From 54942c5326f039a40c407a251175cd3925ce2951 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Wed, 20 Jun 2012 21:53:53 -0500 Subject: libceph: don't change socket state on sock event (cherry picked from commit 188048bce311ee41e5178bc3255415d0eae28423) Currently the socket state change event handler records an error message on a connection to distinguish a close while connecting from a close while a connection was already established. Changing connection information during handling of a socket event is not very clean, so instead move this assignment inside con_work(), where it can be done during normal connection-level processing (and under protection of the connection mutex as well). Move the handling of a socket closed event up to the top of the processing loop in con_work(); there's no point in handling backoff etc. if we have a newly-closed socket to take care of. Signed-off-by: Alex Elder Reviewed-by: Sage Weil Signed-off-by: Greg Kroah-Hartman --- net/ceph/messenger.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'net/ceph/messenger.c') diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index edcf5eb22b4..ed922b7c05b 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -261,13 +261,8 @@ static void ceph_sock_state_change(struct sock *sk) case TCP_CLOSE_WAIT: dout("%s TCP_CLOSE_WAIT\n", __func__); con_sock_state_closing(con); - if (test_and_set_bit(SOCK_CLOSED, &con->flags) == 0) { - if (test_bit(CONNECTING, &con->state)) - con->error_msg = "connection failed"; - else - con->error_msg = "socket closed"; + if (!test_and_set_bit(SOCK_CLOSED, &con->flags)) queue_con(con); - } break; case TCP_ESTABLISHED: dout("%s TCP_ESTABLISHED\n", __func__); @@ -2187,6 +2182,14 @@ static void con_work(struct work_struct *work) mutex_lock(&con->mutex); restart: + if (test_and_clear_bit(SOCK_CLOSED, &con->flags)) { + if (test_bit(CONNECTING, &con->state)) + con->error_msg = "connection failed"; + else + con->error_msg = "socket closed"; + goto fault; + } + if (test_and_clear_bit(BACKOFF, &con->flags)) { dout("con_work %p backing off\n", con); if (queue_delayed_work(ceph_msgr_wq, &con->work, @@ -2216,9 +2219,6 @@ restart: con_close_socket(con); } - if (test_and_clear_bit(SOCK_CLOSED, &con->flags)) - goto fault; - ret = try_read(con); if (ret == -EAGAIN) goto restart; -- cgit v1.2.3