Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[firefly-linux-kernel-4.4.55.git] / fs / btrfs / free-space-cache.h

diff --git a/fs/btrfs/free-space-cache.h b/fs/btrfs/free-space-cache.h
index 65c3b935289f3814747947e8967e091cf0e4b1a3..8b7f19f4496153886975547923cdcdc815940e96 100644 (file)
--- a/fs/btrfs/free-space-cache.h
+++ b/fs/btrfs/free-space-cache.h
@@ -27,6 +27,25 @@ struct btrfs_free_space {
        struct list_head list;
 };
 
+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);
@@ -35,6 +54,8 @@ int create_free_space_inode(struct btrfs_root *root,
                            struct btrfs_block_group_cache *block_group,
                            struct btrfs_path *path);
 
+int btrfs_check_trunc_cache_free_space(struct btrfs_root *root,
+                                      struct btrfs_block_rsv *rsv);
 int btrfs_truncate_free_space_cache(struct btrfs_root *root,
                                    struct btrfs_trans_handle *trans,
                                    struct btrfs_path *path,
@@ -45,17 +66,38 @@ 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);
-int btrfs_add_free_space(struct btrfs_block_group_cache *block_group,
-                        u64 bytenr, u64 size);
+
+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,
@@ -70,4 +112,9 @@ int btrfs_return_cluster_to_free_space(
                               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);
+
+#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
+void btrfs_test_free_space_cache(void);
+#endif
+
 #endif