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

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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;
}