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OpenCloudOS-Kernel
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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>
This commit is contained in:
Yan Zheng 2009-06-15 20:01:02 -04:00 committed by Chris Mason
parent b263c2c8bf
commit 978d910d31
1 changed files with 6 additions and 6 deletions
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12
fs/btrfs/transaction.c
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@ -543,13 +543,13 @@ static noinline int commit_fs_roots(struct btrfs_trans_handle *trans,
btrfs_free_log(trans, root);
btrfs_update_reloc_root(trans, root);
if (root->commit_root == root->node)
continue;
if (root->commit_root != root->node) {
free_extent_buffer(root->commit_root);
root->commit_root = btrfs_root_node(root);
btrfs_set_root_node(&root->root_item,
root->node);
}
free_extent_buffer(root->commit_root);
root->commit_root = btrfs_root_node(root);
btrfs_set_root_node(&root->root_item, root->node);
err = btrfs_update_root(trans, fs_info->tree_root,
&root->root_key,
&root->root_item);