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c
index 0057b1c6f19b47..33dbb38ae80bbf 100644
--- a/init/do_mounts_rd.c
+++ b/init/do_mounts_rd.c
@@ -248,115 +248,6 @@ int __init rd_load_disk(int n)
 	return rd_load_image("/dev/root");
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-
-unsigned int real_root_dev;	/* do_proc_dointvec cannot handle kdev_t */
-static int __initdata old_fd, root_fd;
-static int __initdata mount_initrd = 1;
-
-static int __init no_initrd(char *str)
-{
-	mount_initrd = 0;
-	return 1;
-}
-
-__setup("noinitrd", no_initrd);
-
-static int __init do_linuxrc(void * shell)
-{
-	static char *argv[] = { "linuxrc", NULL, };
-	extern char * envp_init[];
-
-	close(old_fd);close(root_fd);
-	close(0);close(1);close(2);
-	setsid();
-	(void) open("/dev/console",O_RDWR,0);
-	(void) dup(0);
-	(void) dup(0);
-	return execve(shell, argv, envp_init);
-}
-
-static void __init handle_initrd(void)
-{
-	int error;
-	int i, pid;
-
-	real_root_dev = ROOT_DEV;
-	create_dev("/dev/root.old", Root_RAM0, NULL);
-	/* mount initrd on rootfs' /root */
-	mount_block_root("/dev/root.old", root_mountflags & ~MS_RDONLY);
-	sys_mkdir("/old", 0700);
-	root_fd = open("/", 0, 0);
-	old_fd = open("/old", 0, 0);
-	/* move initrd over / and chdir/chroot in initrd root */
-	sys_chdir("/root");
-	sys_mount(".", "/", NULL, MS_MOVE, NULL);
-	sys_chroot(".");
-	mount_devfs_fs ();
-
-	pid = kernel_thread(do_linuxrc, "/linuxrc", SIGCHLD);
-	if (pid > 0) {
-		while (pid != waitpid(-1, &i, 0))
-			yield();
-	}
-
-	/* move initrd to rootfs' /old */
-	sys_fchdir(old_fd);
-	sys_mount("/", ".", NULL, MS_MOVE, NULL);
-	/* switch root and cwd back to / of rootfs */
-	sys_fchdir(root_fd);
-	sys_chroot(".");
-	close(old_fd);
-	close(root_fd);
-	umount_devfs("/old/dev");
-
-	if (real_root_dev == Root_RAM0) {
-		sys_chdir("/old");
-		return;
-	}
-
-	ROOT_DEV = real_root_dev;
-	mount_root();
-
-	printk(KERN_NOTICE "Trying to move old root to /initrd ... ");
-	error = sys_mount("/old", "/root/initrd", NULL, MS_MOVE, NULL);
-	if (!error)
-		printk("okay\n");
-	else {
-		int fd = open("/dev/root.old", O_RDWR, 0);
-		printk("failed\n");
-		printk(KERN_NOTICE "Unmounting old root\n");
-		sys_umount("/old", MNT_DETACH);
-		printk(KERN_NOTICE "Trying to free ramdisk memory ... ");
-		if (fd < 0) {
-			error = fd;
-		} else {
-			error = sys_ioctl(fd, BLKFLSBUF, 0);
-			close(fd);
-		}
-		printk(!error ? "okay\n" : "failed\n");
-	}
-}
-
-int __init initrd_load(void)
-{
-	if (!mount_initrd)
-		return 0;
-
-	create_dev("/dev/ram", MKDEV(RAMDISK_MAJOR, 0), NULL);
-	create_dev("/dev/initrd", MKDEV(RAMDISK_MAJOR, INITRD_MINOR), NULL);
-	/* Load the initrd data into /dev/ram0. Execute it as initrd unless
-	 * /dev/ram0 is supposed to be our actual root device, in
-	 * that case the ram disk is just set up here, and gets
-	 * mounted in the normal path. */
-	if (rd_load_image("/dev/initrd") && ROOT_DEV != Root_RAM0) {
-		handle_initrd();
-		return 1;
-	}
-	return 0;
-}
-#endif
-
 #ifdef BUILD_CRAMDISK
 
 /*