rpc: add a new priority in RPC task
Alexandros Batsakis [Tue, 15 Dec 2009 05:27:55 +0000 (21:27 -0800)]
Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

include/linux/sunrpc/sched.h

index 9157405..7bc7fd5 100644 (file)
@@ -173,7 +173,8 @@ struct rpc_task_setup {
 #define RPC_PRIORITY_LOW       (-1)
 #define RPC_PRIORITY_NORMAL    (0)
 #define RPC_PRIORITY_HIGH      (1)
-#define RPC_NR_PRIORITY                (1 + RPC_PRIORITY_HIGH - RPC_PRIORITY_LOW)
+#define RPC_PRIORITY_PRIVILEGED        (2)
+#define RPC_NR_PRIORITY                (1 + RPC_PRIORITY_PRIVILEGED - RPC_PRIORITY_LOW)
 
 struct rpc_timer {
        struct timer_list timer;
@@ -255,6 +256,16 @@ static inline int rpc_wait_for_completion_task(struct rpc_task *task)
        return __rpc_wait_for_completion_task(task, NULL);
 }
 
+static inline void rpc_task_set_priority(struct rpc_task *task, unsigned char prio)
+{
+       task->tk_priority = prio - RPC_PRIORITY_LOW;
+}
+
+static inline int rpc_task_has_priority(struct rpc_task *task, unsigned char prio)
+{
+       return (task->tk_priority + RPC_PRIORITY_LOW == prio);
+}
+
 #ifdef RPC_DEBUG
 static inline const char * rpc_qname(struct rpc_wait_queue *q)
 {