From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755555AbeAHDaz (ORCPT + 1 other); Sun, 7 Jan 2018 22:30:55 -0500 Received: from mx2.suse.de ([195.135.220.15]:55820 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755148AbeAHDax (ORCPT ); Sun, 7 Jan 2018 22:30:53 -0500 From: NeilBrown To: Oleg Drokin , James Simmons , Andreas Dilger , Greg Kroah-Hartman Date: Mon, 08 Jan 2018 14:28:13 +1100 Subject: [PATCH 14/19] staging: lustre: improve waiting in sptlrpc_req_refresh_ctx Cc: lkml , lustre Message-ID: <151538209383.23920.18027403730394945280.stgit@noble> In-Reply-To: <151538168618.23920.8261096424342988792.stgit@noble> References: <151538168618.23920.8261096424342988792.stgit@noble> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: Replace l_wait_event with wait_event_idle_timeout() and call the handler function explicitly. This makes it more clear what is happening. Signed-off-by: NeilBrown --- drivers/staging/lustre/lustre/ptlrpc/sec.c | 34 ++++++++++++++++++++-------- 1 file changed, 24 insertions(+), 10 deletions(-) diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec.c b/drivers/staging/lustre/lustre/ptlrpc/sec.c index 617e004d00f8..90e3b3022106 100644 --- a/drivers/staging/lustre/lustre/ptlrpc/sec.c +++ b/drivers/staging/lustre/lustre/ptlrpc/sec.c @@ -554,9 +554,8 @@ int ctx_check_refresh(struct ptlrpc_cli_ctx *ctx) } static -int ctx_refresh_timeout(void *data) +int ctx_refresh_timeout(struct ptlrpc_request *req) { - struct ptlrpc_request *req = data; int rc; /* conn_cnt is needed in expire_one_request */ @@ -575,10 +574,8 @@ int ctx_refresh_timeout(void *data) } static -void ctx_refresh_interrupt(void *data) +void ctx_refresh_interrupt(struct ptlrpc_request *req) { - struct ptlrpc_request *req = data; - spin_lock(&req->rq_lock); req->rq_intr = 1; spin_unlock(&req->rq_lock); @@ -611,7 +608,6 @@ int sptlrpc_req_refresh_ctx(struct ptlrpc_request *req, long timeout) { struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; struct ptlrpc_sec *sec; - struct l_wait_info lwi; int rc; LASSERT(ctx); @@ -743,10 +739,28 @@ int sptlrpc_req_refresh_ctx(struct ptlrpc_request *req, long timeout) req->rq_restart = 0; spin_unlock(&req->rq_lock); - lwi = LWI_TIMEOUT_INTR(msecs_to_jiffies(timeout * MSEC_PER_SEC), - ctx_refresh_timeout, ctx_refresh_interrupt, - req); - rc = l_wait_event(req->rq_reply_waitq, ctx_check_refresh(ctx), &lwi); + rc = wait_event_idle_timeout(req->rq_reply_waitq, + ctx_check_refresh(ctx), + timeout * HZ); + if (rc == 0 && ctx_refresh_timeout(req) == 0) { + /* Keep waiting, but enable some signals */ + rc = l_wait_event_abortable(req->rq_reply_waitq, + ctx_check_refresh(ctx)); + if (rc == 0) + rc = 1; + } + + if (rc > 0) + /* condition is true */ + rc = 0; + else if (rc == 0) + /* Timed out */ + rc = -ETIMEDOUT; + else { + /* Aborted by signal */ + rc = -EINTR; + ctx_refresh_interrupt(req); + } /* * following cases could lead us here: