SUNRPC: Add a per-rpc_clnt spinlock

Use that to protect the rpc_clnt->cl_tasks list instead of using a global
lock.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 0801ab5407ce..2f4b520a7419 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -28,6 +28,7 @@ struct rpc_clnt {
         atomic_t                cl_users;       /* number of references */
         struct list_head        cl_clients;     /* Global list of clients */
         struct list_head        cl_tasks;       /* List of tasks */
+        spinlock_t              cl_lock;        /* spinlock */
         struct rpc_xprt *       cl_xprt;        /* transport */
         struct rpc_procinfo *   cl_procinfo;    /* procedure info */
         u32                     cl_prog,        /* RPC program number */