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btrfs: tree-checker: don't fail on empty extent roots for extent tree v2 

For extent tree v2 we can definitely have empty extent roots, so skip
this particular check if we have that set.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2021-12-15 15:40:05 -05:00 committed by David Sterba
parent 63cd070dec
commit c2fa821cc9
1 changed files with 13 additions and 1 deletions
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14
fs/btrfs/tree-checker.c
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@ -1648,7 +1648,6 @@ static int check_leaf(struct extent_buffer *leaf, bool check_item_data)
/* These trees must never be empty */
if (unlikely(owner == BTRFS_ROOT_TREE_OBJECTID ||
owner == BTRFS_CHUNK_TREE_OBJECTID ||
owner == BTRFS_EXTENT_TREE_OBJECTID ||
owner == BTRFS_DEV_TREE_OBJECTID ||
owner == BTRFS_FS_TREE_OBJECTID ||
owner == BTRFS_DATA_RELOC_TREE_OBJECTID)) {
@ -1657,12 +1656,25 @@ static int check_leaf(struct extent_buffer *leaf, bool check_item_data)
owner);
return -EUCLEAN;
}
/* Unknown tree */
if (unlikely(owner == 0)) {
generic_err(leaf, 0,
"invalid owner, root 0 is not defined");
return -EUCLEAN;
}
/* EXTENT_TREE_V2 can have empty extent trees. */
if (btrfs_fs_incompat(fs_info, EXTENT_TREE_V2))
return 0;
if (unlikely(owner == BTRFS_EXTENT_TREE_OBJECTID)) {
generic_err(leaf, 0,
"invalid root, root %llu must never be empty",
owner);
return -EUCLEAN;
}
return 0;
}