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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D195FC4CED1 for ; Thu, 3 Oct 2019 16:05:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9BBA1222BE for ; Thu, 3 Oct 2019 16:05:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570118725; bh=lTc6DFAiAPGMPxNE/on0ezBOoV5GI9L/+6b0widIlG0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=OSqoXH4NRFOTUZF0XOfKqUxBY0kLrZJXDwjCgb9Tf6qMjjy5t64X9Cx9sE3saPwTE LEGw2tO/72eH8ZyKRwsc2P13MVeWLRpMiAuoE8JGhoT9zkDezjG3C4uAlNQ98E6C+V nPVaI+ChRuiMm4Y2R389qfFVPbOfFmqBfuwC79kM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730767AbfJCQFZ (ORCPT ); Thu, 3 Oct 2019 12:05:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:52042 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729193AbfJCQFY (ORCPT ); Thu, 3 Oct 2019 12:05:24 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 75215215EA; Thu, 3 Oct 2019 16:05:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570118724; bh=lTc6DFAiAPGMPxNE/on0ezBOoV5GI9L/+6b0widIlG0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Y+gP5jZDPnbFmMJv4Gpu9nS1z6a+vkObcGrNUYJMeX6xAnWY/x7xt5Y4Div/8u8E4 gYOXnUZrW6geQ1tArC0QniVgX/gBcDm1SB9VRciWY3NKqqVQbfc3F+tXCuPlrXGIbk iu+Wz5zZ2bSLuC8RkaUB6nbLCQKqXEYdPS8ucGRo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tom Wu , Israel Rukshin , Max Gurtovoy , Chaitanya Kulkarni , Christoph Hellwig , Sagi Grimberg , Sasha Levin Subject: [PATCH 4.9 077/129] nvmet: fix data units read and written counters in SMART log Date: Thu, 3 Oct 2019 17:53:20 +0200 Message-Id: <20191003154353.906756915@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191003154318.081116689@linuxfoundation.org> References: <20191003154318.081116689@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Tom Wu [ Upstream commit 3bec2e3754becebd4c452999adb49bc62c575ea4 ] In nvme spec 1.3 there is a definition for data write/read counters from SMART log, (See section 5.14.1.2): This value is reported in thousands (i.e., a value of 1 corresponds to 1000 units of 512 bytes read) and is rounded up. However, in nvme target where value is reported with actual units, but not thousands of units as the spec requires. Signed-off-by: Tom Wu Reviewed-by: Israel Rukshin Reviewed-by: Max Gurtovoy Reviewed-by: Chaitanya Kulkarni Reviewed-by: Christoph Hellwig Signed-off-by: Sagi Grimberg Signed-off-by: Sasha Levin --- drivers/nvme/target/admin-cmd.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c index cdb7752dcbb79..446f61ba018d7 100644 --- a/drivers/nvme/target/admin-cmd.c +++ b/drivers/nvme/target/admin-cmd.c @@ -47,9 +47,11 @@ static u16 nvmet_get_smart_log_nsid(struct nvmet_req *req, } host_reads = part_stat_read(ns->bdev->bd_part, ios[READ]); - data_units_read = part_stat_read(ns->bdev->bd_part, sectors[READ]); + data_units_read = DIV_ROUND_UP(part_stat_read(ns->bdev->bd_part, + sectors[READ]), 1000); host_writes = part_stat_read(ns->bdev->bd_part, ios[WRITE]); - data_units_written = part_stat_read(ns->bdev->bd_part, sectors[WRITE]); + data_units_written = DIV_ROUND_UP(part_stat_read(ns->bdev->bd_part, + sectors[WRITE]), 1000); put_unaligned_le64(host_reads, &slog->host_reads[0]); put_unaligned_le64(data_units_read, &slog->data_units_read[0]); @@ -75,11 +77,11 @@ static u16 nvmet_get_smart_log_all(struct nvmet_req *req, rcu_read_lock(); list_for_each_entry_rcu(ns, &ctrl->subsys->namespaces, dev_link) { host_reads += part_stat_read(ns->bdev->bd_part, ios[READ]); - data_units_read += - part_stat_read(ns->bdev->bd_part, sectors[READ]); + data_units_read += DIV_ROUND_UP( + part_stat_read(ns->bdev->bd_part, sectors[READ]), 1000); host_writes += part_stat_read(ns->bdev->bd_part, ios[WRITE]); - data_units_written += - part_stat_read(ns->bdev->bd_part, sectors[WRITE]); + data_units_written += DIV_ROUND_UP( + part_stat_read(ns->bdev->bd_part, sectors[WRITE]), 1000); } rcu_read_unlock(); -- 2.20.1