From patchwork Mon Jul 13 16:27:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 11660231 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 7BF0414E3 for ; Mon, 13 Jul 2020 16:28:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61531206F5 for ; Mon, 13 Jul 2020 16:28:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Ergay/3F" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729593AbgGMQ16 (ORCPT ); Mon, 13 Jul 2020 12:27:58 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:40467 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729846AbgGMQ15 (ORCPT ); Mon, 13 Jul 2020 12:27:57 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1594657676; 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=GPqCyKmxk5bmr4GI6eZ9r8X5VU2eAhQ5GXlXXDbYfyQ=; b=Ergay/3FG9dJRs6g+g1nklu1911xcNDVFRocLoiAbfbEYWHq7fgd8drdBw3QYNFjxlu6JF qTqAdAXEhJBiTNACfLxkpXjePhc56Nm1g2PbguoInaPk96ML9Jip1+JCBa4QyXQTtsSDOK CiI8Rr2O3BAvzC4+BmzpZ7hqyhRyr+8= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-30-UbkhdcJiO76QhtJmUg1Lqw-1; Mon, 13 Jul 2020 12:27:53 -0400 X-MC-Unique: UbkhdcJiO76QhtJmUg1Lqw-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 9EF7D18FF665; Mon, 13 Jul 2020 16:27:50 +0000 (UTC) Received: from warthog.procyon.org.uk (ovpn-112-113.rdu2.redhat.com [10.10.112.113]) by smtp.corp.redhat.com (Postfix) with ESMTP id A6DCE1CA; Mon, 13 Jul 2020 16:27:44 +0000 (UTC) Subject: [PATCH 00/14] fscache: Rewrite 1: Disable and clean in preparation for rewrite From: David Howells To: Trond Myklebust , Anna Schumaker , Steve French , Alexander Viro , Matthew Wilcox Cc: Jeff Layton , Dave Wysochanski , dhowells@redhat.com, linux-cachefs@redhat.com, linux-afs@lists.infradead.org, linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org, ceph-devel@vger.kernel.org, v9fs-developer@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Date: Mon, 13 Jul 2020 17:27:43 +0100 Message-ID: <159465766378.1376105.11619976251039287525.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.22 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Here's a set of patches that disables the network filesystems that use fscache and then remove a whole chunk of the fscache codebase pending it being rewritten. The following parts of fscache have been removed: - The object state machine - The I/O operation manager - All non-transient references from fscache to the netfs's data - All non-transient callbacks from fscache to the netfs - The backing page I/O monitoring - The tracking of netfs pages that fscache knows about - The tracking of netfs pages that need writing to the cache - The use of bmap to work out if a page is stored in the cache - The copy of data to/from backing pages to netfs pages. The corresponding cachefiles bits have also been removed. These patches can be found as part of the branch here: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=fscache-iter David --- David Howells (1): fscache: Remove the I/O operation manager fs/9p/Kconfig | 2 +- fs/Makefile | 2 +- fs/afs/Kconfig | 1 + fs/afs/cache.c | 54 -- fs/afs/cell.c | 9 +- fs/afs/dir.c | 242 +++++-- fs/afs/file.c | 575 +++++++-------- fs/afs/fs_operation.c | 4 +- fs/afs/fsclient.c | 154 ++-- fs/afs/inode.c | 57 +- fs/afs/internal.h | 58 +- fs/afs/rxrpc.c | 150 ++-- fs/afs/volume.c | 9 +- fs/afs/write.c | 413 +++++++---- fs/afs/yfsclient.c | 113 ++- fs/cachefiles/Makefile | 3 +- fs/cachefiles/bind.c | 11 +- fs/cachefiles/content-map.c | 476 ++++++++++++ fs/cachefiles/daemon.c | 10 +- fs/cachefiles/interface.c | 564 ++++++++------- fs/cachefiles/internal.h | 139 ++-- fs/cachefiles/io.c | 279 +++++++ fs/cachefiles/main.c | 12 +- fs/cachefiles/namei.c | 508 +++++-------- fs/cachefiles/rdwr.c | 974 ------------------------- fs/cachefiles/xattr.c | 263 +++---- fs/ceph/Kconfig | 2 +- fs/cifs/Kconfig | 2 +- fs/fscache/Kconfig | 8 + fs/fscache/Makefile | 10 +- fs/fscache/cache.c | 136 ++-- fs/fscache/cookie.c | 769 ++++++++------------ fs/fscache/dispatcher.c | 150 ++++ fs/fscache/fsdef.c | 56 +- fs/fscache/histogram.c | 2 +- fs/fscache/internal.h | 260 +++---- fs/fscache/io.c | 201 +++++ fs/fscache/main.c | 35 +- fs/fscache/netfs.c | 10 +- fs/fscache/obj.c | 345 +++++++++ fs/fscache/object-list.c | 129 +--- fs/fscache/object.c | 1133 ----------------------------- fs/fscache/object_bits.c | 120 +++ fs/fscache/operation.c | 633 ---------------- fs/fscache/page.c | 1248 -------------------------------- fs/fscache/proc.c | 13 +- fs/fscache/read_helper.c | 688 ++++++++++++++++++ fs/fscache/stats.c | 265 +++---- fs/internal.h | 5 - fs/nfs/Kconfig | 2 +- fs/nfs/fscache-index.c | 4 +- fs/read_write.c | 1 + include/linux/fs.h | 2 + include/linux/fscache-cache.h | 508 +++---------- include/linux/fscache-obsolete.h | 13 + include/linux/fscache.h | 814 ++++++++------------- include/linux/mm.h | 1 + include/linux/pagemap.h | 14 + include/linux/uio.h | 11 + include/net/af_rxrpc.h | 2 +- include/trace/events/afs.h | 51 +- include/trace/events/cachefiles.h | 285 ++++++-- include/trace/events/fscache.h | 421 ++--------- include/trace/events/fscache_support.h | 91 +++ lib/iov_iter.c | 286 +++++++- mm/filemap.c | 27 +- net/rxrpc/recvmsg.c | 9 +- 67 files changed, 5598 insertions(+), 8246 deletions(-) create mode 100644 fs/cachefiles/content-map.c create mode 100644 fs/cachefiles/io.c delete mode 100644 fs/cachefiles/rdwr.c create mode 100644 fs/fscache/dispatcher.c create mode 100644 fs/fscache/io.c create mode 100644 fs/fscache/obj.c delete mode 100644 fs/fscache/object.c create mode 100644 fs/fscache/object_bits.c delete mode 100644 fs/fscache/operation.c delete mode 100644 fs/fscache/page.c create mode 100644 fs/fscache/read_helper.c create mode 100644 include/linux/fscache-obsolete.h create mode 100644 include/trace/events/fscache_support.h