Recently I try to clean up all my old local branches of xfstests, and found some patches aren't merged for long time. I abandoned most of them, but some of them might be still worth reviewing, so I rebased them to latest xfstests and send out to get review. [PATCH 1/4] is tiny patch for glusterfs testing failure. [PATCH 2/4] is for large fs testing [PATCH 3/4] and [4/4] are two different new cases to cover regression issues. So feel free to give them your review point, especially the [4/4], it still trigger a unknown xfs failure on latest upstream kernel. Thanks, Zorro
