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Commit 3ff3600e authored by J. Bruce Fields's avatar J. Bruce Fields
Browse files

nfsd4: simplify nfsd4_cb_prepare 



Remove handling for a nonexistant case (status && !-EAGAIN).

Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent 14a24e99

fs/nfsd/nfs4callback.c

+4 −22
Original line number Diff line number Diff line
@@ -613,24 +613,14 @@ void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *conn) 
 * If the slot is available, then mark it busy.  Otherwise, set the

 * thread for sleeping on the callback RPC wait queue.

 */

static int nfsd41_cb_setup_sequence(struct nfs4_client *clp,

		struct rpc_task *task)

static bool nfsd41_cb_get_slot(struct nfs4_client *clp, struct rpc_task *task)

{

	u32 *ptr = (u32 *)clp->cl_cb_session->se_sessionid.data;

	int status = 0;



	dprintk("%s: %u:%u:%u:%u\n", __func__,

		ptr[0], ptr[1], ptr[2], ptr[3]);



	if (test_and_set_bit(0, &clp->cl_cb_slot_busy) != 0) {

		rpc_sleep_on(&clp->cl_cb_waitq, task, NULL);

		dprintk("%s slot is busy\n", __func__);

		status = -EAGAIN;

		goto out;

		return false;

	}

out:

	dprintk("%s status=%d\n", __func__, status);

	return status;

	return true;

}



/*
@@ -643,20 +633,12 @@ static void nfsd4_cb_prepare(struct rpc_task *task, void *calldata) 
	struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall);

	struct nfs4_client *clp = dp->dl_client;

	u32 minorversion = clp->cl_minorversion;

	int status = 0;



	cb->cb_minorversion = minorversion;

	if (minorversion) {

		status = nfsd41_cb_setup_sequence(clp, task);

		if (status) {

			if (status != -EAGAIN) {

				/* terminate rpc task */

				task->tk_status = status;

				task->tk_action = NULL;

			}

		if (!nfsd41_cb_get_slot(clp, task))

			return;

	}

	}

	rpc_call_start(task);

}