From: Yan, Zheng <ukernel@gmail.com>
Date: Thu, 11 Sep 2014 06:28:56 +0000 (+0800)
Subject: ceph: make sure request isn't in any waiting list when kicking request.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=03974e8177b36d672eb59658f976f03cb77c1129;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

ceph: make sure request isn't in any waiting list when kicking request.

we may corrupt waiting list if a request in the waiting list is kicked.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
---

diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 267ba4496dc8..a17fc49c9948 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -2078,6 +2078,7 @@ static void kick_requests(struct ceph_mds_client *mdsc, int mds)
 		if (req->r_session &&
 		    req->r_session->s_mds == mds) {
 			dout(" kicking tid %llu\n", req->r_tid);
+			list_del_init(&req->r_wait);
 			__do_request(mdsc, req);
 		}
 	}