md: move the early init autodetect code to drivers/md/

Just like the NFS and CIFS root code this better lives with the
driver it is tightly integrated with.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Song Liu <song@kernel.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/md/Makefile b/drivers/md/Makefile
index 31840f95cd408bc70e6152a6d4d62446e218e62f..6d3e234dc46a5d44db7e15cc4dc1d0e6d1b9213d 100644 (file)
--- a/drivers/md/Makefile
+++ b/drivers/md/Makefile
@@ -43,6 +43,9 @@ obj-$(CONFIG_MD_FAULTY)               += faulty.o
 obj-$(CONFIG_MD_CLUSTER)       += md-cluster.o
 obj-$(CONFIG_BCACHE)           += bcache/
 obj-$(CONFIG_BLK_DEV_MD)       += md-mod.o
+ifeq ($(CONFIG_BLK_DEV_MD),y)
+obj-y                          += md-autodetect.o
+endif
 obj-$(CONFIG_BLK_DEV_DM)       += dm-mod.o
 obj-$(CONFIG_BLK_DEV_DM_BUILTIN) += dm-builtin.o
 obj-$(CONFIG_DM_UNSTRIPED)     += dm-unstripe.o

diff --git a/init/do_mounts_md.c b/drivers/md/md-autodetect.c
similarity index 96%
rename from init/do_mounts_md.c
rename to drivers/md/md-autodetect.c
index 359363e85ccd0b969c68cf88a22818c0af765c6f..fe806f7b9759a163c08bb8244f417b6d5b7333b4 100644 (file)
--- a/init/do_mounts_md.c
+++ b/drivers/md/md-autodetect.c
@@ -1,10 +1,15 @@
 // SPDX-License-Identifier: GPL-2.0
+#include <linux/kernel.h>
+#include <linux/blkdev.h>
+#include <linux/init.h>
+#include <linux/syscalls.h>
+#include <linux/mount.h>
+#include <linux/major.h>
 #include <linux/delay.h>
+#include <linux/raid/detect.h>
 #include <linux/raid/md_u.h>
 #include <linux/raid/md_p.h>
 
-#include "do_mounts.h"
-
 /*
  * When md (and any require personalities) are compiled into the kernel
  * (not a module), arrays can be assembles are boot time using with AUTODETECT
@@ -114,6 +119,12 @@ static int __init md_setup(char *str)
        return 1;
 }
 
+static inline int create_dev(char *name, dev_t dev)
+{
+       ksys_unlink(name);
+       return ksys_mknod(name, S_IFBLK|0600, new_encode_dev(dev));
+}
+
 static void __init md_setup_drive(void)
 {
        int minor, i, ent, partitioned;

diff --git a/include/linux/raid/detect.h b/include/linux/raid/detect.h
index 37dd3f40cd316eb2287ce27dc7659a4875ef31ad..1f029a71c3ef05f7f453e2bd7f4b470ee0b840c9 100644 (file)
--- a/include/linux/raid/detect.h
+++ b/include/linux/raid/detect.h
@@ -1,3 +1,11 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 
 void md_autodetect_dev(dev_t dev);
+
+#ifdef CONFIG_BLK_DEV_MD
+void md_run_setup(void);
+#else
+static inline void md_run_setup(void)
+{
+}
+#endif

diff --git a/init/Makefile b/init/Makefile
index 57499b1ff4714dd6ad4b3b636998b0cba444b66b..6bc37f64b3617cd6a21c46f14f528441d45328c5 100644 (file)
--- a/init/Makefile
+++ b/init/Makefile
@@ -18,7 +18,6 @@ obj-y                          += init_task.o
 mounts-y                       := do_mounts.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
 
 # dependencies on generated files need to be listed explicitly
 $(obj)/version.o: include/generated/compile.h

diff --git a/init/do_mounts.c b/init/do_mounts.c
index 29d326b6c29d2d05b05adf647e1f38bb1bef07d1..1a4dfa17fb2899005a10dd22fba9b2626d9781dd 100644 (file)
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -23,6 +23,7 @@
 #include <linux/nfs_fs.h>
 #include <linux/nfs_fs_sb.h>
 #include <linux/nfs_mount.h>
+#include <linux/raid/detect.h>
 #include <uapi/linux/mount.h>
 
 #include "do_mounts.h"

diff --git a/init/do_mounts.h b/init/do_mounts.h
index 7513d1c14d13fe2f5c9072a8929b41d70f0c1f5c..50d6c8941e15a1e68ca19b033d4b20dc9aa704d5 100644 (file)
--- a/init/do_mounts.h
+++ b/init/do_mounts.h
@@ -41,13 +41,3 @@ bool __init initrd_load(void);
 static inline bool initrd_load(void) { return false; }
 
 #endif
-
-#ifdef CONFIG_BLK_DEV_MD
-
-void md_run_setup(void);
-
-#else
-
-static inline void md_run_setup(void) {}
-
-#endif