From patchwork Mon Jun 12 15:03:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Wilck X-Patchwork-Id: 692525 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id ABD07C88CB4 for ; Mon, 12 Jun 2023 15:03:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239179AbjFLPDk (ORCPT ); Mon, 12 Jun 2023 11:03:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36630 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239175AbjFLPDX (ORCPT ); Mon, 12 Jun 2023 11:03:23 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AF6E0CC; Mon, 12 Jun 2023 08:03:21 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 652E61FDAA; Mon, 12 Jun 2023 15:03:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1686582200; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=4RRLF67QU9Cka1JulfEZOYPSL3pjhbA85Tmqle8Ma9k=; b=r/ahxzOTTp91xlft6REYlge957cZ1laMQsCwBCxtLEhdHMZREnY1OuJVw7u61vFOJZXH6D Eddj/UHlk6XCBb5nCamdUspU5i2M3CRrTeN0Gis+zYLyjDGsdDfFwfCH8beWvTCZuc+Ymy nqvND375Nsq2hIOEN1s8xKaA5BziXAQ= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 03BE6138EC; Mon, 12 Jun 2023 15:03:19 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id XGmuObczh2RMMAAAMHmgww (envelope-from ); Mon, 12 Jun 2023 15:03:19 +0000 From: mwilck@suse.com To: "Martin K. Petersen" , Christoph Hellwig , Ming Lei , Bart Van Assche Cc: James Bottomley , linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, Hannes Reinecke , Martin Wilck Subject: [PATCH v4 0/6] scsi: fixes for targets with many LUNs, and scsi_target_block rework Date: Mon, 12 Jun 2023 17:03:03 +0200 Message-Id: <20230612150309.18103-1-mwilck@suse.com> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Martin Wilck This patch series addresses some issues we saw in a test setup with a large number of SCSI LUNs. The first two patches simply increase the number of available sg and bsg devices. 3-5 fix a large delay we encountered between blocking a Fibre Channel remote port and the dev_loss_tmo. 6 renames scsi_target_block() to scsi_block_targets(), and makes additional changes to this API, as suggested in the review of the v2 series. Changes v3 -> v4: - skipped 4/8: keep state_mutex held while quiescing queue (Bart van Assche), added a comment in 4/6 to explain the rationale - renamed scsi_target_block() to scsi_block_targets() (Christoph Hellwig), and merged the previous patches 7/8 and 8/8 modifying this API into 6/6. - rebased to latest mkp/queue branch Changes v2 -> v3: - Split previous 3/3 into 4 separate patches as suggested by Christoph Hellwig. - Added 7/8 and 8/8, as suggested by Christoph and Bart van Assche. - Added s-o-b and reviewed-by tags. Changes v1 -> v2: - call blk_mq_wait_quiesce_done() from scsi_target_block() to cover the case where BLK_MQ_F_BLOCKING is set (Bart van Assche) Hannes Reinecke (2): bsg: increase number of devices scsi: sg: increase number of devices Martin Wilck (4): scsi: merge scsi_internal_device_block() and device_block() scsi: don't wait for quiesce in scsi_stop_queue() scsi: don't wait for quiesce in scsi_device_block() scsi: replace scsi_target_block() by scsi_block_targets() block/bsg.c | 2 +- drivers/scsi/scsi_lib.c | 76 ++++++++++++++--------------- drivers/scsi/scsi_transport_fc.c | 2 +- drivers/scsi/scsi_transport_iscsi.c | 3 +- drivers/scsi/scsi_transport_srp.c | 6 +-- drivers/scsi/sg.c | 2 +- drivers/scsi/snic/snic_disc.c | 2 +- include/scsi/scsi_device.h | 2 +- 8 files changed, 46 insertions(+), 49 deletions(-)