btrfs: move definition of btrfs_raid_types to volumes.h

It's only internally used as another way to represent btrfs profiles,
it's not exposed through any on-disk format, in fact this
btrfs_raid_types is diverted from the on-disk format values.

Furthermore, since it's internal structure, its definition can change in
the future.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/space-info.h

@@ -3,6 +3,8 @@
 #ifndef BTRFS_SPACE_INFO_H
 #define BTRFS_SPACE_INFO_H
 
+#include "volumes.h"
+
 struct btrfs_space_info {
 	spinlock_t lock;
 

fs/btrfs/volumes.h

@@ -17,6 +17,19 @@ extern struct mutex uuid_mutex;
 
 #define BTRFS_STRIPE_LEN	SZ_64K
 
+enum btrfs_raid_types {
+	BTRFS_RAID_RAID10,
+	BTRFS_RAID_RAID1,
+	BTRFS_RAID_DUP,
+	BTRFS_RAID_RAID0,
+	BTRFS_RAID_SINGLE,
+	BTRFS_RAID_RAID5,
+	BTRFS_RAID_RAID6,
+	BTRFS_RAID_RAID1C3,
+	BTRFS_RAID_RAID1C4,
+	BTRFS_NR_RAID_TYPES
+};
+
 struct btrfs_io_geometry {
 	/* remaining bytes before crossing a stripe */
 	u64 len;

include/uapi/linux/btrfs_tree.h

@@ -880,19 +880,6 @@ struct btrfs_dev_replace_item {
 #define BTRFS_BLOCK_GROUP_RESERVED	(BTRFS_AVAIL_ALLOC_BIT_SINGLE | \
 					 BTRFS_SPACE_INFO_GLOBAL_RSV)
 
-enum btrfs_raid_types {
-	BTRFS_RAID_RAID10,
-	BTRFS_RAID_RAID1,
-	BTRFS_RAID_DUP,
-	BTRFS_RAID_RAID0,
-	BTRFS_RAID_SINGLE,
-	BTRFS_RAID_RAID5,
-	BTRFS_RAID_RAID6,
-	BTRFS_RAID_RAID1C3,
-	BTRFS_RAID_RAID1C4,
-	BTRFS_NR_RAID_TYPES
-};
-
 #define BTRFS_BLOCK_GROUP_TYPE_MASK	(BTRFS_BLOCK_GROUP_DATA |    \
 					 BTRFS_BLOCK_GROUP_SYSTEM |  \
 					 BTRFS_BLOCK_GROUP_METADATA)