Btrfs: kill BUG_ON in run_delayed_tree_ref
In a corrupted btrfs image, we can come across this BUG_ON and get an unreponsive system, but if we return errors instead, its caller can handle everything gracefully by aborting the current transaction. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
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@ -2352,7 +2352,13 @@ static int run_delayed_tree_ref(struct btrfs_trans_handle *trans,
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ins.type = BTRFS_EXTENT_ITEM_KEY;
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ins.type = BTRFS_EXTENT_ITEM_KEY;
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}
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}
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BUG_ON(node->ref_mod != 1);
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if (node->ref_mod != 1) {
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btrfs_err(root->fs_info,
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"btree block(%llu) has %d references rather than 1: action %d ref_root %llu parent %llu",
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node->bytenr, node->ref_mod, node->action, ref_root,
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parent);
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return -EIO;
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}
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if (node->action == BTRFS_ADD_DELAYED_REF && insert_reserved) {
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if (node->action == BTRFS_ADD_DELAYED_REF && insert_reserved) {
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BUG_ON(!extent_op || !extent_op->update_flags);
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BUG_ON(!extent_op || !extent_op->update_flags);
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ret = alloc_reserved_tree_block(trans, root,
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ret = alloc_reserved_tree_block(trans, root,
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