Make sure we populate the initroot filesystem late enough

We should not initialize rootfs before all the core initializers have
run.  So do it as a separate stage just before starting the regular
driver initializers.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

4 files changed, 6 insertions, 9 deletions

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 6e9fcebbf89f..7437ccaada77 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -242,6 +242,7 @@
         *(.initcall4s.init)                                             \
         *(.initcall5.init)                                              \
         *(.initcall5s.init)                                             \
+        *(.initcallrootfs.init)                                         \
         *(.initcall6.init)                                              \
         *(.initcall6s.init)                                             \
         *(.initcall7.init)                                              \
diff --git a/include/linux/init.h b/include/linux/init.h
index 5eb5d24b7680..5a593a1dec1e 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -111,6 +111,7 @@ extern void setup_arch(char **);
 #define subsys_initcall_sync(fn)        __define_initcall("4s",fn,4s)
 #define fs_initcall(fn)                 __define_initcall("5",fn,5)
 #define fs_initcall_sync(fn)            __define_initcall("5s",fn,5s)
+#define rootfs_initcall(fn)             __define_initcall("rootfs",fn,rootfs)
 #define device_initcall(fn)             __define_initcall("6",fn,6)
 #define device_initcall_sync(fn)        __define_initcall("6s",fn,6s)
 #define late_initcall(fn)               __define_initcall("7",fn,7)
diff --git a/init/initramfs.c b/init/initramfs.c
index 85f04037ade1..4fa0f7977de1 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -526,7 +526,7 @@ static void __init free_initrd(void)
 
 #endif
 
-void __init populate_rootfs(void)
+static int __init populate_rootfs(void)
 {
         char *err = unpack_to_rootfs(__initramfs_start,
                          __initramfs_end - __initramfs_start, 0);
@@ -544,7 +544,7 @@ void __init populate_rootfs(void)
                         unpack_to_rootfs((char *)initrd_start,
                                 initrd_end - initrd_start, 0);
                         free_initrd();
-                        return;
+                        return 0;
                 }
                 printk("it isn't (%s); looks like an initrd\n", err);
                 fd = sys_open("/initrd.image", O_WRONLY|O_CREAT, 0700);
@@ -565,4 +565,6 @@ void __init populate_rootfs(void)
 #endif
         }
 #endif
+        return 0;
 }
+rootfs_initcall(populate_rootfs);
diff --git a/init/main.c b/init/main.c
index fcd9ddc3ccf5..e3f0bb20b4dd 100644
--- a/init/main.c
+++ b/init/main.c
@@ -94,7 +94,6 @@ extern void pidmap_init(void);
 extern void prio_tree_init(void);
 extern void radix_tree_init(void);
 extern void free_initmem(void);
-extern void populate_rootfs(void);
 extern void driver_init(void);
 extern void prepare_namespace(void);
 #ifdef  CONFIG_ACPI
@@ -745,12 +744,6 @@ static int init(void * unused)
 
         cpuset_init_smp();
 
-        /*
-         * Do this before initcalls, because some drivers want to access
-         * firmware files.
-         */
-        populate_rootfs();
-
         do_basic_setup();
 
         /*