SUNRPC: another pmap wakeup fix
Don't wake up bind waiters if a task finds that another task is already trying to bind. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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1 changed files with 6 additions and 5 deletions
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@ -101,14 +101,14 @@ void rpc_getport(struct rpc_task *task)
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/* Autobind on cloned rpc clients is discouraged */
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BUG_ON(clnt->cl_parent != clnt);
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status = -EACCES; /* tell caller to check again */
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if (xprt_test_and_set_binding(xprt))
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goto bailout_nowake;
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/* Put self on queue before sending rpcbind request, in case
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* pmap_getport_done completes before we return from rpc_run_task */
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rpc_sleep_on(&xprt->binding, task, NULL, NULL);
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status = -EACCES; /* tell caller to check again */
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if (xprt_test_and_set_binding(xprt))
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goto bailout_nofree;
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/* Someone else may have bound if we slept */
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status = 0;
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if (xprt_bound(xprt))
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@ -143,8 +143,9 @@ bailout:
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pmap_map_free(map);
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xprt_put(xprt);
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bailout_nofree:
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task->tk_status = status;
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pmap_wake_portmap_waiters(xprt, status);
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bailout_nowake:
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task->tk_status = status;
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}
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#ifdef CONFIG_ROOT_NFS
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