From: Yehuda Sadeh <yehuda@hq.newdream.net>
Date: Fri, 24 Oct 2008 17:31:08 +0000 (-0700)
Subject: kclient: remove the use of snap_rwsem at ceph_mdsc_close_sessions()
X-Git-Tag: v0.5~204
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=541be968a8fe574feb254b71c63eca9f19b4b266;p=ceph.git

kclient: remove the use of snap_rwsem at ceph_mdsc_close_sessions()
---

diff --git a/src/kernel/mds_client.c b/src/kernel/mds_client.c
index 393b838fb3e1..6994053c346c 100644
--- a/src/kernel/mds_client.c
+++ b/src/kernel/mds_client.c
@@ -2061,7 +2061,6 @@ void ceph_mdsc_close_sessions(struct ceph_mds_client *mdsc)
 	spin_unlock(&mdsc->cap_delay_lock);
 
 	mutex_lock(&mdsc->mutex);
-	down_write(&mdsc->snap_rwsem);
 
 	/* close sessions, caps.
 	 *
@@ -2091,17 +2090,14 @@ void ceph_mdsc_close_sessions(struct ceph_mds_client *mdsc)
 
 		dout(10, "waiting for sessions to close\n");
 		mutex_unlock(&mdsc->mutex);
-		up_write(&mdsc->snap_rwsem);
 
 		wait_for_completion_timeout(&mdsc->session_close_waiters,
 					    timeout);
 		mutex_lock(&mdsc->mutex);
-		down_write(&mdsc->snap_rwsem);
 	}
 
 	WARN_ON(!list_empty(&mdsc->cap_delay_list));
 
-	up_write(&mdsc->snap_rwsem);
 	mutex_unlock(&mdsc->mutex);
 
 	cancel_delayed_work_sync(&mdsc->delayed_work); /* cancel timer */