1 files changed, 64 insertions, 4 deletions

diff --git a/fs/btrfs/free-space-cache.h b/fs/btrfs/free-space-cache.h
index 890a8e79011b..8f2613f779ed 100644
--- a/fs/btrfs/free-space-cache.h
+++ b/fs/btrfs/free-space-cache.h
@@ -27,17 +27,75 @@ struct btrfs_free_space {
         struct list_head list;
 };
 
-int btrfs_add_free_space(struct btrfs_block_group_cache *block_group,
-                         u64 bytenr, u64 size);
+struct btrfs_free_space_ctl {
+        spinlock_t tree_lock;
+        struct rb_root free_space_offset;
+        u64 free_space;
+        int extents_thresh;
+        int free_extents;
+        int total_bitmaps;
+        int unit;
+        u64 start;
+        struct btrfs_free_space_op *op;
+        void *private;
+};
+
+struct btrfs_free_space_op {
+        void (*recalc_thresholds)(struct btrfs_free_space_ctl *ctl);
+        bool (*use_bitmap)(struct btrfs_free_space_ctl *ctl,
+                           struct btrfs_free_space *info);
+};
+
+struct inode *lookup_free_space_inode(struct btrfs_root *root,
+                                      struct btrfs_block_group_cache
+                                      *block_group, struct btrfs_path *path);
+int create_free_space_inode(struct btrfs_root *root,
+                            struct btrfs_trans_handle *trans,
+                            struct btrfs_block_group_cache *block_group,
+                            struct btrfs_path *path);
+
+int btrfs_truncate_free_space_cache(struct btrfs_root *root,
+                                    struct btrfs_trans_handle *trans,
+                                    struct btrfs_path *path,
+                                    struct inode *inode);
+int load_free_space_cache(struct btrfs_fs_info *fs_info,
+                          struct btrfs_block_group_cache *block_group);
+int btrfs_write_out_cache(struct btrfs_root *root,
+                          struct btrfs_trans_handle *trans,
+                          struct btrfs_block_group_cache *block_group,
+                          struct btrfs_path *path);
+
+struct inode *lookup_free_ino_inode(struct btrfs_root *root,
+                                    struct btrfs_path *path);
+int create_free_ino_inode(struct btrfs_root *root,
+                          struct btrfs_trans_handle *trans,
+                          struct btrfs_path *path);
+int load_free_ino_cache(struct btrfs_fs_info *fs_info,
+                        struct btrfs_root *root);
+int btrfs_write_out_ino_cache(struct btrfs_root *root,
+                              struct btrfs_trans_handle *trans,
+                              struct btrfs_path *path);
+
+void btrfs_init_free_space_ctl(struct btrfs_block_group_cache *block_group);
+int __btrfs_add_free_space(struct btrfs_free_space_ctl *ctl,
+                           u64 bytenr, u64 size);
+static inline int
+btrfs_add_free_space(struct btrfs_block_group_cache *block_group,
+                     u64 bytenr, u64 size)
+{
+        return __btrfs_add_free_space(block_group->free_space_ctl,
+                                      bytenr, size);
+}
 int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group,
                             u64 bytenr, u64 size);
+void __btrfs_remove_free_space_cache(struct btrfs_free_space_ctl *ctl);
 void btrfs_remove_free_space_cache(struct btrfs_block_group_cache
-                                   *block_group);
+                                     *block_group);
 u64 btrfs_find_space_for_alloc(struct btrfs_block_group_cache *block_group,
                                u64 offset, u64 bytes, u64 empty_size);
+u64 btrfs_find_ino_for_alloc(struct btrfs_root *fs_root);
 void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group,
                            u64 bytes);
-u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group);
 int btrfs_find_space_cluster(struct btrfs_trans_handle *trans,
                              struct btrfs_root *root,
                              struct btrfs_block_group_cache *block_group,
@@ -50,4 +108,6 @@ u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group,
 int btrfs_return_cluster_to_free_space(
                                struct btrfs_block_group_cache *block_group,
                                struct btrfs_free_cluster *cluster);
+int btrfs_trim_block_group(struct btrfs_block_group_cache *block_group,
+                           u64 *trimmed, u64 start, u64 end, u64 minlen);
 #endif