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-rw-r--r--fs/btrfs/ctree.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index e801f226d7e..086303b9be6 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -220,10 +220,12 @@ struct extent_buffer *btrfs_read_lock_root_node(struct btrfs_root *root)
*/
static void add_root_to_dirty_list(struct btrfs_root *root)
{
+ spin_lock(&root->fs_info->trans_lock);
if (root->track_dirty && list_empty(&root->dirty_list)) {
list_add(&root->dirty_list,
&root->fs_info->dirty_cowonly_roots);
}
+ spin_unlock(&root->fs_info->trans_lock);
}
/*