From patchwork Wed May 25 14:26:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 12861262 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 3D8ACC433F5 for ; Wed, 25 May 2022 14:26:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242606AbiEYO0Q (ORCPT ); Wed, 25 May 2022 10:26:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53956 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232660AbiEYO0P (ORCPT ); Wed, 25 May 2022 10:26:15 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id B2D49DFC1 for ; Wed, 25 May 2022 07:26:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1653488773; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=DviXGUPuVXl1YVhpu7BiGSF4HSycXcqvMbHaLdNKhAE=; b=LCPvpKFGNyRkseFoRapeSfZ6dsCTk4Q24/Io8m/bCfC5ufEDRsU3GeWEndUpfY66pycutO PJWzv/UTplhh2VuPkgvUc387B6SBeBoV0d27nnrM8NpCOPWCRZhDREsQT1CqmGdSaFbdPp BFIUiEFuCPp6+xqZjYuzrExdANCpuTE= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-584-Izt4Z1b5NHikLOAQDHya0w-1; Wed, 25 May 2022 10:26:10 -0400 X-MC-Unique: Izt4Z1b5NHikLOAQDHya0w-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 19F5D811E80; Wed, 25 May 2022 14:26:10 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.33.36.8]) by smtp.corp.redhat.com (Postfix) with ESMTP id AFFE31410DD5; Wed, 25 May 2022 14:26:08 +0000 (UTC) Subject: [PATCH 0/7] cifs: Use iov_iters down to the network transport From: David Howells To: Steve French Cc: linux-cifs@vger.kernel.org, Rohith Surabattula , Shyam Prasad N , Steve French , dhowells@redhat.com, Shyam Prasad N , Rohith Surabattula , Jeff Layton , Al Viro , linux-cifs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Date: Wed, 25 May 2022 15:26:08 +0100 Message-ID: <165348876794.2106726.9240233279581920208.stgit@warthog.procyon.org.uk> User-Agent: StGit/1.4 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.7 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Hi Steve, Here's a second version of a subset of my cifs-experimental branch. It alters the cifs driver to pass iov_iters down to the lowest layers where they can be passed to the network transport. I've fixed the RDMA code to work, fixed a few more bugs and addressed most of checkpatch moans. Note that there's a bunch of stuff #if'd out in patch 5 that get removed in patch 6 - otherwise diff produces an awful mess. There's also a couple of changes in patch 7 from Namjae Jeon to make soft-iWarp work. Feel free to discard that patch if you get a better version from him. I've pushed the patches here also: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=cifs-for-sfrench David --- David Howells (6): iov_iter: Add a function to extract an iter's buffers to a bvec iter iov_iter: Add a general purpose iteration function cifs: Add some helper functions cifs: Add a function to read into an iter from a socket cifs: Change the I/O paths to use an iterator rather than a page list cifs: Remove unused code Namjae Jeon (1): cifs, ksmbd: Fix MAX_SGE count for softiwarp fs/cifs/cifsencrypt.c | 40 +- fs/cifs/cifsfs.h | 3 + fs/cifs/cifsglob.h | 29 +- fs/cifs/cifsproto.h | 11 +- fs/cifs/cifssmb.c | 253 +++++--- fs/cifs/connect.c | 16 + fs/cifs/file.c | 1269 ++++++++++++------------------------- fs/cifs/fscache.c | 22 +- fs/cifs/fscache.h | 10 +- fs/cifs/misc.c | 109 ---- fs/cifs/smb2ops.c | 367 ++++++----- fs/cifs/smb2pdu.c | 35 +- fs/cifs/smbdirect.c | 317 ++++----- fs/cifs/smbdirect.h | 6 +- fs/cifs/transport.c | 37 +- fs/ksmbd/transport_rdma.c | 2 +- include/linux/uio.h | 8 + lib/iov_iter.c | 133 ++++ 18 files changed, 1124 insertions(+), 1543 deletions(-)