From patchwork Tue Mar 8 23:26:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 12774629 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 1B50FC433F5 for ; Wed, 9 Mar 2022 01:39:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231215AbiCIBkp (ORCPT ); Tue, 8 Mar 2022 20:40:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51198 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231240AbiCIBko (ORCPT ); Tue, 8 Mar 2022 20:40:44 -0500 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 462AAD4CBD for ; Tue, 8 Mar 2022 17:39:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1646789977; 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: in-reply-to:in-reply-to:references:references; bh=GhHHLyAjfmCvHkc6zjg+9RgO+mlt1hAD4KWIlSJJ4KE=; b=CUX+sUe4I8zAtjhFGjRgvB5byrbverCVTfsHXfgwKCijrlLpOD6ZsUn9FTQQ+BdCf6P7Tl JWK6Q/E0xEOQjjobIYackTXUSuEd11E2GFDqg9G1/6aV+Yq5qI3VhGSLC4ny+WMqdvhn7h vHYSVdHL8OdWQZUklo03CHRcFSE0JhA= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-614-Pnrvi-oOOlO-5CE8Zq5CeA-1; Tue, 08 Mar 2022 18:26:31 -0500 X-MC-Unique: Pnrvi-oOOlO-5CE8Zq5CeA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 793E11091DA2; Tue, 8 Mar 2022 23:26:29 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.33.36.19]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4FB9A78C12; Tue, 8 Mar 2022 23:26:11 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH v2 05/19] netfs: Split netfs_io_* object handling out From: David Howells To: linux-cachefs@redhat.com Cc: dhowells@redhat.com, Anna Schumaker , Steve French , Dominique Martinet , Jeff Layton , David Wysochanski , Ilya Dryomov , Jeffle Xu , Linus Torvalds , 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: Tue, 08 Mar 2022 23:26:10 +0000 Message-ID: <164678197044.1200972.11511937252083343775.stgit@warthog.procyon.org.uk> In-Reply-To: <164678185692.1200972.597611902374126174.stgit@warthog.procyon.org.uk> References: <164678185692.1200972.597611902374126174.stgit@warthog.procyon.org.uk> User-Agent: StGit/1.4 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Split netfs_io_* object handling out into a file that's going to contain object allocation, get and put routines. Signed-off-by: David Howells cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164622995118.3564931.6089530629052064470.stgit@warthog.procyon.org.uk/ # v1 Reviewed-by: Jeff Layton --- fs/netfs/Makefile | 6 ++ fs/netfs/internal.h | 18 +++++++ fs/netfs/objects.c | 123 ++++++++++++++++++++++++++++++++++++++++++++++++ fs/netfs/read_helper.c | 118 ---------------------------------------------- 4 files changed, 147 insertions(+), 118 deletions(-) create mode 100644 fs/netfs/objects.c diff --git a/fs/netfs/Makefile b/fs/netfs/Makefile index c15bfc966d96..939fd00a1fc9 100644 --- a/fs/netfs/Makefile +++ b/fs/netfs/Makefile @@ -1,5 +1,9 @@ # SPDX-License-Identifier: GPL-2.0 -netfs-y := read_helper.o stats.o +netfs-y := \ + objects.o \ + read_helper.o + +netfs-$(CONFIG_NETFS_STATS) += stats.o obj-$(CONFIG_NETFS_SUPPORT) := netfs.o diff --git a/fs/netfs/internal.h b/fs/netfs/internal.h index b7f2c4459f33..cf7a3ddb16a4 100644 --- a/fs/netfs/internal.h +++ b/fs/netfs/internal.h @@ -5,17 +5,35 @@ * Written by David Howells (dhowells@redhat.com) */ +#include +#include + #ifdef pr_fmt #undef pr_fmt #endif #define pr_fmt(fmt) "netfs: " fmt +/* + * objects.c + */ +struct netfs_io_request *netfs_alloc_request(const struct netfs_request_ops *ops, + void *netfs_priv, + struct file *file); +void netfs_get_request(struct netfs_io_request *rreq); +void netfs_clear_subrequests(struct netfs_io_request *rreq, bool was_async); +void netfs_put_request(struct netfs_io_request *rreq, bool was_async); +struct netfs_io_subrequest *netfs_alloc_subrequest(struct netfs_io_request *rreq); +void netfs_put_subrequest(struct netfs_io_subrequest *subreq, bool was_async); +void netfs_get_subrequest(struct netfs_io_subrequest *subreq); + /* * read_helper.c */ extern unsigned int netfs_debug; +void netfs_rreq_work(struct work_struct *work); + /* * stats.c */ diff --git a/fs/netfs/objects.c b/fs/netfs/objects.c new file mode 100644 index 000000000000..f7383c28dc6e --- /dev/null +++ b/fs/netfs/objects.c @@ -0,0 +1,123 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Object lifetime handling and tracing. + * + * Copyright (C) 2022 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + */ + +#include +#include "internal.h" + +/* + * Allocate an I/O request and initialise it. + */ +struct netfs_io_request *netfs_alloc_request( + const struct netfs_request_ops *ops, void *netfs_priv, + struct file *file) +{ + static atomic_t debug_ids; + struct netfs_io_request *rreq; + + rreq = kzalloc(sizeof(struct netfs_io_request), GFP_KERNEL); + if (rreq) { + rreq->netfs_ops = ops; + rreq->netfs_priv = netfs_priv; + rreq->inode = file_inode(file); + rreq->i_size = i_size_read(rreq->inode); + rreq->debug_id = atomic_inc_return(&debug_ids); + INIT_LIST_HEAD(&rreq->subrequests); + INIT_WORK(&rreq->work, netfs_rreq_work); + refcount_set(&rreq->usage, 1); + __set_bit(NETFS_RREQ_IN_PROGRESS, &rreq->flags); + if (ops->init_request) + ops->init_request(rreq, file); + netfs_stat(&netfs_n_rh_rreq); + } + + return rreq; +} + +void netfs_get_request(struct netfs_io_request *rreq) +{ + refcount_inc(&rreq->usage); +} + +void netfs_clear_subrequests(struct netfs_io_request *rreq, bool was_async) +{ + struct netfs_io_subrequest *subreq; + + while (!list_empty(&rreq->subrequests)) { + subreq = list_first_entry(&rreq->subrequests, + struct netfs_io_subrequest, rreq_link); + list_del(&subreq->rreq_link); + netfs_put_subrequest(subreq, was_async); + } +} + +static void netfs_free_request(struct work_struct *work) +{ + struct netfs_io_request *rreq = + container_of(work, struct netfs_io_request, work); + netfs_clear_subrequests(rreq, false); + if (rreq->netfs_priv) + rreq->netfs_ops->cleanup(rreq->mapping, rreq->netfs_priv); + trace_netfs_rreq(rreq, netfs_rreq_trace_free); + if (rreq->cache_resources.ops) + rreq->cache_resources.ops->end_operation(&rreq->cache_resources); + kfree(rreq); + netfs_stat_d(&netfs_n_rh_rreq); +} + +void netfs_put_request(struct netfs_io_request *rreq, bool was_async) +{ + if (refcount_dec_and_test(&rreq->usage)) { + if (was_async) { + rreq->work.func = netfs_free_request; + if (!queue_work(system_unbound_wq, &rreq->work)) + BUG(); + } else { + netfs_free_request(&rreq->work); + } + } +} + +/* + * Allocate and partially initialise an I/O request structure. + */ +struct netfs_io_subrequest *netfs_alloc_subrequest(struct netfs_io_request *rreq) +{ + struct netfs_io_subrequest *subreq; + + subreq = kzalloc(sizeof(struct netfs_io_subrequest), GFP_KERNEL); + if (subreq) { + INIT_LIST_HEAD(&subreq->rreq_link); + refcount_set(&subreq->usage, 2); + subreq->rreq = rreq; + netfs_get_request(rreq); + netfs_stat(&netfs_n_rh_sreq); + } + + return subreq; +} + +void netfs_get_subrequest(struct netfs_io_subrequest *subreq) +{ + refcount_inc(&subreq->usage); +} + +static void __netfs_put_subrequest(struct netfs_io_subrequest *subreq, + bool was_async) +{ + struct netfs_io_request *rreq = subreq->rreq; + + trace_netfs_sreq(subreq, netfs_sreq_trace_free); + kfree(subreq); + netfs_stat_d(&netfs_n_rh_sreq); + netfs_put_request(rreq, was_async); +} + +void netfs_put_subrequest(struct netfs_io_subrequest *subreq, bool was_async) +{ + if (refcount_dec_and_test(&subreq->usage)) + __netfs_put_subrequest(subreq, was_async); +} diff --git a/fs/netfs/read_helper.c b/fs/netfs/read_helper.c index 26d54055b17e..ef23ef9889d5 100644 --- a/fs/netfs/read_helper.c +++ b/fs/netfs/read_helper.c @@ -27,122 +27,6 @@ unsigned netfs_debug; module_param_named(debug, netfs_debug, uint, S_IWUSR | S_IRUGO); MODULE_PARM_DESC(netfs_debug, "Netfs support debugging mask"); -static void netfs_rreq_work(struct work_struct *); -static void __netfs_put_subrequest(struct netfs_io_subrequest *, bool); - -static void netfs_put_subrequest(struct netfs_io_subrequest *subreq, - bool was_async) -{ - if (refcount_dec_and_test(&subreq->usage)) - __netfs_put_subrequest(subreq, was_async); -} - -static struct netfs_io_request *netfs_alloc_request( - const struct netfs_request_ops *ops, void *netfs_priv, - struct file *file) -{ - static atomic_t debug_ids; - struct netfs_io_request *rreq; - - rreq = kzalloc(sizeof(struct netfs_io_request), GFP_KERNEL); - if (rreq) { - rreq->netfs_ops = ops; - rreq->netfs_priv = netfs_priv; - rreq->inode = file_inode(file); - rreq->i_size = i_size_read(rreq->inode); - rreq->debug_id = atomic_inc_return(&debug_ids); - INIT_LIST_HEAD(&rreq->subrequests); - INIT_WORK(&rreq->work, netfs_rreq_work); - refcount_set(&rreq->usage, 1); - __set_bit(NETFS_RREQ_IN_PROGRESS, &rreq->flags); - if (ops->init_request) - ops->init_request(rreq, file); - netfs_stat(&netfs_n_rh_rreq); - } - - return rreq; -} - -static void netfs_get_request(struct netfs_io_request *rreq) -{ - refcount_inc(&rreq->usage); -} - -static void netfs_clear_subrequests(struct netfs_io_request *rreq, bool was_async) -{ - struct netfs_io_subrequest *subreq; - - while (!list_empty(&rreq->subrequests)) { - subreq = list_first_entry(&rreq->subrequests, - struct netfs_io_subrequest, rreq_link); - list_del(&subreq->rreq_link); - netfs_put_subrequest(subreq, was_async); - } -} - -static void netfs_free_request(struct work_struct *work) -{ - struct netfs_io_request *rreq = - container_of(work, struct netfs_io_request, work); - netfs_clear_subrequests(rreq, false); - if (rreq->netfs_priv) - rreq->netfs_ops->cleanup(rreq->mapping, rreq->netfs_priv); - trace_netfs_rreq(rreq, netfs_rreq_trace_free); - if (rreq->cache_resources.ops) - rreq->cache_resources.ops->end_operation(&rreq->cache_resources); - kfree(rreq); - netfs_stat_d(&netfs_n_rh_rreq); -} - -static void netfs_put_request(struct netfs_io_request *rreq, bool was_async) -{ - if (refcount_dec_and_test(&rreq->usage)) { - if (was_async) { - rreq->work.func = netfs_free_request; - if (!queue_work(system_unbound_wq, &rreq->work)) - BUG(); - } else { - netfs_free_request(&rreq->work); - } - } -} - -/* - * Allocate and partially initialise an I/O request structure. - */ -static struct netfs_io_subrequest *netfs_alloc_subrequest( - struct netfs_io_request *rreq) -{ - struct netfs_io_subrequest *subreq; - - subreq = kzalloc(sizeof(struct netfs_io_subrequest), GFP_KERNEL); - if (subreq) { - INIT_LIST_HEAD(&subreq->rreq_link); - refcount_set(&subreq->usage, 2); - subreq->rreq = rreq; - netfs_get_request(rreq); - netfs_stat(&netfs_n_rh_sreq); - } - - return subreq; -} - -static void netfs_get_subrequest(struct netfs_io_subrequest *subreq) -{ - refcount_inc(&subreq->usage); -} - -static void __netfs_put_subrequest(struct netfs_io_subrequest *subreq, - bool was_async) -{ - struct netfs_io_request *rreq = subreq->rreq; - - trace_netfs_sreq(subreq, netfs_sreq_trace_free); - kfree(subreq); - netfs_stat_d(&netfs_n_rh_sreq); - netfs_put_request(rreq, was_async); -} - /* * Clear the unread part of an I/O request. */ @@ -558,7 +442,7 @@ static void netfs_rreq_assess(struct netfs_io_request *rreq, bool was_async) netfs_rreq_completed(rreq, was_async); } -static void netfs_rreq_work(struct work_struct *work) +void netfs_rreq_work(struct work_struct *work) { struct netfs_io_request *rreq = container_of(work, struct netfs_io_request, work);