[PATCH 1/4] rbd: release client list lock sooner

[Alex Elder <elder@dreamhost.com>]

In rbd_get_client(), if a client is reused, a number of things
get done while still holding the list lock unnecessarily.

This just moves a few things that need no lock protection outside
the lock.

Signed-off-by: Alex Elder <elder@dreamhost.com>
---
  drivers/block/rbd.c |   10 ++++++----
  1 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 4c5bb39..4bf8300 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -383,13 +383,15 @@ static int rbd_get_client(struct rbd_device 
*rbd_dev, const char *mon_addr,
  	spin_lock(&node_lock);
  	rbdc = __rbd_client_find(opt);
  	if (rbdc) {
-		ceph_destroy_options(opt);
-		kfree(rbd_opts);
-
  		/* using an existing client */
  		kref_get(&rbdc->kref);
-		rbd_dev->rbd_client = rbdc;
  		spin_unlock(&node_lock);
+
+		rbd_dev->rbd_client = rbdc;
+
+		ceph_destroy_options(opt);
+		kfree(rbd_opts);
+
  		return 0;
  	}
  	spin_unlock(&node_lock);
-- 
1.7.5.4