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 6D410C433EF for ; Tue, 12 Apr 2022 01:11:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344484AbiDLBM3 (ORCPT ); Mon, 11 Apr 2022 21:12:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34294 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348293AbiDLA7R (ORCPT ); Mon, 11 Apr 2022 20:59:17 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BAC5E377C3; Mon, 11 Apr 2022 17:52:32 -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 ams.source.kernel.org (Postfix) with ESMTPS id 3B404B815C8; Tue, 12 Apr 2022 00:52:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0F62AC385A9; Tue, 12 Apr 2022 00:52:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1649724751; bh=CE8uiITvTHHnwzEeKk6MBoEMlDrcSfssjlvn4KcXDDs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=j1yA3anDWdBSayw4VI5BoZE6Tumuaxg/zKxMpePx44k2IoclWj4q8G9djhvQSyx8J iJo+5ei2cH353NhcdSUUmX0F0KsqttAucZp9ImFQpiUvIZQa7CRV6+pyZaHP4cEXF7 ZxI7BIi/K+cCEhURWoFrCouRU38crX7p8ZWxVpEk3iLpxXcy4tJRNPQjBODGhyOxYA 6sXXiIW3OmfbG/KnUM/ly/iZKwIqkD5oZJkJutzS7qGY748OuFbqzcx1rTgxU+/WcP xAFjbH0wcRskSrgvZkvUmznGNNMglPq917T6e+cAIExO4R6SBbJrfahHdyYMLNYplP 5LP3vozL6aWAg== 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 4.14 05/11] scsi: ibmvscsis: Increase INITIAL_SRP_LIMIT to 1024 Date: Mon, 11 Apr 2022 20:52:14 -0400 Message-Id: <20220412005222.351554-5-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220412005222.351554-1-sashal@kernel.org> References: <20220412005222.351554-1-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 25d2741cdf96..b97140661119 100644 --- a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c +++ b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c @@ -44,7 +44,7 @@ #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