From mboxrd@z Thu Jan 1 00:00:00 1970 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 C0B33C433EF for ; Tue, 12 Apr 2022 01:09:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233387AbiDLBLY (ORCPT ); Mon, 11 Apr 2022 21:11:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47488 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349288AbiDLA7h (ORCPT ); Mon, 11 Apr 2022 20:59:37 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 05F8B37BD2; Mon, 11 Apr 2022 17:52:55 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 689AC60DED; Tue, 12 Apr 2022 00:52:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9E8CC385AA; Tue, 12 Apr 2022 00:52:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1649724774; bh=t7Ek2bfIGx3XDB9l3vX26eAquej9L1q8mFbYIgiCgz8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NRtjSLaWocyKriPF2VvcHypkhIhYCRJp8AX93HIWtWl0YVoz8FHX/kXH13bBXKt/+ MLM3wWk3mjn18nK8ieMK5QNmmgF0TigP+kkUqP6djf1TJb1W8zZrWabZ86enFpEDz8 iYkfOMZrvG0pEWWj+QRL4T7fOQrF8DDk7WeVmY+XuyJgzZcd/Qsj8uVENqcbJAjG5m XWu2EpG50BVc1zGSAtMuW3camLYH7JJya9DO8dQy3xRUsDX7H08qMGSUb4HVb6m9EC iPeYJ4B8ljTNIcRD2K6lW/lDF+vWpb+o+9XaIkmhaLBkOSPdYVXzGrX5XUTGqimW9T uAnWSVIG4Dh0Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tyrel Datwyler , "Martin K . Petersen" , Sasha Levin , mikecyr@linux.ibm.com, jejb@linux.ibm.com, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 3/7] scsi: ibmvscsis: Increase INITIAL_SRP_LIMIT to 1024 Date: Mon, 11 Apr 2022 20:52:44 -0400 Message-Id: <20220412005248.351701-3-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220412005248.351701-1-sashal@kernel.org> References: <20220412005248.351701-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tyrel Datwyler [ Upstream commit 0bade8e53279157c7cc9dd95d573b7e82223d78a ] The adapter request_limit is hardcoded to be INITIAL_SRP_LIMIT which is currently an arbitrary value of 800. Increase this value to 1024 which better matches the characteristics of the typical IBMi Initiator that supports 32 LUNs and a queue depth of 32. This change also has the secondary benefit of being a power of two as required by the kfifo API. Since, Commit ab9bb6318b09 ("Partially revert "kfifo: fix kfifo_alloc() and kfifo_init()"") the size of IU pool for each target has been rounded down to 512 when attempting to kfifo_init() those pools with the current request_limit size of 800. Link: https://lore.kernel.org/r/20220322194443.678433-1-tyreld@linux.ibm.com Signed-off-by: Tyrel Datwyler Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c index 5ed28111c3c3..569b662e19e7 100644 --- a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c +++ b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c @@ -43,7 +43,7 @@ #define IBMVSCSIS_VERSION "v0.2" -#define INITIAL_SRP_LIMIT 800 +#define INITIAL_SRP_LIMIT 1024 #define DEFAULT_MAX_SECTORS 256 #define MAX_TXU 1024 * 1024 -- 2.35.1