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Commit 01da24d3 authored by Bob Peterson's avatar Bob Peterson Committed by David Teigland
Browse files

DLM: Eliminate CF_WRITE_PENDING flag 



Signed-off-by: default avatarBob Peterson <rpeterso@redhat.com>
Reviewed-by: default avatarTadashi Miyauchi <miyauchi@toshiba-tops.co.jp>
Signed-off-by: default avatarDavid Teigland <teigland@redhat.com>
parent 61d9102b

fs/dlm/lowcomms.c

+8 −13
Original line number Diff line number Diff line
@@ -106,7 +106,6 @@ struct connection { 
	struct mutex sock_mutex;

	unsigned long flags;

#define CF_READ_PENDING 1

#define CF_WRITE_PENDING 2

#define CF_INIT_PENDING 4

#define CF_IS_OTHERCON 5

#define CF_CLOSE 6
@@ -426,7 +425,6 @@ static void lowcomms_write_space(struct sock *sk) 
		clear_bit(SOCKWQ_ASYNC_NOSPACE, &con->sock->flags);

	}



	if (!test_and_set_bit(CF_WRITE_PENDING, &con->flags))

	queue_work(send_workqueue, &con->swork);

}
@@ -578,7 +576,6 @@ static void make_sockaddr(struct sockaddr_storage *saddr, uint16_t port, 
static void close_connection(struct connection *con, bool and_other,

			     bool tx, bool rx)

{

	clear_bit(CF_WRITE_PENDING, &con->flags);

	if (tx && cancel_work_sync(&con->swork))

		log_print("canceled swork for node %d", con->nodeid);

	if (rx && cancel_work_sync(&con->rwork))
@@ -1077,7 +1074,6 @@ static void sctp_connect_to_sock(struct connection *con) 
	if (result == 0)

		goto out;





bind_err:

	con->sock = NULL;

	sock_release(sock);
@@ -1102,7 +1098,6 @@ static void sctp_connect_to_sock(struct connection *con) 


out:

	mutex_unlock(&con->sock_mutex);

	set_bit(CF_WRITE_PENDING, &con->flags);

}



/* Connect a new socket to its peer */
@@ -1196,7 +1191,6 @@ static void tcp_connect_to_sock(struct connection *con) 
	}

out:

	mutex_unlock(&con->sock_mutex);

	set_bit(CF_WRITE_PENDING, &con->flags);

	return;

}
@@ -1452,9 +1446,7 @@ void dlm_lowcomms_commit_buffer(void *mh) 
	e->len = e->end - e->offset;

	spin_unlock(&con->writequeue_lock);



	if (!test_and_set_bit(CF_WRITE_PENDING, &con->flags)) {

	queue_work(send_workqueue, &con->swork);

	}

	return;



out:
@@ -1524,12 +1516,15 @@ static void send_to_sock(struct connection *con) 
send_error:

	mutex_unlock(&con->sock_mutex);

	close_connection(con, false, false, true);

	lowcomms_connect_sock(con);

	/* Requeue the send work. When the work daemon runs again, it will try

	   a new connection, then call this function again. */

	queue_work(send_workqueue, &con->swork);

	return;



out_connect:

	mutex_unlock(&con->sock_mutex);

	lowcomms_connect_sock(con);

	queue_work(send_workqueue, &con->swork);

	cond_resched();

}



static void clean_one_writequeue(struct connection *con)
@@ -1591,7 +1586,7 @@ static void process_send_sockets(struct work_struct *work) 


	if (con->sock == NULL) /* not mutex protected so check it inside too */

		con->connect_action(con);

	if (test_and_clear_bit(CF_WRITE_PENDING, &con->flags))

	if (!list_empty(&con->writequeue))

		send_to_sock(con);

}