Btrfs: add sanity test for outstanding_extents accounting

[cascardo/linux.git] / fs / btrfs / inode.c

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index bb74a41..3717b3d 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -108,6 +108,13 @@ static struct extent_map *create_pinned_em(struct inode *inode, u64 start,
 
 static int btrfs_dirty_inode(struct inode *inode);
 
+#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
+void btrfs_test_inode_set_ops(struct inode *inode)
+{
+       BTRFS_I(inode)->io_tree.ops = &btrfs_extent_io_ops;
+}
+#endif
+
 static int btrfs_init_inode_security(struct btrfs_trans_handle *trans,
                                     struct inode *inode,  struct inode *dir,
                                     const struct qstr *qstr)
@@ -1694,6 +1701,10 @@ static void btrfs_set_bit_hook(struct inode *inode,
                        spin_unlock(&BTRFS_I(inode)->lock);
                }
 
+               /* For sanity tests */
+               if (btrfs_test_is_dummy_root(root))
+                       return;
+
                __percpu_counter_add(&root->fs_info->delalloc_bytes, len,
                                     root->fs_info->delalloc_batch);
                spin_lock(&BTRFS_I(inode)->lock);
@@ -1749,6 +1760,10 @@ static void btrfs_clear_bit_hook(struct inode *inode,
                    root != root->fs_info->tree_root)
                        btrfs_delalloc_release_metadata(inode, len);
 
+               /* For sanity tests. */
+               if (btrfs_test_is_dummy_root(root))
+                       return;
+
                if (root->root_key.objectid != BTRFS_DATA_RELOC_TREE_OBJECTID
                    && do_list && !(state->state & EXTENT_NORESERVE))
                        btrfs_free_reserved_data_space(inode, len);