[PATCH 4.11 05/36] ceph: choose readdir frag based on previous readdir reply

4.11-stable review patch. If anyone has any objections, please let me know. -- From: Yan, Zheng commit b50c2de51e611da90cf3cf04c058f7e9bbe79e93 upstream. The dirfragtree is lazily updated, it's not always accurate. Infinite loops happens in following

[PATCH 4.11 05/36] ceph: choose readdir frag based on previous readdir reply

4.11-stable review patch. If anyone has any objections, please let me know. -- From: Yan, Zheng commit b50c2de51e611da90cf3cf04c058f7e9bbe79e93 upstream. The dirfragtree is lazily updated, it's not always accurate. Infinite loops happens in following circumstance. - client