From patchwork Wed Jun 14 10:36:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Wilck X-Patchwork-Id: 13279881 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 B4AA7C001B0 for ; Wed, 14 Jun 2023 10:36:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232060AbjFNKgi (ORCPT ); Wed, 14 Jun 2023 06:36:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46930 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234209AbjFNKgf (ORCPT ); Wed, 14 Jun 2023 06:36:35 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EE92410C2; Wed, 14 Jun 2023 03:36:34 -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 9BBD122498; Wed, 14 Jun 2023 10:36:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1686738993; 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=Md2lKFbYYlIFRimhTAFovw3H98C3UoSpAEfzkvqw8/k=; b=gmr4bTCpNaorx2O09T/kn9764S/zqqxClwrNEUc5CWBZCPLLXeBH/sUxVkWbkUmYDSqW8a mBndbWyV4bITmsVxrdIQYCQRBGSqTqkkMcBI7s3esJYcc3wu8sn2zNAhqX53k9f+UVcIyK fxywlYQAJ872M/YgJ69LT0v5gBIIeSo= 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 498DC1357F; Wed, 14 Jun 2023 10:36:33 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id SGNJEDGYiWSTfQAAMHmgww (envelope-from ); Wed, 14 Jun 2023 10:36:33 +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 , Douglas Gilbert Subject: [PATCH v7 2/7] scsi: sg: increase number of devices Date: Wed, 14 Jun 2023 12:36:11 +0200 Message-Id: <20230614103616.31857-3-mwilck@suse.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230614103616.31857-1-mwilck@suse.com> References: <20230614103616.31857-1-mwilck@suse.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Hannes Reinecke Larger setups may need to allocate more than 32k sg devices, so increase the number of devices to the full range of minor device numbers. Signed-off-by: Hannes Reinecke Signed-off-by: Martin Wilck Acked-by: Douglas Gilbert Reviewed-by: Christoph Hellwig Reviewed-by: Ming Lei Reviewed-by: Bart Van Assche --- drivers/scsi/sg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 037f8c98a6d3..6c04cf941dac 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -71,7 +71,7 @@ static int sg_proc_init(void); #define SG_ALLOW_DIO_DEF 0 -#define SG_MAX_DEVS 32768 +#define SG_MAX_DEVS (1 << MINORBITS) /* SG_MAX_CDB_SIZE should be 260 (spc4r37 section 3.1.30) however the type * of sg_io_hdr::cmd_len can only represent 255. All SCSI commands greater