From patchwork Sun Aug 28 20:39:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Wysochanski X-Patchwork-Id: 12957322 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 B9A9DECAAD5 for ; Sun, 28 Aug 2022 20:39:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229586AbiH1UjZ (ORCPT ); Sun, 28 Aug 2022 16:39:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229445AbiH1UjY (ORCPT ); Sun, 28 Aug 2022 16:39:24 -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 ESMTPS id 233C125C66 for ; Sun, 28 Aug 2022 13:39:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1661719162; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=sSrVKgnxjTBFE6FlAKMYsoMoW1Fi+iQ2zVrhGT9uGDQ=; b=IFp+RQyWUOx7DwOHqlPJDXmzqGrinsjZvSDN57gJjORe+wdxj7FnDf1q4lscfb6Y3SUo6q bojnncXRShFQ5h4r/BiUyNQdGz8ul398sL2a6untWaY3ii/Efa2Co0mVFaBzO5OfTDvNbb LLCyfN2tDvSYxVxkSPImiz7IRmK4ZkY= 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-470-fpVSFqpsP3qOiETkSHoZcA-1; Sun, 28 Aug 2022 16:39:17 -0400 X-MC-Unique: fpVSFqpsP3qOiETkSHoZcA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9F42485A585; Sun, 28 Aug 2022 20:39:16 +0000 (UTC) Received: from dwysocha.rdu.csb (unknown [10.22.8.98]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 578FA40C141D; Sun, 28 Aug 2022 20:39:16 +0000 (UTC) From: Dave Wysochanski To: Anna Schumaker , Trond Myklebust , David Howells Cc: linux-nfs@vger.kernel.org, linux-cachefs@redhat.com, Benjamin Maynard , Daire Byrne Subject: [RFC PATCH v2 2/3] NFS: Configure support for netfs when NFS fscache is configured Date: Sun, 28 Aug 2022 16:39:12 -0400 Message-Id: <20220828203913.956306-3-dwysocha@redhat.com> In-Reply-To: <20220828203913.956306-1-dwysocha@redhat.com> References: <20220828203913.956306-1-dwysocha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.11.54.2 Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org As first steps for support of the netfs library when NFS_FSCACHE is configured, add NETFS_SUPPORT to Kconfig and add the required netfs_inode into struct nfs_inode. Using netfs requires we move the VFS inode structure to be stored inside struct netfs_inode, along with the fscache_cookie. Thus, create a new helper, NFSI_TO_INODE(), which is defined differently depending on whether NFS_FSCACHE is configured. In addition, use the netfs_inode() and netfs_i_cookie() helpers, and remove our own helper, nfs_i_fscache(). Later patches will convert NFS fscache to fully use netfs. Link: https://lore.kernel.org/linux-nfs/da9200f1bded9b8b078a7aef227fd6b92eb028fb.camel@hammerspace.com/ Signed-off-by: Dave Wysochanski --- fs/nfs/Kconfig | 1 + fs/nfs/delegation.c | 2 +- fs/nfs/dir.c | 2 +- fs/nfs/fscache.c | 20 +++++++++----------- fs/nfs/fscache.h | 15 ++++++--------- fs/nfs/inode.c | 6 +++--- fs/nfs/internal.h | 2 +- fs/nfs/pnfs.c | 12 ++++++------ fs/nfs/write.c | 2 +- include/linux/nfs_fs.h | 36 ++++++++++++++++++++++++------------ 10 files changed, 53 insertions(+), 45 deletions(-) diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig index 14a72224b657..8fbb6caf3481 100644 --- a/fs/nfs/Kconfig +++ b/fs/nfs/Kconfig @@ -171,6 +171,7 @@ config ROOT_NFS config NFS_FSCACHE bool "Provide NFS client caching support" depends on NFS_FS=m && FSCACHE || NFS_FS=y && FSCACHE=y + select NETFS_SUPPORT help Say Y here if you want NFS data to be cached locally on disc through the general filesystem cache manager diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 5c97cad741a7..41a2c5176783 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -306,7 +306,7 @@ nfs_start_delegation_return_locked(struct nfs_inode *nfsi) } spin_unlock(&delegation->lock); if (ret) - nfs_clear_verifier_delegated(&nfsi->vfs_inode); + nfs_clear_verifier_delegated(NFSI_TO_INODE(nfsi)); out: return ret; } diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index dbab3caa15ed..12e6c05edfcb 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -2796,7 +2796,7 @@ nfs_do_access_cache_scan(unsigned int nr_to_scan) if (nr_to_scan-- == 0) break; - inode = &nfsi->vfs_inode; + inode = NFSI_TO_INODE(nfsi); spin_lock(&inode->i_lock); if (list_empty(&nfsi->access_cache_entry_lru)) goto remove_lru_entry; diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c index e861d7bae305..a6fc1c8b6644 100644 --- a/fs/nfs/fscache.c +++ b/fs/nfs/fscache.c @@ -163,13 +163,14 @@ void nfs_fscache_init_inode(struct inode *inode) struct nfs_server *nfss = NFS_SERVER(inode); struct nfs_inode *nfsi = NFS_I(inode); - nfsi->fscache = NULL; + netfs_inode(inode)->cache = NULL; if (!(nfss->fscache && S_ISREG(inode->i_mode))) return; nfs_fscache_update_auxdata(&auxdata, inode); - nfsi->fscache = fscache_acquire_cookie(NFS_SB(inode->i_sb)->fscache, + netfs_inode(inode)->cache = fscache_acquire_cookie( + nfss->fscache, 0, nfsi->fh.data, /* index_key */ nfsi->fh.size, @@ -183,11 +184,8 @@ void nfs_fscache_init_inode(struct inode *inode) */ void nfs_fscache_clear_inode(struct inode *inode) { - struct nfs_inode *nfsi = NFS_I(inode); - struct fscache_cookie *cookie = nfs_i_fscache(inode); - - fscache_relinquish_cookie(cookie, false); - nfsi->fscache = NULL; + fscache_relinquish_cookie(netfs_i_cookie(&NFS_I(inode)->netfs), false); + netfs_inode(inode)->cache = NULL; } /* @@ -212,7 +210,7 @@ void nfs_fscache_clear_inode(struct inode *inode) void nfs_fscache_open_file(struct inode *inode, struct file *filp) { struct nfs_fscache_inode_auxdata auxdata; - struct fscache_cookie *cookie = nfs_i_fscache(inode); + struct fscache_cookie *cookie = netfs_i_cookie(&NFS_I(inode)->netfs); bool open_for_write = inode_is_open_for_write(inode); if (!fscache_cookie_valid(cookie)) @@ -230,7 +228,7 @@ EXPORT_SYMBOL_GPL(nfs_fscache_open_file); void nfs_fscache_release_file(struct inode *inode, struct file *filp) { struct nfs_fscache_inode_auxdata auxdata; - struct fscache_cookie *cookie = nfs_i_fscache(inode); + struct fscache_cookie *cookie = netfs_i_cookie(&NFS_I(inode)->netfs); loff_t i_size = i_size_read(inode); nfs_fscache_update_auxdata(&auxdata, inode); @@ -243,7 +241,7 @@ void nfs_fscache_release_file(struct inode *inode, struct file *filp) static int fscache_fallback_read_page(struct inode *inode, struct page *page) { struct netfs_cache_resources cres; - struct fscache_cookie *cookie = nfs_i_fscache(inode); + struct fscache_cookie *cookie = netfs_i_cookie(&NFS_I(inode)->netfs); struct iov_iter iter; struct bio_vec bvec[1]; int ret; @@ -271,7 +269,7 @@ static int fscache_fallback_write_page(struct inode *inode, struct page *page, bool no_space_allocated_yet) { struct netfs_cache_resources cres; - struct fscache_cookie *cookie = nfs_i_fscache(inode); + struct fscache_cookie *cookie = netfs_i_cookie(&NFS_I(inode)->netfs); struct iov_iter iter; struct bio_vec bvec[1]; loff_t start = page_offset(page); diff --git a/fs/nfs/fscache.h b/fs/nfs/fscache.h index 2a37af880978..38614ed8f951 100644 --- a/fs/nfs/fscache.h +++ b/fs/nfs/fscache.h @@ -54,7 +54,7 @@ static inline bool nfs_fscache_release_folio(struct folio *folio, gfp_t gfp) if (current_is_kswapd() || !(gfp & __GFP_FS)) return false; folio_wait_fscache(folio); - fscache_note_page_release(nfs_i_fscache(folio->mapping->host)); + fscache_note_page_release(netfs_i_cookie(&NFS_I(folio->mapping->host)->netfs)); nfs_inc_fscache_stats(folio->mapping->host, NFSIOS_FSCACHE_PAGES_UNCACHED); } @@ -66,7 +66,7 @@ static inline bool nfs_fscache_release_folio(struct folio *folio, gfp_t gfp) */ static inline int nfs_fscache_read_page(struct inode *inode, struct page *page) { - if (nfs_i_fscache(inode)) + if (netfs_inode(inode)->cache) return __nfs_fscache_read_page(inode, page); return -ENOBUFS; } @@ -78,7 +78,7 @@ static inline int nfs_fscache_read_page(struct inode *inode, struct page *page) static inline void nfs_fscache_write_page(struct inode *inode, struct page *page) { - if (nfs_i_fscache(inode)) + if (netfs_inode(inode)->cache) __nfs_fscache_write_page(inode, page); } @@ -101,13 +101,10 @@ static inline void nfs_fscache_update_auxdata(struct nfs_fscache_inode_auxdata * static inline void nfs_fscache_invalidate(struct inode *inode, int flags) { struct nfs_fscache_inode_auxdata auxdata; - struct nfs_inode *nfsi = NFS_I(inode); + struct fscache_cookie *cookie = netfs_i_cookie(&NFS_I(inode)->netfs); - if (nfsi->fscache) { - nfs_fscache_update_auxdata(&auxdata, inode); - fscache_invalidate(nfsi->fscache, &auxdata, - i_size_read(inode), flags); - } + nfs_fscache_update_auxdata(&auxdata, inode); + fscache_invalidate(cookie, &auxdata, i_size_read(inode), flags); } /* diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index b4e46b0ffa2d..94b7ed2a9b8b 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1410,7 +1410,7 @@ int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping) static bool nfs_file_has_writers(struct nfs_inode *nfsi) { - struct inode *inode = &nfsi->vfs_inode; + struct inode *inode = NFSI_TO_INODE(nfsi); if (!S_ISREG(inode->i_mode)) return false; @@ -2248,7 +2248,7 @@ struct inode *nfs_alloc_inode(struct super_block *sb) #ifdef CONFIG_NFS_V4_2 nfsi->xattr_cache = NULL; #endif - return &nfsi->vfs_inode; + return NFSI_TO_INODE(nfsi); } EXPORT_SYMBOL_GPL(nfs_alloc_inode); @@ -2272,7 +2272,7 @@ static void init_once(void *foo) { struct nfs_inode *nfsi = (struct nfs_inode *) foo; - inode_init_once(&nfsi->vfs_inode); + inode_init_once(NFSI_TO_INODE(nfsi)); INIT_LIST_HEAD(&nfsi->open_files); INIT_LIST_HEAD(&nfsi->access_cache_entry_lru); INIT_LIST_HEAD(&nfsi->access_cache_inode_lru); diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 27c720d71b4e..78d945f5f97f 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -355,7 +355,7 @@ nfs4_label_copy(struct nfs4_label *dst, struct nfs4_label *src) static inline void nfs_zap_label_cache_locked(struct nfs_inode *nfsi) { - if (nfs_server_capable(&nfsi->vfs_inode, NFS_CAP_SECURITY_LABEL)) + if (nfs_server_capable(NFSI_TO_INODE(nfsi), NFS_CAP_SECURITY_LABEL)) nfsi->cache_validity |= NFS_INO_INVALID_LABEL; } #else diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 41a9b6b58fb9..a3cc8a561458 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -763,19 +763,19 @@ static struct pnfs_layout_hdr *__pnfs_destroy_layout(struct nfs_inode *nfsi) struct pnfs_layout_hdr *lo; LIST_HEAD(tmp_list); - spin_lock(&nfsi->vfs_inode.i_lock); + spin_lock(&NFSI_TO_INODE(nfsi)->i_lock); lo = nfsi->layout; if (lo) { pnfs_get_layout_hdr(lo); pnfs_mark_layout_stateid_invalid(lo, &tmp_list); pnfs_layout_clear_fail_bit(lo, NFS_LAYOUT_RO_FAILED); pnfs_layout_clear_fail_bit(lo, NFS_LAYOUT_RW_FAILED); - spin_unlock(&nfsi->vfs_inode.i_lock); + spin_unlock(&NFSI_TO_INODE(nfsi)->i_lock); pnfs_free_lseg_list(&tmp_list); - nfs_commit_inode(&nfsi->vfs_inode, 0); + nfs_commit_inode(NFSI_TO_INODE(nfsi), 0); pnfs_put_layout_hdr(lo); } else - spin_unlock(&nfsi->vfs_inode.i_lock); + spin_unlock(&NFSI_TO_INODE(nfsi)->i_lock); return lo; } @@ -790,9 +790,9 @@ static bool pnfs_layout_removed(struct nfs_inode *nfsi, { bool ret; - spin_lock(&nfsi->vfs_inode.i_lock); + spin_lock(&NFSI_TO_INODE(nfsi)->i_lock); ret = nfsi->layout != lo; - spin_unlock(&nfsi->vfs_inode.i_lock); + spin_unlock(&NFSI_TO_INODE(nfsi)->i_lock); return ret; } diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 51a7e202d6e5..af40b947aed8 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -828,7 +828,7 @@ nfs_page_search_commits_for_head_request_locked(struct nfs_inode *nfsi, { struct nfs_page *freq, *t; struct nfs_commit_info cinfo; - struct inode *inode = &nfsi->vfs_inode; + struct inode *inode = NFSI_TO_INODE(nfsi); nfs_init_cinfo_from_inode(&cinfo, inode); diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index b32ed68e7dc4..314912991736 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -31,6 +31,10 @@ #include #include +#ifdef CONFIG_NFS_FSCACHE +#include +#endif + #include #include #include @@ -122,6 +126,10 @@ struct nfs4_xattr_cache; * nfs fs inode data in memory */ struct nfs_inode { +#ifdef CONFIG_NFS_FSCACHE + struct netfs_inode netfs; /* Netfslib context and inode */ +#endif + /* * The 64bit 'inode number' */ @@ -203,10 +211,10 @@ struct nfs_inode { /* how many bytes have been written/read and how many bytes queued up */ __u64 write_io; __u64 read_io; -#ifdef CONFIG_NFS_FSCACHE - struct fscache_cookie *fscache; +#ifndef CONFIG_NFS_FSCACHE + /* fscache uses netfs, and netfs_inode contains the inode */ + struct inode vfs_inode; #endif - struct inode vfs_inode; #ifdef CONFIG_NFS_V4_2 struct nfs4_xattr_cache *xattr_cache; @@ -281,9 +289,22 @@ struct nfs4_copy_state { #define NFS_INO_LAYOUTSTATS (11) /* layoutstats inflight */ #define NFS_INO_ODIRECT (12) /* I/O setting is O_DIRECT */ +static inline struct inode *NFSI_TO_INODE(struct nfs_inode *nfsi) +{ +#ifdef CONFIG_NFS_FSCACHE + return &nfsi->netfs.inode; +#else + return &nfsi->vfs_inode; +#endif +} + static inline struct nfs_inode *NFS_I(const struct inode *inode) { +#ifdef CONFIG_NFS_FSCACHE + return container_of(inode, struct nfs_inode, netfs.inode); +#else return container_of(inode, struct nfs_inode, vfs_inode); +#endif } static inline struct nfs_server *NFS_SB(const struct super_block *s) @@ -328,15 +349,6 @@ static inline int NFS_STALE(const struct inode *inode) return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags); } -static inline struct fscache_cookie *nfs_i_fscache(struct inode *inode) -{ -#ifdef CONFIG_NFS_FSCACHE - return NFS_I(inode)->fscache; -#else - return NULL; -#endif -} - static inline __u64 NFS_FILEID(const struct inode *inode) { return NFS_I(inode)->fileid;