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=-0.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 2D0B5C2D0DB for ; Mon, 27 Jan 2020 16:55:17 +0000 (UTC) Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 62838214AF for ; Mon, 27 Jan 2020 16:55:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=web.de header.i=@web.de header.b="OyN902Q+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 62838214AF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=web.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernelnewbies-bounces@kernelnewbies.org Received: from localhost ([::1] helo=shelob.surriel.com) by shelob.surriel.com with esmtp (Exim 4.92.3) (envelope-from ) id 1iw7eo-0005Jn-H5; Mon, 27 Jan 2020 11:54:38 -0500 Received: from mout.web.de ([212.227.17.12]) by shelob.surriel.com with esmtps (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.92.3) (envelope-from ) id 1ivgmY-00078O-0Y for kernelnewbies@kernelnewbies.org; Sun, 26 Jan 2020 07:12:50 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1580040765; bh=xi5IvZ8X3QkzaLoh3JcDGbPTorqEEfUJhB1wzqMdkpg=; h=X-UI-Sender-Class:Date:From:To:Subject; b=OyN902Q+VsmMh56uNftQUyE53mBDvf3LxnHYEvs86lCl+9TwqUyVr4rxE+SHPN8yT QZz8R10vdfaOCT2HU6P3Xzuv5fk36sOVFatw1Z8CALu8tP6OcGPtpV9KgbB9jqDYPA 9O+pb9T1VzBTmnZeZFiZB8nZux1Tvx2gbm93Dj/s= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from luklap ([87.123.206.131]) by smtp.web.de (mrweb101 [213.165.67.124]) with ESMTPSA (Nemesis) id 0LqDQS-1jZAK336hc-00dnnI for ; Sun, 26 Jan 2020 13:07:39 +0100 Date: Sun, 26 Jan 2020 13:07:38 +0100 From: Lukas Straub To: kernelnewbies@kernelnewbies.org Subject: Ordering guarantee inside a single bio? Message-ID: <20200126130738.0fdc47d6@luklap> MIME-Version: 1.0 X-Provags-ID: V03:K1:13vqwJPcito0ibt24BbuHEKz+c0e88U6eAiV59q5GsMCMfCl344 OLq20c01KQvZA5bTpVUILLZPyGPL8X6n43IZir6HhP2u6zF+EoSOTeAYC9eFTO6AXw0Qyts HmK48+RVq0VdADcRiu/OTf6stUejS+sB8PEzlLWAuWYiEphyQ4ftrkHJtOIwLzGXI+10ZWC r950SQiP5vQsKMpI2X6Jg== X-UI-Out-Filterresults: notjunk:1;V03:K0:37VSVjvJsNo=:BuuMJ6ZENqU3W0fPTxB1lX eQwDUt351yGumL+cEHyR5eVawxUsbeh4qCRzwRJy3Gjrb1SZQlzytOsHng20kiCs3DRCt1vdN GUoMrOoe11dg2lYlS6hx5dLMEOJR+Ie76dgvfmRvKk3X8OfJ6rOrz7IroBCAIf8u12k161DCi WJFPOtCS3D13zUos4ll2b9N1ZW//kZdRTc7Q+s3R1ReqV1+OZN3/XIhs7ZYp7dfkt/luLo6Zo 6JyOydYcRtmIaj0ZpRdcx2zuk+D1azxm92lToyW61MOrfXHQE0BDyQMCQpzEXAMBEkz1xpXIT /sKiQwLqhe1KoxIDYyQ401sYlrh113aFSvDj0PQRA/98Qr13WpCfPB4kAYhF5ddE4NMu79mHr n7eRuKBlcYq77gbJZ5XZsBQzu2v+GuKHLRcUAC7fKVfAYW37xk9os8aa5g96wQvAJN172Xc/Q sBGxlzb9iNOHJLJNjTGm4v5K+gjO1DBFUZU/0P7NeexLhiNFLAJI1vXJhRkwmkeh6LCuXyzp4 Vg4Uuyu+/vyzxWap/T1L5owCvGUbZjSADl4STP8xVwMcvlsuJX3FCDTPhucB7RAJ8PL/9oWZz +Fxxx1QbxtmGMxexcROZ7MFUhZsiF8QUotVCYNLra4i064LYrDMsRr+6Qj7y9G0LUeAO61boA X7gdrt52KbHlChdNSOGbm5F2DlJxkz3AfnumEvC461RbhQtsS4V96wiHWje7IL4mHQnEWl5ZR hjVGVlMXV4+B1wEZ7u1pX762k8tT8LBSSlGbCouB+TzCjyi0ovWRZv06qRYhm3I7iwMX3FqzD 8lmXKmqB23r05/rHWOu0a6FQUmonb7KteibcC9T8PTh511VKkqU7s3X27BthQaAIObOr2quh4 gkY83p1kkMwCFFX7kczAyT1cJGvxmNsLRS9fzluad2OanVWEjVKmlZ8Vtl5asoi2/lLtdRsqA 5XgHkQgKXjkmIFBfza+1HnduuoPN5jd0CWOOznVtYH+tVSqtlaAqbBRFhd51Gy8xeqtYKuJSg zDnL4wljiGBHIAW1HJNc6RhUxwl5FZjDG5JrJOrBy+zGAh2qMqREBzAHfUtXuCju5BiFiGOcD EpErki24kCBWDKNl2HSyze+M5eLmb/a9BFCfkkQWgPRUmnvC47jvA0oHFlwimvkoNHKxWZ72I p6xeUMBqRWyV4B5TELoiq5e0Y1qvZsfN1vHys6w+udF/4YsN+iYsFGb8J3CRS5Id49UrwX0nM W2V+3m96xPrdHiFdI X-Mailman-Approved-At: Mon, 27 Jan 2020 11:54:37 -0500 X-BeenThere: kernelnewbies@kernelnewbies.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Learn about the Linux kernel List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kernelnewbies-bounces@kernelnewbies.org Hello Everyone, I am planing to write a new device-mapper target and I'm wondering if there is a ordering guarantee for the operation inside a single bio? For example if I issue a write bio to sector 0 of length 4, is it guaranteed that sector 0 is written first and sector 3 is written last? Regards, Lukas Straub _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies