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authorAlex Elder <elder@inktank.com>2012-06-20 21:53:53 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-11-26 11:38:27 -0800
commit54942c5326f039a40c407a251175cd3925ce2951 (patch)
tree18d7ff6bda683e39ce7d6a468c7c6753deb116a1 /net/ceph/messenger.c
parenteb8c5642db57af9577ebfea7ff9e96eadbf596b8 (diff)
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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 <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/ceph/messenger.c')
-rw-r--r--net/ceph/messenger.c18
1 files changed, 9 insertions, 9 deletions
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;