From patchwork Sun Sep 6 07:40:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tom Yan X-Patchwork-Id: 11759459 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5FAA714F9 for ; Sun, 6 Sep 2020 07:40:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 45209208B3 for ; Sun, 6 Sep 2020 07:40:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="IohpRBUS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726732AbgIFHkb (ORCPT ); Sun, 6 Sep 2020 03:40:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43110 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725306AbgIFHka (ORCPT ); Sun, 6 Sep 2020 03:40:30 -0400 Received: from mail-pj1-x1044.google.com (mail-pj1-x1044.google.com [IPv6:2607:f8b0:4864:20::1044]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6763C061573; Sun, 6 Sep 2020 00:40:30 -0700 (PDT) Received: by mail-pj1-x1044.google.com with SMTP id mm21so5157368pjb.4; Sun, 06 Sep 2020 00:40:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=EcapTIGFf+31wVMqsHZgBSE+2BUv5P+WBgtFpuHKTB4=; b=IohpRBUSjpKYerGmxviqQ2AOFnyqoDZrqXiBIggLrX3WkU1AatImH+tf9g5CLN5dcZ I2oh+Jm+JCF5rS1ei/EMkPk63YWn07A5Cpw93XKzSYn720bkiuAfzprkN2P3AzmEAh8d ykicYd0urFPifbLW/y9AjoxzFwcC4Dd6tPzhkluFuQebBX1S095+ZcI2lRmkqf9/zHeX 0EDp9SY9EIYqeIsdcCKJ7L4xH79IZm2MXEpshfwYw47uiuo2plXgMwHyHippLH/M0SAz yue1et+gYVXLahYzNjxYzKd2qmFX/oP6AMwwFeTEjoulamlPFa/Prcz711fIWMcZ0p8R KEMw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=EcapTIGFf+31wVMqsHZgBSE+2BUv5P+WBgtFpuHKTB4=; b=cnKYPVuEkp2WSY2pdhsQTUbgoiNMkiOlzI03d3C2YVKET/fQ4m737dTAUrhQauwBek NfDIiQka65LGGYbftIqMMvEUJxJQ7ONT2CeibGk1ehHPdMhsNc8r88yB7yiXxZps2d32 Q33yxeEtdL12twC4xw0OHnVI9WjL7FaSbauk5aWoC+R3Wo+dXipyrvX/na7NlFzMF+cT qg/u1A3JpBgjzDOQOB/vVgnxoKFevX8zY+or7XXPbVXyI/QctCmcSNOfav0v9AffUhoN YHM1nsx16MAPukLeOjf+UmPMcDRwQpBBtq8txTjkmiKv3AZY1XIuC20a+jGF0TAiWYr3 XAow== X-Gm-Message-State: AOAM533Lo1Gyev5EU34q++Z6bWgVJ7X2Y9I6kdgPuDXWs5mr9M8BQ+N0 OVZML9mBc0IKkv8TuvEgJzyQpZorw/0= X-Google-Smtp-Source: ABdhPJwdG+z97JBo7a5OGlRBcgyEe2Ft55o0W8p1ezDgaFRP07eCmTWEcTzi510thMVSbSS0HDbmag== X-Received: by 2002:a17:902:bd06:: with SMTP id p6mr15330599pls.255.1599378029657; Sun, 06 Sep 2020 00:40:29 -0700 (PDT) Received: from localhost.localdomain ([161.81.62.213]) by smtp.gmail.com with ESMTPSA id f28sm11634243pfq.191.2020.09.06.00.40.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 06 Sep 2020 00:40:29 -0700 (PDT) From: Tom Yan To: linux-scsi@vger.kernel.org, dgilbert@interlog.com, bvanassche@acm.org, gregkh@linuxfoundation.org Cc: stern@rowland.harvard.edu, akinobu.mita@gmail.com, hch@lst.de, linux-api@vger.kernel.org, Tom Yan Subject: [PATCH v2 2/4] scsi: sg: implement BLKSSZGET Date: Sun, 6 Sep 2020 15:40:16 +0800 Message-Id: <20200906074018.2370-2-tom.ty89@gmail.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200906074018.2370-1-tom.ty89@gmail.com> References: <20200906074018.2370-1-tom.ty89@gmail.com> MIME-Version: 1.0 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Provide an ioctl to get the logical sector size so that the maximum bytes per request can be derived. Follow-up of the BLKSECTGET fix. Signed-off-by: Tom Yan --- drivers/scsi/sg.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index e57831910228..0e3f084141a3 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -1118,6 +1118,8 @@ sg_ioctl_common(struct file *filp, Sg_device *sdp, Sg_fd *sfp, max_sectors = min_t(unsigned int, USHRT_MAX, queue_max_sectors(sdp->device->request_queue)); return put_user(max_sectors, ip); + case BLKSSZGET: + return put_user(queue_logical_block_size(sdp->device->request_queue), ip); case BLKTRACESETUP: return blk_trace_setup(sdp->device->request_queue, sdp->disk->disk_name,