From 282c105225ec3229f344c5fced795b9e1e634440 Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Wed, 30 Jul 2014 10:12:47 +0800 Subject: [PATCH] ceph: fix kick_requests() __do_request() may unregister the request. So we should update iterator 'p' before calling __do_request() Signed-off-by: Yan, Zheng --- fs/ceph/mds_client.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index fd8d7ca80e75..bad07c09f91e 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -2067,11 +2067,12 @@ static void __wake_requests(struct ceph_mds_client *mdsc, static void kick_requests(struct ceph_mds_client *mdsc, int mds) { struct ceph_mds_request *req; - struct rb_node *p; + struct rb_node *p = rb_first(&mdsc->request_tree); dout("kick_requests mds%d\n", mds); - for (p = rb_first(&mdsc->request_tree); p; p = rb_next(p)) { + while (p) { req = rb_entry(p, struct ceph_mds_request, r_node); + p = rb_next(p); if (req->r_got_unsafe) continue; if (req->r_session && -- 2.39.5