From patchwork Wed Oct 4 18:52:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 729655 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 D2BFAE7C4E9 for ; Wed, 4 Oct 2023 18:54:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244812AbjJDSyG (ORCPT ); Wed, 4 Oct 2023 14:54:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44900 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244662AbjJDSxX (ORCPT ); Wed, 4 Oct 2023 14:53:23 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CD55EAD; Wed, 4 Oct 2023 11:53:10 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 991D0C4AF5D; Wed, 4 Oct 2023 18:52:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1696445590; bh=D6ZmjuGzwm6T+vyily+kDIFcQOdKBE4hFTbZ/ePB+AU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=itt8PzKJ3oWcrWlkMnCNvO4V6JTvOPUcLklZdoWmgvE5EApLHzHWrmToC24YZNaD5 IXhfNXxqslFjk2IDoML0tgHmxZeVSse9inCpsSBFQSfTlM1ZaWIaW/14Rx1EGjZsGv ntPIZbb8JIR5CnQGLAz3U+Yl+EqlRJ7alNTo2vhAqP1qPDfCkGnYm9uO4hbjfLGGYe YEvpoo+MWSAaL6IHDgaS7acBet/4WUTpUf2h/c5f8fTK/EJTvBZGCYjPEshuHePoR6 5qJESbj+fdqCM8yjNUYu0BZ+4eFYl4Bgrydaw45QVSAj3T6mpEPEYoifAe1zFkZy7d wEjqNw+7VtILg== From: Jeff Layton To: Alexander Viro , Christian Brauner , Linus Torvalds , David Sterba , Amir Goldstein , Theodore Ts'o , Eric Biederman , Kees Cook , Jeremy Kerr , Arnd Bergmann , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Greg Kroah-Hartman , =?utf-8?q?Arve_Hj=C3=B8nne?= =?utf-8?q?v=C3=A5g?= , Todd Kjos , Martijn Coenen , Joel Fernandes , Carlos Llamas , Suren Baghdasaryan , Mattia Dongili , Dennis Dalessandro , Jason Gunthorpe , Leon Romanovsky , Brad Warrum , Ritu Agarwal , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Mark Gross , Jiri Slaby , Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , David Sterba , David Howells , Marc Dionne , Ian Kent , Luis de Bethencourt , Salah Triki , "Tigran A. Aivazian" , Chris Mason , Josef Bacik , Xiubo Li , Ilya Dryomov , Jan Harkes , coda@cs.cmu.edu, Joel Becker , Christoph Hellwig , Nicolas Pitre , "Rafael J. Wysocki" , Ard Biesheuvel , Gao Xiang , Chao Yu , Yue Hu , Jeffle Xu , Namjae Jeon , Sungjong Seo , Jan Kara , Andreas Dilger , Jaegeuk Kim , OGAWA Hirofumi , Christoph Hellwig , Miklos Szeredi , Bob Peterson , Andreas Gruenbacher , Richard Weinberger , Anton Ivanov , Johannes Berg , Mikulas Patocka , Mike Kravetz , Muchun Song , Jan Kara , David Woodhouse , Dave Kleikamp , Tejun Heo , Trond Myklebust , Anna Schumaker , Chuck Lever , Neil Brown , Olga Kornievskaia , Dai Ngo , Tom Talpey , Ryusuke Konishi , Anton Altaparmakov , Konstantin Komarov , Mark Fasheh , Joseph Qi , Bob Copeland , Mike Marshall , Martin Brandenburg , Luis Chamberlain , Iurii Zaikin , Tony Luck , "Guilherme G. Piccoli" , Anders Larsen , Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Sergey Senozhatsky , Phillip Lougher , Steven Rostedt , Masami Hiramatsu , Evgeniy Dushistov , Chandan Babu R , "Darrick J. Wong" , Damien Le Moal , Naohiro Aota , Johannes Thumshirn , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Hugh Dickins , Andrew Morton , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , John Johansen , Paul Moore , James Morris , "Serge E. Hallyn" , Stephen Smalley , Eric Paris , Kent Overstreet , Brian Foster Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-rdma@vger.kernel.org, linux-serial@vger.kernel.org, linux-usb@vger.kernel.org, v9fs@lists.linux.dev, linux-afs@lists.infradead.org, autofs@vger.kernel.org, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org, codalist@coda.cs.cmu.edu, linux-efi@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, gfs2@lists.linux.dev, linux-um@lists.infradead.org, linux-mtd@lists.infradead.org, jfs-discussion@lists.sourceforge.net, linux-nfs@vger.kernel.org, linux-nilfs@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, ntfs3@lists.linux.dev, ocfs2-devel@lists.linux.dev, linux-karma-devel@lists.sourceforge.net, devel@lists.orangefs.org, linux-unionfs@vger.kernel.org, linux-hardening@vger.kernel.org, reiserfs-devel@vger.kernel.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-trace-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, bpf@vger.kernel.org, netdev@vger.kernel.org, apparmor@lists.ubuntu.com, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, linux-bcachefs@vger.kernel.org Subject: [PATCH v2 02/89] fs: convert core infrastructure to new timestamp accessors Date: Wed, 4 Oct 2023 14:52:38 -0400 Message-ID: <20231004185239.80830-2-jlayton@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231004185239.80830-1-jlayton@kernel.org> References: <20231004185221.80802-1-jlayton@kernel.org> <20231004185239.80830-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org Convert the core vfs code to use the new timestamp accessor functions. Signed-off-by: Jeff Layton --- fs/attr.c | 4 ++-- fs/bad_inode.c | 2 +- fs/binfmt_misc.c | 2 +- fs/inode.c | 35 +++++++++++++++++++++-------------- fs/nsfs.c | 2 +- fs/pipe.c | 2 +- fs/stack.c | 4 ++-- fs/stat.c | 4 ++-- 8 files changed, 31 insertions(+), 24 deletions(-) diff --git a/fs/attr.c b/fs/attr.c index a8ae5f6d9b16..bdf5deb06ea9 100644 --- a/fs/attr.c +++ b/fs/attr.c @@ -308,9 +308,9 @@ void setattr_copy(struct mnt_idmap *idmap, struct inode *inode, i_uid_update(idmap, attr, inode); i_gid_update(idmap, attr, inode); if (ia_valid & ATTR_ATIME) - inode->i_atime = attr->ia_atime; + inode_set_atime_to_ts(inode, attr->ia_atime); if (ia_valid & ATTR_MTIME) - inode->i_mtime = attr->ia_mtime; + inode_set_mtime_to_ts(inode, attr->ia_mtime); if (ia_valid & ATTR_CTIME) inode_set_ctime_to_ts(inode, attr->ia_ctime); if (ia_valid & ATTR_MODE) { diff --git a/fs/bad_inode.c b/fs/bad_inode.c index 83f9566c973b..316d88da2ce1 100644 --- a/fs/bad_inode.c +++ b/fs/bad_inode.c @@ -208,7 +208,7 @@ void make_bad_inode(struct inode *inode) remove_inode_hash(inode); inode->i_mode = S_IFREG; - inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); + simple_inode_init_ts(inode); inode->i_op = &bad_inode_ops; inode->i_opflags &= ~IOP_XATTR; inode->i_fop = &bad_file_ops; diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index e0108d17b085..5d2be9b0a0a5 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -547,7 +547,7 @@ static struct inode *bm_get_inode(struct super_block *sb, int mode) if (inode) { inode->i_ino = get_next_ino(); inode->i_mode = mode; - inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); + simple_inode_init_ts(inode); } return inode; } diff --git a/fs/inode.c b/fs/inode.c index 3bb6193f436c..4f8984b97df0 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1837,27 +1837,29 @@ EXPORT_SYMBOL(bmap); static int relatime_need_update(struct vfsmount *mnt, struct inode *inode, struct timespec64 now) { - struct timespec64 ctime; + struct timespec64 atime, mtime, ctime; if (!(mnt->mnt_flags & MNT_RELATIME)) return 1; /* * Is mtime younger than or equal to atime? If yes, update atime: */ - if (timespec64_compare(&inode->i_mtime, &inode->i_atime) >= 0) + atime = inode_get_atime(inode); + mtime = inode_get_mtime(inode); + if (timespec64_compare(&mtime, &atime) >= 0) return 1; /* * Is ctime younger than or equal to atime? If yes, update atime: */ ctime = inode_get_ctime(inode); - if (timespec64_compare(&ctime, &inode->i_atime) >= 0) + if (timespec64_compare(&ctime, &atime) >= 0) return 1; /* * Is the previous atime value older than a day? If yes, * update atime: */ - if ((long)(now.tv_sec - inode->i_atime.tv_sec) >= 24*60*60) + if ((long)(now.tv_sec - atime.tv_sec) >= 24*60*60) return 1; /* * Good, we can skip the atime update: @@ -1888,12 +1890,13 @@ int inode_update_timestamps(struct inode *inode, int flags) if (flags & (S_MTIME|S_CTIME|S_VERSION)) { struct timespec64 ctime = inode_get_ctime(inode); + struct timespec64 mtime = inode_get_mtime(inode); now = inode_set_ctime_current(inode); if (!timespec64_equal(&now, &ctime)) updated |= S_CTIME; - if (!timespec64_equal(&now, &inode->i_mtime)) { - inode->i_mtime = now; + if (!timespec64_equal(&now, &mtime)) { + inode_set_mtime_to_ts(inode, now); updated |= S_MTIME; } if (IS_I_VERSION(inode) && inode_maybe_inc_iversion(inode, updated)) @@ -1903,8 +1906,10 @@ int inode_update_timestamps(struct inode *inode, int flags) } if (flags & S_ATIME) { - if (!timespec64_equal(&now, &inode->i_atime)) { - inode->i_atime = now; + struct timespec64 atime = inode_get_atime(inode); + + if (!timespec64_equal(&now, &atime)) { + inode_set_atime_to_ts(inode, now); updated |= S_ATIME; } } @@ -1963,7 +1968,7 @@ EXPORT_SYMBOL(inode_update_time); bool atime_needs_update(const struct path *path, struct inode *inode) { struct vfsmount *mnt = path->mnt; - struct timespec64 now; + struct timespec64 now, atime; if (inode->i_flags & S_NOATIME) return false; @@ -1989,7 +1994,8 @@ bool atime_needs_update(const struct path *path, struct inode *inode) if (!relatime_need_update(mnt, inode, now)) return false; - if (timespec64_equal(&inode->i_atime, &now)) + atime = inode_get_atime(inode); + if (timespec64_equal(&atime, &now)) return false; return true; @@ -2106,17 +2112,18 @@ static int inode_needs_update_time(struct inode *inode) { int sync_it = 0; struct timespec64 now = current_time(inode); - struct timespec64 ctime; + struct timespec64 ts; /* First try to exhaust all avenues to not sync */ if (IS_NOCMTIME(inode)) return 0; - if (!timespec64_equal(&inode->i_mtime, &now)) + ts = inode_get_mtime(inode); + if (!timespec64_equal(&ts, &now)) sync_it = S_MTIME; - ctime = inode_get_ctime(inode); - if (!timespec64_equal(&ctime, &now)) + ts = inode_get_ctime(inode); + if (!timespec64_equal(&ts, &now)) sync_it |= S_CTIME; if (IS_I_VERSION(inode) && inode_iversion_need_inc(inode)) diff --git a/fs/nsfs.c b/fs/nsfs.c index 647a22433bd8..9a4b228d42fa 100644 --- a/fs/nsfs.c +++ b/fs/nsfs.c @@ -84,7 +84,7 @@ static int __ns_get_path(struct path *path, struct ns_common *ns) return -ENOMEM; } inode->i_ino = ns->inum; - inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); + simple_inode_init_ts(inode); inode->i_flags |= S_IMMUTABLE; inode->i_mode = S_IFREG | S_IRUGO; inode->i_fop = &ns_file_operations; diff --git a/fs/pipe.c b/fs/pipe.c index 485e3be8903c..8916c455a469 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -908,7 +908,7 @@ static struct inode * get_pipe_inode(void) inode->i_mode = S_IFIFO | S_IRUSR | S_IWUSR; inode->i_uid = current_fsuid(); inode->i_gid = current_fsgid(); - inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); + simple_inode_init_ts(inode); return inode; diff --git a/fs/stack.c b/fs/stack.c index b5e01bdb5f5f..f18920119944 100644 --- a/fs/stack.c +++ b/fs/stack.c @@ -66,8 +66,8 @@ void fsstack_copy_attr_all(struct inode *dest, const struct inode *src) dest->i_uid = src->i_uid; dest->i_gid = src->i_gid; dest->i_rdev = src->i_rdev; - dest->i_atime = src->i_atime; - dest->i_mtime = src->i_mtime; + inode_set_atime_to_ts(dest, inode_get_atime(src)); + inode_set_mtime_to_ts(dest, inode_get_mtime(src)); inode_set_ctime_to_ts(dest, inode_get_ctime(src)); dest->i_blkbits = src->i_blkbits; dest->i_flags = src->i_flags; diff --git a/fs/stat.c b/fs/stat.c index d43a5cc1bfa4..24bb0209e459 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -57,8 +57,8 @@ void generic_fillattr(struct mnt_idmap *idmap, u32 request_mask, stat->gid = vfsgid_into_kgid(vfsgid); stat->rdev = inode->i_rdev; stat->size = i_size_read(inode); - stat->atime = inode->i_atime; - stat->mtime = inode->i_mtime; + stat->atime = inode_get_atime(inode); + stat->mtime = inode_get_mtime(inode); stat->ctime = inode_get_ctime(inode); stat->blksize = i_blocksize(inode); stat->blocks = inode->i_blocks; From patchwork Wed Oct 4 18:55:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 729653 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 5A2B3E7C4FA for ; Wed, 4 Oct 2023 19:04:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245346AbjJDTEt (ORCPT ); Wed, 4 Oct 2023 15:04:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58008 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245486AbjJDTBq (ORCPT ); Wed, 4 Oct 2023 15:01:46 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A4BC42712; Wed, 4 Oct 2023 11:56:02 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3C352C116A3; Wed, 4 Oct 2023 18:55:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1696445762; bh=sLBQkX6C3uZBg0HDRv8gvWKbTBaFbLFrj7RUWYAQhtM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SDZrwTkRfcCOZGW15481BzgRhMnUfqbehqGZ70SkT07TpnQHXu6UZfqn2H3DH/IgB NREMwV+WxrirSQUoJ/gwdJuN20x7Oz09gVp00C5J4jUQVvPa7HndP8pgLhpw+3XdE6 sgwldkiPDhzPzj2g3RqGA/gLpn5OXG2RxT2QYd/q9czrrGxn2+biB5bnvlPb+wW7mJ 1yXSUZIQbCkJJ9A+zsHeXrou8bbwxUhD+l+R1pwZkVAnrBM97dSGO7YTQ9XanaOiAq xtFzLLS3PpGLDldOhnDRuM8I6A6BQmH5bnq3JkmbbMZcpJWkhUCscVq82P/pMn/I9p +1GtWq5/j2IpA== From: Jeff Layton To: Alexander Viro , Christian Brauner , Linus Torvalds , David Sterba , Amir Goldstein , Theodore Ts'o , Eric Biederman , Kees Cook , Jeremy Kerr , Arnd Bergmann , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Greg Kroah-Hartman , =?utf-8?q?Arve_Hj=C3=B8nne?= =?utf-8?q?v=C3=A5g?= , Todd Kjos , Martijn Coenen , Joel Fernandes , Carlos Llamas , Suren Baghdasaryan , Mattia Dongili , Dennis Dalessandro , Jason Gunthorpe , Leon Romanovsky , Brad Warrum , Ritu Agarwal , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Mark Gross , Jiri Slaby , Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , David Sterba , David Howells , Marc Dionne , Ian Kent , Luis de Bethencourt , Salah Triki , "Tigran A. Aivazian" , Chris Mason , Josef Bacik , Xiubo Li , Ilya Dryomov , Jan Harkes , coda@cs.cmu.edu, Joel Becker , Christoph Hellwig , Nicolas Pitre , "Rafael J. Wysocki" , Ard Biesheuvel , Gao Xiang , Chao Yu , Yue Hu , Jeffle Xu , Namjae Jeon , Sungjong Seo , Jan Kara , Andreas Dilger , Jaegeuk Kim , OGAWA Hirofumi , Christoph Hellwig , Miklos Szeredi , Bob Peterson , Andreas Gruenbacher , Richard Weinberger , Anton Ivanov , Johannes Berg , Mikulas Patocka , Mike Kravetz , Muchun Song , Jan Kara , David Woodhouse , Dave Kleikamp , Tejun Heo , Trond Myklebust , Anna Schumaker , Chuck Lever , Neil Brown , Olga Kornievskaia , Dai Ngo , Tom Talpey , Ryusuke Konishi , Anton Altaparmakov , Konstantin Komarov , Mark Fasheh , Joseph Qi , Bob Copeland , Mike Marshall , Martin Brandenburg , Luis Chamberlain , Iurii Zaikin , Tony Luck , "Guilherme G. Piccoli" , Anders Larsen , Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Sergey Senozhatsky , Phillip Lougher , Steven Rostedt , Masami Hiramatsu , Evgeniy Dushistov , Chandan Babu R , "Darrick J. Wong" , Damien Le Moal , Naohiro Aota , Johannes Thumshirn , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Hugh Dickins , Andrew Morton , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , John Johansen , Paul Moore , James Morris , "Serge E. Hallyn" , Stephen Smalley , Eric Paris , Kent Overstreet , Brian Foster Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-rdma@vger.kernel.org, linux-serial@vger.kernel.org, linux-usb@vger.kernel.org, v9fs@lists.linux.dev, linux-afs@lists.infradead.org, autofs@vger.kernel.org, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org, codalist@coda.cs.cmu.edu, linux-efi@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, gfs2@lists.linux.dev, linux-um@lists.infradead.org, linux-mtd@lists.infradead.org, jfs-discussion@lists.sourceforge.net, linux-nfs@vger.kernel.org, linux-nilfs@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, ntfs3@lists.linux.dev, ocfs2-devel@lists.linux.dev, linux-karma-devel@lists.sourceforge.net, devel@lists.orangefs.org, linux-unionfs@vger.kernel.org, linux-hardening@vger.kernel.org, reiserfs-devel@vger.kernel.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-trace-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, bpf@vger.kernel.org, netdev@vger.kernel.org, apparmor@lists.ubuntu.com, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, linux-bcachefs@vger.kernel.org Subject: [PATCH v2 88/89] fs: switch timespec64 fields in inode to discrete integers Date: Wed, 4 Oct 2023 14:55:29 -0400 Message-ID: <20231004185530.82088-2-jlayton@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231004185530.82088-1-jlayton@kernel.org> References: <20231004185530.82088-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org This shaves 8 bytes off struct inode with a garden-variety Fedora Kconfig. Signed-off-by: Jeff Layton --- include/linux/fs.h | 53 ++++++++++++++++++++++++++-------------------- 1 file changed, 30 insertions(+), 23 deletions(-) diff --git a/include/linux/fs.h b/include/linux/fs.h index 84fdaf399fbe..485b5e21c8e5 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -671,9 +671,12 @@ struct inode { }; dev_t i_rdev; loff_t i_size; - struct timespec64 __i_atime; - struct timespec64 __i_mtime; - struct timespec64 __i_ctime; /* use inode_*_ctime accessors! */ + time64_t i_atime_sec; + time64_t i_mtime_sec; + time64_t i_ctime_sec; + u32 i_atime_nsec; + u32 i_mtime_nsec; + u32 i_ctime_nsec; spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ unsigned short i_bytes; u8 i_blkbits; @@ -1517,23 +1520,27 @@ struct timespec64 inode_set_ctime_current(struct inode *inode); static inline time64_t inode_get_atime_sec(const struct inode *inode) { - return inode->__i_atime.tv_sec; + return inode->i_atime_sec; } static inline long inode_get_atime_nsec(const struct inode *inode) { - return inode->__i_atime.tv_nsec; + return inode->i_atime_nsec; } static inline struct timespec64 inode_get_atime(const struct inode *inode) { - return inode->__i_atime; + struct timespec64 ts = { .tv_sec = inode_get_atime_sec(inode), + .tv_nsec = inode_get_atime_nsec(inode) }; + + return ts; } static inline struct timespec64 inode_set_atime_to_ts(struct inode *inode, struct timespec64 ts) { - inode->__i_atime = ts; + inode->i_atime_sec = ts.tv_sec; + inode->i_atime_nsec = ts.tv_nsec; return ts; } @@ -1542,28 +1549,32 @@ static inline struct timespec64 inode_set_atime(struct inode *inode, { struct timespec64 ts = { .tv_sec = sec, .tv_nsec = nsec }; + return inode_set_atime_to_ts(inode, ts); } static inline time64_t inode_get_mtime_sec(const struct inode *inode) { - return inode->__i_mtime.tv_sec; + return inode->i_mtime_sec; } static inline long inode_get_mtime_nsec(const struct inode *inode) { - return inode->__i_mtime.tv_nsec; + return inode->i_mtime_nsec; } static inline struct timespec64 inode_get_mtime(const struct inode *inode) { - return inode->__i_mtime; + struct timespec64 ts = { .tv_sec = inode_get_mtime_sec(inode), + .tv_nsec = inode_get_mtime_nsec(inode) }; + return ts; } static inline struct timespec64 inode_set_mtime_to_ts(struct inode *inode, struct timespec64 ts) { - inode->__i_mtime = ts; + inode->i_mtime_sec = ts.tv_sec; + inode->i_mtime_nsec = ts.tv_nsec; return ts; } @@ -1577,34 +1588,30 @@ static inline struct timespec64 inode_set_mtime(struct inode *inode, static inline time64_t inode_get_ctime_sec(const struct inode *inode) { - return inode->__i_ctime.tv_sec; + return inode->i_ctime_sec; } static inline long inode_get_ctime_nsec(const struct inode *inode) { - return inode->__i_ctime.tv_nsec; + return inode->i_ctime_nsec; } static inline struct timespec64 inode_get_ctime(const struct inode *inode) { - return inode->__i_ctime; + struct timespec64 ts = { .tv_sec = inode_get_ctime_sec(inode), + .tv_nsec = inode_get_ctime_nsec(inode) }; + + return ts; } static inline struct timespec64 inode_set_ctime_to_ts(struct inode *inode, struct timespec64 ts) { - inode->__i_ctime = ts; + inode->i_ctime_sec = ts.tv_sec; + inode->i_ctime_nsec = ts.tv_nsec; return ts; } -/** - * inode_set_ctime - set the ctime in the inode - * @inode: inode in which to set the ctime - * @sec: tv_sec value to set - * @nsec: tv_nsec value to set - * - * Set the ctime in @inode to { @sec, @nsec } - */ static inline struct timespec64 inode_set_ctime(struct inode *inode, time64_t sec, long nsec) { From patchwork Wed Oct 4 18:55:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 729654 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 3E4CAE7C4F5 for ; Wed, 4 Oct 2023 19:04:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245313AbjJDTEr (ORCPT ); Wed, 4 Oct 2023 15:04:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37926 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245664AbjJDTCA (ORCPT ); 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Piccoli" , Anders Larsen , Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Sergey Senozhatsky , Phillip Lougher , Steven Rostedt , Masami Hiramatsu , Evgeniy Dushistov , Chandan Babu R , "Darrick J. Wong" , Damien Le Moal , Naohiro Aota , Johannes Thumshirn , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Hugh Dickins , Andrew Morton , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , John Johansen , Paul Moore , James Morris , "Serge E. Hallyn" , Stephen Smalley , Eric Paris , Kent Overstreet , Brian Foster Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-rdma@vger.kernel.org, linux-serial@vger.kernel.org, linux-usb@vger.kernel.org, v9fs@lists.linux.dev, linux-afs@lists.infradead.org, autofs@vger.kernel.org, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org, codalist@coda.cs.cmu.edu, linux-efi@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, gfs2@lists.linux.dev, linux-um@lists.infradead.org, linux-mtd@lists.infradead.org, jfs-discussion@lists.sourceforge.net, linux-nfs@vger.kernel.org, linux-nilfs@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, ntfs3@lists.linux.dev, ocfs2-devel@lists.linux.dev, linux-karma-devel@lists.sourceforge.net, devel@lists.orangefs.org, linux-unionfs@vger.kernel.org, linux-hardening@vger.kernel.org, reiserfs-devel@vger.kernel.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-trace-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, bpf@vger.kernel.org, netdev@vger.kernel.org, apparmor@lists.ubuntu.com, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, linux-bcachefs@vger.kernel.org Subject: [PATCH v2 89/89] fs: move i_generation into new hole created after timestamp conversion Date: Wed, 4 Oct 2023 14:55:30 -0400 Message-ID: <20231004185530.82088-3-jlayton@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231004185530.82088-1-jlayton@kernel.org> References: <20231004185530.82088-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org The recent change to use discrete integers instead of struct timespec64 shaved 8 bytes off of struct inode, but it also moves the i_lock into the previous cacheline, away from the fields that it protects. Move i_generation above the i_lock, which moves the new 4 byte hole to just after the i_fsnotify_mask in my setup. Suggested-by: Amir Goldstein Signed-off-by: Jeff Layton --- include/linux/fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/fs.h b/include/linux/fs.h index 485b5e21c8e5..686c9f33e725 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -677,6 +677,7 @@ struct inode { u32 i_atime_nsec; u32 i_mtime_nsec; u32 i_ctime_nsec; + u32 i_generation; spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ unsigned short i_bytes; u8 i_blkbits; @@ -733,7 +734,6 @@ struct inode { unsigned i_dir_seq; }; - __u32 i_generation; #ifdef CONFIG_FSNOTIFY __u32 i_fsnotify_mask; /* all events this inode cares about */