diff --git a/drivers/md/md-bitmap.h b/drivers/md/md-bitmap.h
index 662e6fc14..6050d422b 100644
--- a/drivers/md/md-bitmap.h
+++ b/drivers/md/md-bitmap.h
@@ -7,7 +7,7 @@
 #ifndef BITMAP_H
 #define BITMAP_H 1
 
-#define BITMAP_MAGIC 0x6d746962
+#include <linux/raid/md_p.h>
 
 typedef __u16 bitmap_counter_t;
 #define COUNTER_BITS 16
@@ -18,46 +18,6 @@ typedef __u16 bitmap_counter_t;
 #define RESYNC_MASK ((bitmap_counter_t) (1 << (COUNTER_BITS - 2)))
 #define COUNTER_MAX ((bitmap_counter_t) RESYNC_MASK - 1)
 
-/* use these for bitmap->flags and bitmap->sb->state bit-fields */
-enum bitmap_state {
-	BITMAP_STALE	   = 1,  /* the bitmap file is out of date or had -EIO */
-	BITMAP_WRITE_ERROR = 2, /* A write error has occurred */
-	BITMAP_HOSTENDIAN  =15,
-};
-
-/* the superblock at the front of the bitmap file -- little endian */
-typedef struct bitmap_super_s {
-	__le32 magic;        /*  0  BITMAP_MAGIC */
-	__le32 version;      /*  4  the bitmap major for now, could change... */
-	__u8  uuid[16];      /*  8  128 bit uuid - must match md device uuid */
-	__le64 events;       /* 24  event counter for the bitmap (1)*/
-	__le64 events_cleared;/*32  event counter when last bit cleared (2) */
-	__le64 sync_size;    /* 40  the size of the md device's sync range(3) */
-	__le32 state;        /* 48  bitmap state information */
-	__le32 chunksize;    /* 52  the bitmap chunk size in bytes */
-	__le32 daemon_sleep; /* 56  seconds between disk flushes */
-	__le32 write_behind; /* 60  number of outstanding write-behind writes */
-	__le32 sectors_reserved; /* 64 number of 512-byte sectors that are
-				  * reserved for the bitmap. */
-	__le32 nodes;        /* 68 the maximum number of nodes in cluster. */
-	__u8 cluster_name[64]; /* 72 cluster name to which this md belongs */
-	__u8  pad[256 - 136]; /* set to zero */
-} bitmap_super_t;
-
-/* notes:
- * (1) This event counter is updated before the eventcounter in the md superblock
- *    When a bitmap is loaded, it is only accepted if this event counter is equal
- *    to, or one greater than, the event counter in the superblock.
- * (2) This event counter is updated when the other one is *if*and*only*if* the
- *    array is not degraded.  As bits are not cleared when the array is degraded,
- *    this represents the last time that any bits were cleared.
- *    If a device is being added that has an event count with this value or
- *    higher, it is accepted as conforming to the bitmap.
- * (3)This is the number of sectors represented by the bitmap, and is the range that
- *    resync happens across.  For raid1 and raid5/6 it is the size of individual
- *    devices.  For raid10 it is the size of the array.
- */
-
 struct md_bitmap_stats {
 	u64		events_cleared;
 	int		behind_writes;
diff --git a/include/uapi/linux/raid/md_p.h b/include/uapi/linux/raid/md_p.h
index 5a43c23f5..8131e7713 100644
--- a/include/uapi/linux/raid/md_p.h
+++ b/include/uapi/linux/raid/md_p.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
 /*
    md_p.h : physical layout of Linux RAID devices
-          Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman
+          Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman, Peter T. Breuer
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -426,4 +426,46 @@ struct ppl_header {
 	struct ppl_header_entry entries[PPL_HDR_MAX_ENTRIES];
 } __attribute__ ((__packed__));
 
+#define BITMAP_MAGIC 0x6d746962
+
+/* use these for bitmap->flags and bitmap->sb->state bit-fields */
+enum bitmap_state {
+	BITMAP_STALE	   = 1,  /* the bitmap file is out of date or had -EIO */
+	BITMAP_WRITE_ERROR = 2, /* A write error has occurred */
+	BITMAP_HOSTENDIAN  =15,
+};
+
+/* the superblock at the front of the bitmap file -- little endian */
+typedef struct bitmap_super_s {
+	__le32 magic;        /*  0  BITMAP_MAGIC */
+	__le32 version;      /*  4  the bitmap major for now, could change... */
+	__u8  uuid[16];      /*  8  128 bit uuid - must match md device uuid */
+	__le64 events;       /* 24  event counter for the bitmap (1)*/
+	__le64 events_cleared;/*32  event counter when last bit cleared (2) */
+	__le64 sync_size;    /* 40  the size of the md device's sync range(3) */
+	__le32 state;        /* 48  bitmap state information */
+	__le32 chunksize;    /* 52  the bitmap chunk size in bytes */
+	__le32 daemon_sleep; /* 56  seconds between disk flushes */
+	__le32 write_behind; /* 60  number of outstanding write-behind writes */
+	__le32 sectors_reserved; /* 64 number of 512-byte sectors that are
+				  * reserved for the bitmap. */
+	__le32 nodes;        /* 68 the maximum number of nodes in cluster. */
+	__u8 cluster_name[64]; /* 72 cluster name to which this md belongs */
+	__u8  pad[256 - 136]; /* set to zero */
+} bitmap_super_t;
+
+/* notes:
+ * (1) This event counter is updated before the eventcounter in the md superblock
+ *    When a bitmap is loaded, it is only accepted if this event counter is equal
+ *    to, or one greater than, the event counter in the superblock.
+ * (2) This event counter is updated when the other one is *if*and*only*if* the
+ *    array is not degraded.  As bits are not cleared when the array is degraded,
+ *    this represents the last time that any bits were cleared.
+ *    If a device is being added that has an event count with this value or
+ *    higher, it is accepted as conforming to the bitmap.
+ * (3)This is the number of sectors represented by the bitmap, and is the range that
+ *    resync happens across.  For raid1 and raid5/6 it is the size of individual
+ *    devices.  For raid10 it is the size of the array.
+ */
+
 #endif
