Btrfs: add sanity tests for new qgroup accounting code
This exercises the various parts of the new qgroup accounting code. We do some
basic stuff and do some things with the shared refs to make sure all that code
works. I had to add a bunch of infrastructure because I needed to be able to
insert items into a fake tree without having to do all the hard work myself,
hopefully this will be usefull in the future. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 343eb10..ddf16bf 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2992,6 +2992,10 @@
int (*process_func)(struct btrfs_trans_handle *, struct btrfs_root *,
u64, u64, u64, u64, u64, u64, int);
+#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
+ if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state)))
+ return 0;
+#endif
ref_root = btrfs_header_owner(buf);
nritems = btrfs_header_nritems(buf);
level = btrfs_header_level(buf);
@@ -6151,6 +6155,10 @@
int ret;
struct btrfs_fs_info *fs_info = root->fs_info;
+#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
+ if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state)))
+ return 0;
+#endif
add_pinned_bytes(root->fs_info, num_bytes, owner, root_objectid);
/*
@@ -7157,6 +7165,15 @@
bool skinny_metadata = btrfs_fs_incompat(root->fs_info,
SKINNY_METADATA);
+#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
+ if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state))) {
+ buf = btrfs_init_new_buffer(trans, root, root->alloc_bytenr,
+ blocksize, level);
+ if (!IS_ERR(buf))
+ root->alloc_bytenr += blocksize;
+ return buf;
+ }
+#endif
block_rsv = use_block_rsv(trans, root, blocksize);
if (IS_ERR(block_rsv))
return ERR_CAST(block_rsv);