btrfs: add forward declarations and headers, part 3

Do a cleanup in the rest of the headers:

- add forward declarations for types referenced by pointers
- add includes when types need them

This fixes potential compilation problems if the headers are reordered
or the missing includes are not provided indirectly.

Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 12 insertions, 13 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index eede81288196..c03c58246033 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -7,25 +7,24 @@
 #define BTRFS_CTREE_H
 
 #include <linux/pagemap.h>
+#include <linux/spinlock.h>
+#include <linux/rbtree.h>
+#include <linux/mutex.h>
+#include <linux/wait.h>
+#include <linux/list.h>
+#include <linux/atomic.h>
+#include <linux/xarray.h>
+#include <linux/refcount.h>
+#include <uapi/linux/btrfs_tree.h>
 #include "locking.h"
 #include "fs.h"
 #include "accessors.h"
+#include "extent-io-tree.h"
 
+struct extent_buffer;
+struct btrfs_block_rsv;
 struct btrfs_trans_handle;
-struct btrfs_transaction;
-struct btrfs_pending_snapshot;
-struct btrfs_delayed_ref_root;
-struct btrfs_space_info;
 struct btrfs_block_group;
-struct btrfs_ordered_sum;
-struct btrfs_ref;
-struct btrfs_bio;
-struct btrfs_ioctl_encoded_io_args;
-struct btrfs_device;
-struct btrfs_fs_devices;
-struct btrfs_balance_control;
-struct btrfs_delayed_root;
-struct reloc_control;
 
 /* Read ahead values for struct btrfs_path.reada */
 enum {