From: Mikhail Pershin <mike.pershin@xxxxxxxxx> Initialize request session early to make it available in high-priority handlers Signed-off-by: Mikhail Pershin <mike.pershin@xxxxxxxxx> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3467 Reviewed-on: http://review.whamcloud.com/7350 Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@xxxxxxxxx> Reviewed-by: Fan Yong <fan.yong@xxxxxxxxx> Reviewed-by: Andreas Dilger <andreas.dilger@xxxxxxxxx> Signed-off-by: James Simmons <jsimmons@xxxxxxxxxxxxx> --- drivers/staging/lustre/lustre/ptlrpc/service.c | 53 +++++++++++++++----------- 1 file changed, 31 insertions(+), 22 deletions(-) diff --git a/drivers/staging/lustre/lustre/ptlrpc/service.c b/drivers/staging/lustre/lustre/ptlrpc/service.c index fc2632f..17c7b97 100644 --- a/drivers/staging/lustre/lustre/ptlrpc/service.c +++ b/drivers/staging/lustre/lustre/ptlrpc/service.c @@ -838,6 +838,11 @@ static void ptlrpc_server_finish_request(struct ptlrpc_service_part *svcpt, { ptlrpc_server_hpreq_fini(req); + if (req->rq_session.lc_thread) { + lu_context_exit(&req->rq_session); + lu_context_fini(&req->rq_session); + } + ptlrpc_server_drop_request(req); } @@ -1579,6 +1584,21 @@ ptlrpc_server_handle_req_in(struct ptlrpc_service_part *svcpt, } req->rq_svc_thread = thread; + if (thread) { + /* initialize request session, it is needed for request + * processing by target + */ + rc = lu_context_init(&req->rq_session, + LCT_SERVER_SESSION | LCT_NOREF); + if (rc) { + CERROR("%s: failure to initialize session: rc = %d\n", + thread->t_name, rc); + goto err_req; + } + req->rq_session.lc_thread = thread; + lu_context_enter(&req->rq_session); + req->rq_svc_thread->t_env->le_ses = &req->rq_session; + } ptlrpc_at_add_timed(req); @@ -1612,7 +1632,6 @@ ptlrpc_server_handle_request(struct ptlrpc_service_part *svcpt, struct timespec64 arrived; unsigned long timediff_usecs; unsigned long arrived_usecs; - int rc; int fail_opc = 0; request = ptlrpc_server_request_get(svcpt, false); @@ -1649,22 +1668,6 @@ ptlrpc_server_handle_request(struct ptlrpc_service_part *svcpt, at_get(&svcpt->scp_at_estimate)); } - rc = lu_context_init(&request->rq_session, LCT_SERVER_SESSION | - LCT_NOREF); - if (rc) { - CERROR("Failure to initialize session: %d\n", rc); - goto out_req; - } - request->rq_session.lc_thread = thread; - request->rq_session.lc_cookie = 0x5; - lu_context_enter(&request->rq_session); - - CDEBUG(D_NET, "got req %llu\n", request->rq_xid); - - request->rq_svc_thread = thread; - if (thread) - request->rq_svc_thread->t_env->le_ses = &request->rq_session; - if (likely(request->rq_export)) { if (unlikely(ptlrpc_check_req(request))) goto put_conn; @@ -1696,14 +1699,21 @@ ptlrpc_server_handle_request(struct ptlrpc_service_part *svcpt, if (lustre_msg_get_opc(request->rq_reqmsg) != OBD_PING) CFS_FAIL_TIMEOUT_MS(OBD_FAIL_PTLRPC_PAUSE_REQ, cfs_fail_val); - rc = svc->srv_ops.so_req_handler(request); + CDEBUG(D_NET, "got req %llu\n", request->rq_xid); + + /* re-assign request and sesson thread to the current one */ + request->rq_svc_thread = thread; + if (thread) { + LASSERT(request->rq_session.lc_thread); + request->rq_session.lc_thread = thread; + request->rq_session.lc_cookie = 0x55; + thread->t_env->le_ses = &request->rq_session; + } + svc->srv_ops.so_req_handler(request); ptlrpc_rqphase_move(request, RQ_PHASE_COMPLETE); put_conn: - lu_context_exit(&request->rq_session); - lu_context_fini(&request->rq_session); - if (unlikely(ktime_get_real_seconds() > request->rq_deadline)) { DEBUG_REQ(D_WARNING, request, "Request took longer than estimated (%lld:%llds); " @@ -1757,7 +1767,6 @@ put_conn: request->rq_arrival_time.tv_sec); } -out_req: ptlrpc_server_finish_active_request(svcpt, request); return 1; -- 2.7.4 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
