md: Remove unnecessary #includes, #defines, and function declarations.

A lot of cruft has gathered over the years.  Time to remove it.
Signed-off-by: NeilBrown <neilb@suse.de>

drivers/md/linear.c

@@ -16,16 +16,8 @@
    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  
 */
 
-#include <linux/module.h>
-
-#include <linux/raid/md.h>
-#include <linux/slab.h>
 #include <linux/raid/linear.h>
 
-#define MAJOR_NR MD_MAJOR
-#define MD_DRIVER
-#define MD_PERSONALITY
-
 /*
  * find which device holds a particular offset 
  */

drivers/md/md.c

@@ -32,31 +32,20 @@
    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
 
-#include <linux/module.h>
-#include <linux/kernel.h>
 #include <linux/kthread.h>
-#include <linux/linkage.h>
 #include <linux/raid/md.h>
 #include <linux/raid/bitmap.h>
 #include <linux/sysctl.h>
 #include <linux/buffer_head.h> /* for invalidate_bdev */
 #include <linux/poll.h>
-#include <linux/mutex.h>
 #include <linux/ctype.h>
-#include <linux/freezer.h>
-
-#include <linux/init.h>
-
+#include <linux/hdreg.h>
+#include <linux/proc_fs.h>
+#include <linux/random.h>
+#include <linux/reboot.h>
 #include <linux/file.h>
 
-#ifdef CONFIG_KMOD
-#include <linux/kmod.h>
-#endif
-
-#include <asm/unaligned.h>
-
 #define MAJOR_NR MD_MAJOR
-#define MD_DRIVER
 
 /* 63 partitions with the alternate major number (mdp) */
 #define MdpMinorShift 6
@@ -3559,12 +3548,10 @@ static int do_md_run(mddev_t * mddev)
 		}
 	}
 
-#ifdef CONFIG_KMOD
 	if (mddev->level != LEVEL_NONE)
 		request_module("md-level-%d", mddev->level);
 	else if (mddev->clevel[0])
 		request_module("md-%s", mddev->clevel);
-#endif
 
 	/*
 	 * Drop all container device buffers, from now on

drivers/md/multipath.c

@@ -19,16 +19,7 @@
  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
 #include <linux/raid/multipath.h>
-#include <linux/buffer_head.h>
-#include <asm/atomic.h>
-
-#define MAJOR_NR MD_MAJOR
-#define MD_DRIVER
-#define MD_PERSONALITY
 
 #define MAX_WORK_PER_DISK 128
 

drivers/md/raid0.c

@@ -18,13 +18,8 @@
    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  
 */
 
-#include <linux/module.h>
 #include <linux/raid/raid0.h>
 
-#define MAJOR_NR MD_MAJOR
-#define MD_DRIVER
-#define MD_PERSONALITY
-
 static void raid0_unplug(struct request_queue *q)
 {
 	mddev_t *mddev = q->queuedata;

drivers/md/raid5.c

@@ -43,12 +43,7 @@
  * miss any bits.
  */
 
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/highmem.h>
-#include <linux/bitops.h>
 #include <linux/kthread.h>
-#include <asm/atomic.h>
 #include "raid6.h"
 
 #include <linux/raid/bitmap.h>

drivers/md/raid6.h

@@ -18,15 +18,6 @@
 /* Set to 1 to use kernel-wide empty_zero_page */
 #define RAID6_USE_EMPTY_ZERO_PAGE 0
 
-#include <linux/module.h>
-#include <linux/stddef.h>
-#include <linux/compiler.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/mempool.h>
-#include <linux/list.h>
-#include <linux/vmalloc.h>
 #include <linux/raid/md.h>
 #include <linux/raid/raid5.h>
 

include/linux/raid/md.h

@@ -19,27 +19,7 @@
 #define _MD_H
 
 #include <linux/blkdev.h>
-#include <linux/major.h>
-#include <linux/ioctl.h>
-#include <linux/types.h>
-#include <linux/bitops.h>
-#include <linux/module.h>
-#include <linux/hdreg.h>
-#include <linux/proc_fs.h>
 #include <linux/seq_file.h>
-#include <linux/smp_lock.h>
-#include <linux/delay.h>
-#include <net/checksum.h>
-#include <linux/random.h>
-#include <linux/kernel_stat.h>
-#include <asm/io.h>
-#include <linux/completion.h>
-#include <linux/mempool.h>
-#include <linux/list.h>
-#include <linux/reboot.h>
-#include <linux/vmalloc.h>
-#include <linux/blkpg.h>
-#include <linux/bio.h>
 
 /*
  * 'md_p.h' holds the 'physical' layout of RAID devices
@@ -83,10 +63,8 @@ extern void md_wakeup_thread(mdk_thread_t *thread);
 extern void md_check_recovery(mddev_t *mddev);
 extern void md_write_start(mddev_t *mddev, struct bio *bi);
 extern void md_write_end(mddev_t *mddev);
-extern void md_handle_safemode(mddev_t *mddev);
 extern void md_done_sync(mddev_t *mddev, int blocks, int ok);
 extern void md_error (mddev_t *mddev, mdk_rdev_t *rdev);
-extern void md_unplug_mddev(mddev_t *mddev);
 
 extern void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev,
 			   sector_t sector, int size, struct page *page);