netdev - [PATCH net-next 1/5] rxrpc: Remove RXRPC_CALL_PROC

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Date:   Tue, 23 Aug 2016 16:26:25 +0100
From:   David Howells <dhowells@...hat.com>
To:     netdev@...r.kernel.org
Cc:     dhowells@...hat.com, linux-afs@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH net-next 1/5] rxrpc: Remove RXRPC_CALL_PROC_BUSY

Remove RXRPC_CALL_PROC_BUSY as work queue items are now 100% non-reentrant.

Signed-off-by: David Howells <dhowells@...hat.com>
---

 net/rxrpc/ar-internal.h |    1 -
 net/rxrpc/call_event.c  |    6 ------
 2 files changed, 7 deletions(-)

diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index ff83fb1ddd47..3a2f4c214811 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -341,7 +341,6 @@ enum rxrpc_call_flag {
 	RXRPC_CALL_RCVD_LAST,		/* all packets received */
 	RXRPC_CALL_RUN_RTIMER,		/* Tx resend timer started */
 	RXRPC_CALL_TX_SOFT_ACK,		/* sent some soft ACKs */
-	RXRPC_CALL_PROC_BUSY,		/* the processor is busy */
 	RXRPC_CALL_INIT_ACCEPT,		/* acceptance was initiated */
 	RXRPC_CALL_HAS_USERID,		/* has a user ID attached */
 	RXRPC_CALL_EXPECT_OOS,		/* expect out of sequence packets */
diff --git a/net/rxrpc/call_event.c b/net/rxrpc/call_event.c
index e60cf65c2232..eaa8035dcb71 100644
--- a/net/rxrpc/call_event.c
+++ b/net/rxrpc/call_event.c
@@ -832,11 +832,6 @@ void rxrpc_process_call(struct work_struct *work)
 	       call->debug_id, rxrpc_call_states[call->state], call->events,
 	       (jiffies - call->creation_jif) / (HZ / 10));
 
-	if (test_and_set_bit(RXRPC_CALL_PROC_BUSY, &call->flags)) {
-		_debug("XXXXXXXXXXXXX RUNNING ON MULTIPLE CPUS XXXXXXXXXXXXX");
-		return;
-	}
-
 	if (!call->conn)
 		goto skip_msg_init;
 
@@ -1281,7 +1276,6 @@ maybe_reschedule:
 	}
 
 error:
-	clear_bit(RXRPC_CALL_PROC_BUSY, &call->flags);
 	kfree(acks);
 
 	/* because we don't want two CPUs both processing the work item for one