From patchwork Fri Oct 27 18:19:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Keith Busch X-Patchwork-Id: 13438855 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 2AD58C25B47 for ; Fri, 27 Oct 2023 18:20:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232483AbjJ0SUA (ORCPT ); Fri, 27 Oct 2023 14:20:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232615AbjJ0ST7 (ORCPT ); Fri, 27 Oct 2023 14:19:59 -0400 Received: from mx0b-00082601.pphosted.com (mx0b-00082601.pphosted.com [67.231.153.30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02E04196 for ; Fri, 27 Oct 2023 11:19:56 -0700 (PDT) Received: from pps.filterd (m0109331.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 39RE5YgB006135 for ; Fri, 27 Oct 2023 11:19:56 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=meta.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=s2048-2021-q4; bh=14K4aSvh9zzHeXc3eYmxxneQuIpMkFPFLr74aX4jAbM=; b=TGJuFBE1aQjjfurggepHZ27mNihKdx2Cf+0ozDFYC96is4pMipoL1wxmKukgQ4daoIXR U8S8JrYgx1OEvPlyXy2wyqzAiNZKENQHJIVAiv0oaJcQDpEdu+m/19eYTERHWTvLL0J6 cfICDNy98PCDuTh1hB0uxaZb3cCg24DbS6XjF5pPnA6yT6PGfaHpqUGLuiY8OAyIxkKn FOoMGsjTg8pwNSSfbiiUSAydR3tYLBN2V8xm7OOAQ1b8feFhNTJhsFmJrTaKYZSrl5Gi eWKAzepqdRvvehXHXf0nKNB3LUXGbpa025Q/1V1Dnq/1Qs15LKoIYnAN1NcUvOEZw2Zw HA== Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 3u0c4pu407-4 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 27 Oct 2023 11:19:56 -0700 Received: from twshared16118.09.ash9.facebook.com (2620:10d:c0a8:1b::30) by mail.thefacebook.com (2620:10d:c0a8:82::b) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.34; Fri, 27 Oct 2023 11:19:54 -0700 Received: by devbig007.nao1.facebook.com (Postfix, from userid 544533) id 3ADAD20D0939E; Fri, 27 Oct 2023 11:19:36 -0700 (PDT) From: Keith Busch To: , , CC: , , , , Keith Busch Subject: [PATCHv2 0/4] block integrity: directly map user space addresses Date: Fri, 27 Oct 2023 11:19:25 -0700 Message-ID: <20231027181929.2589937-1-kbusch@meta.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-GUID: H6QB65NB7nYSZsNatm27fcYAf1D9tRBz X-Proofpoint-ORIG-GUID: H6QB65NB7nYSZsNatm27fcYAf1D9tRBz X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-10-27_17,2023-10-27_01,2023-05-22_02 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Keith Busch Handling passthrough metadata ("integrity") today introduces overhead and complications that we can avoid if we just map user space addresses directly. This patch series implements that, falling back to a kernel bounce buffer if necessary. v1->v2: Bounce to a kernel buffer if the user buffer fails to map to the device's integrity constraints. The user address remains pinned for the duration of the IO, which makes the copy out on completion safe within interrupt context. Merged up to current io_uring branch, which moved the driver owned flags to a different file. Keith Busch (4): block: bio-integrity: directly map user buffers nvme: use bio_integrity_map_user iouring: remove IORING_URING_CMD_POLLED io_uring: remove uring_cmd cookie block/bio-integrity.c | 202 ++++++++++++++++++++++++++++++++++++++ drivers/nvme/host/ioctl.c | 174 +++++--------------------------- include/linux/bio.h | 9 ++ include/linux/io_uring.h | 9 +- io_uring/uring_cmd.c | 1 - 5 files changed, 240 insertions(+), 155 deletions(-)