From patchwork Wed Jun 7 18:22:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Wilck X-Patchwork-Id: 13271118 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 91B4BC7EE23 for ; Wed, 7 Jun 2023 18:24:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229651AbjFGSYL (ORCPT ); Wed, 7 Jun 2023 14:24:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37984 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229789AbjFGSXr (ORCPT ); Wed, 7 Jun 2023 14:23:47 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 314E62711; Wed, 7 Jun 2023 11:23:22 -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-out1.suse.de (Postfix) with ESMTPS id 0E6CD21A1E; Wed, 7 Jun 2023 18:23:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1686162198; 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: in-reply-to:in-reply-to:references:references; bh=gcWJ/FMqmwc6clgHxsDNCZDPW0c5pmCkA5iwQiwV4Gc=; b=AX65f+3u4vUcDLJUTGCGeL84uf9W4yip8/BT2RzeMcvJ9tp0yncwk7ItUwFeO9RaIHAop0 jRU6yWeUAIS6mWfcRV79RgAFqJ21naF2m9bJSxZe0CMNwRYh34R9Gh72WN3psBG3dw7yGI n1DasKknx2GwQ172loBgCz406Vqz7cI= 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 6D49F1346D; Wed, 7 Jun 2023 18:23:17 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id oPwKFxXLgGRzBQAAMHmgww (envelope-from ); Wed, 07 Jun 2023 18:23:17 +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 v3 4/8] scsi: call scsi_stop_queue() without state_mutex held Date: Wed, 7 Jun 2023 20:22:45 +0200 Message-Id: <20230607182249.22623-5-mwilck@suse.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230607182249.22623-1-mwilck@suse.com> References: <20230607182249.22623-1-mwilck@suse.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Martin Wilck sdev->state_mutex protects only sdev->sdev_state. There's no reason to keep it held while calling scsi_stop_queue(). Signed-off-by: Martin Wilck --- drivers/scsi/scsi_lib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index ce5788643011..26e7ce25fa05 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -2795,9 +2795,9 @@ static void scsi_device_block(struct scsi_device *sdev, void *data) mutex_lock(&sdev->state_mutex); err = __scsi_internal_device_block_nowait(sdev); + mutex_unlock(&sdev->state_mutex); if (err == 0) scsi_stop_queue(sdev, false); - mutex_unlock(&sdev->state_mutex); WARN_ONCE(err, "__scsi_internal_device_block_nowait(%s) failed: err = %d\n", dev_name(&sdev->sdev_gendev), err);