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-rw-r--r--fs/btrfs/extent-io-tree.h18
1 files changed, 15 insertions, 3 deletions
diff --git a/fs/btrfs/extent-io-tree.h b/fs/btrfs/extent-io-tree.h
index 5602b0137f..ebe6390d65 100644
--- a/fs/btrfs/extent-io-tree.h
+++ b/fs/btrfs/extent-io-tree.h
@@ -87,9 +87,17 @@ enum {
struct extent_io_tree {
struct rb_root state;
- struct btrfs_fs_info *fs_info;
- /* Inode associated with this tree, or NULL. */
- struct btrfs_inode *inode;
+ /*
+ * The fs_info is needed for trace points, a tree attached to an inode
+ * needs the inode.
+ *
+ * owner == IO_TREE_INODE_IO - then inode is valid and fs_info can be
+ * accessed as inode->root->fs_info
+ */
+ union {
+ struct btrfs_fs_info *fs_info;
+ struct btrfs_inode *inode;
+ };
/* Who owns this io tree, should be one of IO_TREE_* */
u8 owner;
@@ -112,6 +120,10 @@ struct extent_state {
#endif
};
+struct btrfs_inode *extent_io_tree_to_inode(struct extent_io_tree *tree);
+const struct btrfs_inode *extent_io_tree_to_inode_const(const struct extent_io_tree *tree);
+const struct btrfs_fs_info *extent_io_tree_to_fs_info(const struct extent_io_tree *tree);
+
void extent_io_tree_init(struct btrfs_fs_info *fs_info,
struct extent_io_tree *tree, unsigned int owner);
void extent_io_tree_release(struct extent_io_tree *tree);