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SUNRPC: Add a new helper rpc_wake_up_queued_task()

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In all cases where we currently use rpc_wake_up_task(), we almost always
know on which waitqueue the rpc_task is actually sleeping. This will allows
us to simplify the queue locking in a future patch.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2008-02-22 15:46:41 -05:00
parent fde95c7554
commit 96ef13b283
3 changed files with 34 additions and 36 deletions
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4
include/linux/sunrpc/sched.h
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@ -33,7 +33,6 @@ struct rpc_wait_queue;
struct rpc_wait {
struct list_head list; /* wait queue links */
struct list_head links; /* Links to related tasks */
struct rpc_wait_queue * rpc_waitq; /* RPC wait queue we're on */
};
/*
@ -80,6 +79,7 @@ struct rpc_task {
struct workqueue_struct *tk_workqueue; /* Normally rpciod, but could
* be any workqueue
*/
struct rpc_wait_queue *tk_waitqueue; /* RPC wait queue we're on */
union {
struct work_struct tk_work; /* Async task work queue */
struct rpc_wait tk_wait; /* RPC wait */
@ -233,6 +233,8 @@ void rpc_init_wait_queue(struct rpc_wait_queue *, const char *);
void rpc_sleep_on(struct rpc_wait_queue *, struct rpc_task *,
rpc_action action, rpc_action timer);
void rpc_wake_up_task(struct rpc_task *);
void rpc_wake_up_queued_task(struct rpc_wait_queue *,
struct rpc_task *);
void rpc_wake_up(struct rpc_wait_queue *);
struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *);
void rpc_wake_up_status(struct rpc_wait_queue *, int);