From patchwork Tue Jan 12 15:40:46 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 8018701 Return-Path: X-Original-To: patchwork-linux-scsi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 93B539F6FA for ; Tue, 12 Jan 2016 15:41:16 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A9F47203E1 for ; Tue, 12 Jan 2016 15:41:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B5F77203DC for ; Tue, 12 Jan 2016 15:41:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762888AbcALPlJ (ORCPT ); Tue, 12 Jan 2016 10:41:09 -0500 Received: from mx2.suse.de ([195.135.220.15]:38671 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762785AbcALPlF (ORCPT ); Tue, 12 Jan 2016 10:41:05 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id B4B41AD7D; Tue, 12 Jan 2016 15:40:59 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: James Bottomley , Christoph Hellwig , Bart von Assche , Ewan Milne , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCHv2 10/22] revert commit a8e5a2d593cb ("[SCSI] scsi_dh_alua: ALUA handler attach should succeed while TPG is transitioning") Date: Tue, 12 Jan 2016 16:40:46 +0100 Message-Id: <1452613258-94084-11-git-send-email-hare@suse.de> X-Mailer: git-send-email 1.8.5.6 In-Reply-To: <1452613258-94084-1-git-send-email-hare@suse.de> References: <1452613258-94084-1-git-send-email-hare@suse.de> Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This reverts commit a8e5a2d593cbfccf530c3382c2c328d2edaa7b66 Obsoleted by the next patch. Reviewed-by: Christoph Hellwig Reviewed-by: Ewan Milne Signed-off-by: Hannes Reinecke --- drivers/scsi/device_handler/scsi_dh_alua.c | 31 ++++++++++++------------------ 1 file changed, 12 insertions(+), 19 deletions(-) diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c index c4ee225..2762aba 100644 --- a/drivers/scsi/device_handler/scsi_dh_alua.c +++ b/drivers/scsi/device_handler/scsi_dh_alua.c @@ -92,7 +92,7 @@ struct alua_dh_data { #define ALUA_POLICY_SWITCH_CURRENT 0 #define ALUA_POLICY_SWITCH_ALL 1 -static int alua_rtpg(struct scsi_device *, struct alua_port_group *, int); +static int alua_rtpg(struct scsi_device *, struct alua_port_group *); static char print_alua_state(int); static void release_port_group(struct kref *kref) @@ -324,7 +324,7 @@ static int alua_check_vpd(struct scsi_device *sdev, struct alua_dh_data *h, ALUA_DH_NAME, h->pg->device_id_str, h->group_id, h->rel_port); - return alua_rtpg(sdev, h->pg, 0); + return alua_rtpg(sdev, h->pg); } static char print_alua_state(int state) @@ -407,13 +407,12 @@ static int alua_check_sense(struct scsi_device *sdev, /* * alua_rtpg - Evaluate REPORT TARGET GROUP STATES * @sdev: the device to be evaluated. - * @wait_for_transition: if nonzero, wait ALUA_FAILOVER_TIMEOUT seconds for device to exit transitioning state * * Evaluate the Target Port Group State. * Returns SCSI_DH_DEV_OFFLINED if the path is * found to be unusable. */ -static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg, int wait_for_transition) +static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg) { struct scsi_sense_hdr sense_hdr; int len, k, off, valid_states = 0, bufflen = ALUA_RTPG_SIZE; @@ -504,8 +503,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg, int w else pg->transition_tmo = ALUA_FAILOVER_TIMEOUT; - if (wait_for_transition && - (orig_transition_tmo != pg->transition_tmo)) { + if (orig_transition_tmo != pg->transition_tmo) { sdev_printk(KERN_INFO, sdev, "%s: transition timeout set to %d seconds\n", ALUA_DH_NAME, pg->transition_tmo); @@ -543,19 +541,14 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg, int w switch (pg->state) { case TPGS_STATE_TRANSITIONING: - if (wait_for_transition) { - if (time_before(jiffies, expiry)) { - /* State transition, retry */ - interval += 2000; - msleep(interval); - goto retry; - } - err = SCSI_DH_RETRY; - } else { - err = SCSI_DH_OK; + if (time_before(jiffies, expiry)) { + /* State transition, retry */ + interval += 2000; + msleep(interval); + goto retry; } - /* Transitioning time exceeded, set port to standby */ + err = SCSI_DH_RETRY; pg->state = TPGS_STATE_STANDBY; break; case TPGS_STATE_OFFLINE: @@ -715,14 +708,14 @@ static int alua_activate(struct scsi_device *sdev, if (optimize_stpg) h->pg->flags |= ALUA_OPTIMIZE_STPG; - err = alua_rtpg(sdev, h->pg, 1); + err = alua_rtpg(sdev, h->pg); if (err != SCSI_DH_OK) { kref_put(&h->pg->kref, release_port_group); goto out; } err = alua_stpg(sdev, h->pg); if (err == SCSI_DH_RETRY) - err = alua_rtpg(sdev, h->pg, 1); + err = alua_rtpg(sdev, h->pg); kref_put(&h->pg->kref, release_port_group); out: if (fn)