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sunrpc: clarify comments on rpc_make_runnable

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rpc_make_runnable is not generally called with the queue lock held, unless
it's waking up a task that has been sitting on a waitqueue. This is safe
when the task has not entered the FSM yet, but the comments don't really
spell this out.

Signed-off-by: Jeff Layton <[email protected]>
Signed-off-by: Trond Myklebust <[email protected]>
This commit is contained in:
Jeff Layton 2012-07-23 15:51:55 -04:00 • committed by Trond Myklebust
commit 506026c3ec
1 changed files with 3 additions and 2 deletions
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5
net/sunrpc/sched.c
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@ -300,8 +300,9 @@ EXPORT_SYMBOL_GPL(__rpc_wait_for_completion_task);
/*
* Make an RPC task runnable.
*
* Note: If the task is ASYNC, this must be called with
* the spinlock held to protect the wait queue operation.
* Note: If the task is ASYNC, and is being made runnable after sitting on an
* rpc_wait_queue, this must be called with the queue spinlock held to protect
* the wait queue operation.
*/
static void rpc_make_runnable(struct rpc_task *task)
{