Btrfs: always update root items for fs trees at commit time
commit_fs_roots skips updating root items for fs trees that aren't modified. This is unsafe now that relocation code modifies root item's last_snapshot field without modifying corresponding fs tree. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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@ -543,13 +543,13 @@ static noinline int commit_fs_roots(struct btrfs_trans_handle *trans,
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btrfs_free_log(trans, root);
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btrfs_update_reloc_root(trans, root);
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if (root->commit_root == root->node)
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continue;
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if (root->commit_root != root->node) {
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free_extent_buffer(root->commit_root);
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root->commit_root = btrfs_root_node(root);
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btrfs_set_root_node(&root->root_item,
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root->node);
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}
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free_extent_buffer(root->commit_root);
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root->commit_root = btrfs_root_node(root);
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btrfs_set_root_node(&root->root_item, root->node);
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err = btrfs_update_root(trans, fs_info->tree_root,
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&root->root_key,
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&root->root_item);
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