From: Alex Elder Date: Wed, 16 May 2012 20:16:38 +0000 (-0500) Subject: ceph: don't set WRITE_PENDING too early X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=e10c758e4031a801ea4d2f8fb39bf14c2658d74b;p=openwrt%2Fstaging%2Fblogic.git ceph: don't set WRITE_PENDING too early prepare_write_connect() prepares a connect message, then sets WRITE_PENDING on the connection. Then *after* this, it calls prepare_connect_authorizer(), which updates the content of the connection buffer already queued for sending. It's also possible it will result in prepare_write_connect() returning -EAGAIN despite the WRITE_PENDING big getting set. Fix this by preparing the connect authorizer first, setting the WRITE_PENDING bit only after that is done. Partially addresses http://tracker.newdream.net/issues/2424 Signed-off-by: Alex Elder Reviewed-by: Sage Weil --- diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index 47499dc0e413..cf292939dd1e 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -697,6 +697,7 @@ static int prepare_write_connect(struct ceph_connection *con) { unsigned global_seq = get_global_seq(con->msgr, 0); int proto; + int ret; switch (con->peer_name.type) { case CEPH_ENTITY_TYPE_MON: @@ -723,11 +724,14 @@ static int prepare_write_connect(struct ceph_connection *con) con->out_connect.flags = 0; ceph_con_out_kvec_add(con, sizeof (con->out_connect), &con->out_connect); + ret = prepare_connect_authorizer(con); + if (ret) + return ret; con->out_more = 0; set_bit(WRITE_PENDING, &con->state); - return prepare_connect_authorizer(con); + return 0; } /*