From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E354C37156; Thu, 28 Sep 2023 11:06:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EF540C4160E; Thu, 28 Sep 2023 11:06:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695899200; bh=KcEb7Ur9VnfCswhdPaiHlW6A+8Un/231FkVSjN0vVmY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LIvJMQV9gV0uW8yl32NSd4yb2599TLMQSz3pZ7A8RvzTMK+/pPweiGT83QuRE6Ap1 RJ4tHrEtdELF24JEcAXBlbRxCLgD4fFKMvaVxDYJKFUi3JGR08fTlWqCpRUQLEU1eL PLdctIni/gLihdwFGrq6SVBHRpLIcoURicUh3JGLAt4t51ztAQPhDNYHtf1HHGTOrp XAB3XmZIrDME0ElXf57Dd8FtxB0Uiap7czp3ZlR45ObMUeHSnxd6fREH7G/U4RgfCh xv1/nw1L9/w3ErqEe74BXlZqblyXh/mVR1R03Etd6mg/RnXyu8EBj+lRYoEkTAJg+R yYzEQo7GNicAA== 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=20Hj=C3=B8nnev=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=20J=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 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 Subject: [PATCH 87/87] fs: move i_blocks up a few places in struct inode Date: Thu, 28 Sep 2023 07:05:54 -0400 Message-ID: <20230928110554.34758-3-jlayton@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230928110554.34758-1-jlayton@kernel.org> References: <20230928110554.34758-1-jlayton@kernel.org> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The recent change to use discrete integers instead of struct timespec64 in struct inode shaved 8 bytes off of it, but it also moves the i_lock into the previous cacheline, away from the fields that it protects. Move i_blocks up above the i_lock, which moves the new 4 byte hole to just after the timestamps, without changing the size of the structure. 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 de902ff2938b..3e0fe0f52e7c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -677,11 +677,11 @@ struct inode { u32 i_atime_nsec; u32 i_mtime_nsec; u32 i_ctime_nsec; + blkcnt_t i_blocks; spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ unsigned short i_bytes; u8 i_blkbits; u8 i_write_hint; - blkcnt_t i_blocks; #ifdef __NEED_I_SIZE_ORDERED seqcount_t i_size_seqcount; -- 2.41.0 From mboxrd@z Thu Jan 1 00:00:00 1970 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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CFAF3E9413E for ; Sat, 7 Oct 2023 01:58:54 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=LIvJMQV9; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4S2T3x3Sq9z3bTQ for ; Sat, 7 Oct 2023 12:58:53 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=LIvJMQV9; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=145.40.68.75; helo=ams.source.kernel.org; envelope-from=jlayton@kernel.org; receiver=lists.ozlabs.org) Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Rx9fC70Xzz2y1l; Thu, 28 Sep 2023 21:06:43 +1000 (AEST) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by ams.source.kernel.org (Postfix) with ESMTP id 0FB05B81BBB; Thu, 28 Sep 2023 11:06:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EF540C4160E; Thu, 28 Sep 2023 11:06:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695899200; bh=KcEb7Ur9VnfCswhdPaiHlW6A+8Un/231FkVSjN0vVmY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LIvJMQV9gV0uW8yl32NSd4yb2599TLMQSz3pZ7A8RvzTMK+/pPweiGT83QuRE6Ap1 RJ4tHrEtdELF24JEcAXBlbRxCLgD4fFKMvaVxDYJKFUi3JGR08fTlWqCpRUQLEU1eL PLdctIni/gLihdwFGrq6SVBHRpLIcoURicUh3JGLAt4t51ztAQPhDNYHtf1HHGTOrp XAB3XmZIrDME0ElXf57Dd8FtxB0Uiap7czp3ZlR45ObMUeHSnxd6fREH7G/U4RgfCh xv1/nw1L9/w3ErqEe74BXlZqblyXh/mVR1R03Etd6mg/RnXyu8EBj+lRYoEkTAJg+R yYzEQo7GNicAA== 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=20Hj=C3=B8nnev=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=20J=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 Subject: [PATCH 87/87] fs: move i_blocks up a few places in struct inode Date: Thu, 28 Sep 2023 07:05:54 -0400 Message-ID: <20230928110554.34758-3-jlayton@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230928110554.34758-1-jlayton@kernel.org> References: <20230928110554.34758-1-jlayton@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Sat, 07 Oct 2023 12:58:24 +1100 X-BeenThere: linux-erofs@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development of Linux EROFS file system List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jfs-discussion@lists.sourceforge.net, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, gfs2@lists.linux.dev, linux-mm@kvack.org, linux-mtd@lists.infradead.org, linux-hardening@vger.kernel.org, linux-afs@lists.infradead.org, linux-s390@vger.kernel.org, linux-nilfs@vger.kernel.org, linux-rdma@vger.kernel.org, linux-unionfs@vger.kernel.org, codalist@coda.cs.cmu.edu, linux-serial@vger.kernel.org, linux-ext4@vger.kernel.org, devel@lists.orangefs.org, linux-trace-kernel@vger.kernel.org, linux-cifs@vger.kernel.org, selinux@vger.kernel.org, apparmor@lists.ubuntu.com, autofs@vger.kernel.org, linux-um@lists.infradead.org, reiserfs-devel@vger.kernel.org, ocfs2-devel@lists.linux.dev, ceph-devel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, linuxppc-dev@lists.ozlabs.org, v9fs@lists.linux.dev, linux-usb@vger.kernel.org, samba-technical@lists.samba.org, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel. org, linux-security-module@vger.kernel.org, netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, ntfs3@lists.linux.dev, linux-erofs@lists.ozlabs.org, linux-karma-devel@lists.sourceforge.net, linux-btrfs@vger.kernel.org Errors-To: linux-erofs-bounces+linux-erofs=archiver.kernel.org@lists.ozlabs.org Sender: "Linux-erofs" The recent change to use discrete integers instead of struct timespec64 in struct inode shaved 8 bytes off of it, but it also moves the i_lock into the previous cacheline, away from the fields that it protects. Move i_blocks up above the i_lock, which moves the new 4 byte hole to just after the timestamps, without changing the size of the structure. 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 de902ff2938b..3e0fe0f52e7c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -677,11 +677,11 @@ struct inode { u32 i_atime_nsec; u32 i_mtime_nsec; u32 i_ctime_nsec; + blkcnt_t i_blocks; spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ unsigned short i_bytes; u8 i_blkbits; u8 i_write_hint; - blkcnt_t i_blocks; #ifdef __NEED_I_SIZE_ORDERED seqcount_t i_size_seqcount; -- 2.41.0 From mboxrd@z Thu Jan 1 00:00:00 1970 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 lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 55C9AE732C0 for ; Thu, 28 Sep 2023 11:06:55 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-2.v29.lw.sourceforge.com) by sfs-ml-2.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1qlor8-0004Sj-IH; Thu, 28 Sep 2023 11:06:54 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-2.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1qlor3-0004S0-Bn; Thu, 28 Sep 2023 11:06:49 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=AZYm+3IMy7PsScQJ1WtwjofEM45ISgwj290K5ddP3W4=; b=hUODD9UxB7OIYgMDWMvS34I1A0 zIl2loyptfkBjh0u8l5iqJtKs4Y6MSHs6L9LzxPpXp1sZ9akYo0svgBLx27W9QdFTyVMXw92CeQs1 7yBEC6/ut3beIaLeKD5GjDOqRAetZ6+rpgmF8Siw6srvcjkkD1BG0NB9tZe7Jrt6rXdM=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=AZYm+3IMy7PsScQJ1WtwjofEM45ISgwj290K5ddP3W4=; b=OLpFUaLIMLu9nFouwaPPWR1FFM jlX6FKZdwA2bLt+NhYzG0aRIc2emqYKxYCxGMKnE1NoQnVHzJY4VMXZ/wW7E/tcah51w3nu8XDDN6 KfUH4c+z4DGf1Tk0TGE3qSFpk+tfQC/nHZ6nEumgE77/jTi4AjpfWbSGtqqlRg2BK7+o=; Received: from ams.source.kernel.org ([145.40.68.75]) by sfi-mx-1.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1qlor1-009nfp-HL; Thu, 28 Sep 2023 11:06:48 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by ams.source.kernel.org (Postfix) with ESMTP id 0FB05B81BBB; Thu, 28 Sep 2023 11:06:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EF540C4160E; Thu, 28 Sep 2023 11:06:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695899200; bh=KcEb7Ur9VnfCswhdPaiHlW6A+8Un/231FkVSjN0vVmY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LIvJMQV9gV0uW8yl32NSd4yb2599TLMQSz3pZ7A8RvzTMK+/pPweiGT83QuRE6Ap1 RJ4tHrEtdELF24JEcAXBlbRxCLgD4fFKMvaVxDYJKFUi3JGR08fTlWqCpRUQLEU1eL PLdctIni/gLihdwFGrq6SVBHRpLIcoURicUh3JGLAt4t51ztAQPhDNYHtf1HHGTOrp XAB3XmZIrDME0ElXf57Dd8FtxB0Uiap7czp3ZlR45ObMUeHSnxd6fREH7G/U4RgfCh xv1/nw1L9/w3ErqEe74BXlZqblyXh/mVR1R03Etd6mg/RnXyu8EBj+lRYoEkTAJg+R yYzEQo7GNicAA== 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=20Hj=C3=B8nnev=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=20J=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 Date: Thu, 28 Sep 2023 07:05:54 -0400 Message-ID: <20230928110554.34758-3-jlayton@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230928110554.34758-1-jlayton@kernel.org> References: <20230928110554.34758-1-jlayton@kernel.org> MIME-Version: 1.0 X-Headers-End: 1qlor1-009nfp-HL Subject: [f2fs-dev] [PATCH 87/87] fs: move i_blocks up a few places in struct inode X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jfs-discussion@lists.sourceforge.net, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, gfs2@lists.linux.dev, linux-mm@kvack.org, linux-mtd@lists.infradead.org, linux-hardening@vger.kernel.org, linux-afs@lists.infradead.org, linux-s390@vger.kernel.org, linux-nilfs@vger.kernel.org, linux-rdma@vger.kernel.org, linux-unionfs@vger.kernel.org, codalist@coda.cs.cmu.edu, linux-serial@vger.kernel.org, linux-ext4@vger.kernel.org, devel@lists.orangefs.org, linux-trace-kernel@vger.kernel.org, linux-cifs@vger.kernel.org, selinux@vger.kernel.org, apparmor@lists.ubuntu.com, autofs@vger.kernel.org, linux-um@lists.infradead.org, reiserfs-devel@vger.kernel.org, ocfs2-devel@lists.linux.dev, ceph-devel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, linuxppc-dev@lists.ozlabs.org, v9fs@lists.linux.dev, linux-usb@vger.kernel.org, samba-technical@lists.samba.org, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, linux-security-module@vger.kernel.org, netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, ntfs3@lists.linux.dev, linux-erofs@lists.ozlabs.org, linux-karma-devel@lists.sourceforge.net, linux-btrfs@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net The recent change to use discrete integers instead of struct timespec64 in struct inode shaved 8 bytes off of it, but it also moves the i_lock into the previous cacheline, away from the fields that it protects. Move i_blocks up above the i_lock, which moves the new 4 byte hole to just after the timestamps, without changing the size of the structure. 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 de902ff2938b..3e0fe0f52e7c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -677,11 +677,11 @@ struct inode { u32 i_atime_nsec; u32 i_mtime_nsec; u32 i_ctime_nsec; + blkcnt_t i_blocks; spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ unsigned short i_bytes; u8 i_blkbits; u8 i_write_hint; - blkcnt_t i_blocks; #ifdef __NEED_I_SIZE_ORDERED seqcount_t i_size_seqcount; -- 2.41.0 _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Layton Subject: [PATCH 87/87] fs: move i_blocks up a few places in struct inode Date: Thu, 28 Sep 2023 07:05:54 -0400 Message-ID: <20230928110554.34758-3-jlayton@kernel.org> References: <20230928110554.34758-1-jlayton@kernel.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695899200; bh=KcEb7Ur9VnfCswhdPaiHlW6A+8Un/231FkVSjN0vVmY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LIvJMQV9gV0uW8yl32NSd4yb2599TLMQSz3pZ7A8RvzTMK+/pPweiGT83QuRE6Ap1 RJ4tHrEtdELF24JEcAXBlbRxCLgD4fFKMvaVxDYJKFUi3JGR08fTlWqCpRUQLEU1eL PLdctIni/gLihdwFGrq6SVBHRpLIcoURicUh3JGLAt4t51ztAQPhDNYHtf1HHGTOrp XAB3XmZIrDME0ElXf57Dd8FtxB0Uiap7czp3ZlR45ObMUeHSnxd6fREH7G/U4RgfCh xv1/nw1L9/w3ErqEe74BXlZqblyXh/mVR1R03Etd6mg/RnXyu8EBj+lRYoEkTAJg+R yYzEQo7GNicAA== In-Reply-To: <20230928110554.34758-1-jlayton@kernel.org> List-Id: List-Subscribe: List-Unsubscribe: Content-Type: text/plain; charset="us-ascii" 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=20Hj=C3=B8nnev=C3=A5g?= , Todd Kjos , Martijn Coenen , Joel 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. The recent change to use discrete integers instead of struct timespec64 in struct inode shaved 8 bytes off of it, but it also moves the i_lock into the previous cacheline, away from the fields that it protects. Move i_blocks up above the i_lock, which moves the new 4 byte hole to just after the timestamps, without changing the size of the structure. 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 de902ff2938b..3e0fe0f52e7c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -677,11 +677,11 @@ struct inode { u32 i_atime_nsec; u32 i_mtime_nsec; u32 i_ctime_nsec; + blkcnt_t i_blocks; spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ unsigned short i_bytes; u8 i_blkbits; u8 i_write_hint; - blkcnt_t i_blocks; #ifdef __NEED_I_SIZE_ORDERED seqcount_t i_size_seqcount; -- 2.41.0 From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A3200E732C2 for ; Thu, 28 Sep 2023 11:06:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ZVS+FSNhYKwzNuMJpzHVEUjIXI1z3H3fy/mnP8y07Aw=; b=T09aZkfX8NdBm4 S9CgdEEyFmHdqXjOKS6exZHvp2Sa1JVpzGud018xQYHvYge3wE5yg9/7+TG1h84zy79jIrEsgpM4J LfuC7EK41bibbeCyk5ssZKt1Jg4si6PXeDQ4zSyUTlBrvWSaIDxB2LQVXfoo89ctL3+wxkXOYRTuH kbhjUdNCDzPg/8x0PaCRXvSNA1weOHqsWqkpUYB1wt91i0e3WhfVYpenpGJmQzvrmThq3esiv1CMW QpwNcNYVciKGQOKLHncujA2jZR2ez/g4LOmr4OqlDjzdEzebPTeqDutZINK4Ata+lichnhjsP7fKV ZTCKwqrn99sAdlsBKPrQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qlor4-0034rq-08; Thu, 28 Sep 2023 11:06:50 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qloqw-0034kt-2S; Thu, 28 Sep 2023 11:06:47 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by ams.source.kernel.org (Postfix) with ESMTP id 0FB05B81BBB; Thu, 28 Sep 2023 11:06:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EF540C4160E; Thu, 28 Sep 2023 11:06:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695899200; bh=KcEb7Ur9VnfCswhdPaiHlW6A+8Un/231FkVSjN0vVmY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LIvJMQV9gV0uW8yl32NSd4yb2599TLMQSz3pZ7A8RvzTMK+/pPweiGT83QuRE6Ap1 RJ4tHrEtdELF24JEcAXBlbRxCLgD4fFKMvaVxDYJKFUi3JGR08fTlWqCpRUQLEU1eL PLdctIni/gLihdwFGrq6SVBHRpLIcoURicUh3JGLAt4t51ztAQPhDNYHtf1HHGTOrp XAB3XmZIrDME0ElXf57Dd8FtxB0Uiap7czp3ZlR45ObMUeHSnxd6fREH7G/U4RgfCh xv1/nw1L9/w3ErqEe74BXlZqblyXh/mVR1R03Etd6mg/RnXyu8EBj+lRYoEkTAJg+R yYzEQo7GNicAA== 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=20Hj=C3=B8nnev=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=20J=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 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 Subject: [PATCH 87/87] fs: move i_blocks up a few places in struct inode Date: Thu, 28 Sep 2023 07:05:54 -0400 Message-ID: <20230928110554.34758-3-jlayton@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230928110554.34758-1-jlayton@kernel.org> References: <20230928110554.34758-1-jlayton@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230928_040643_133315_58DCC698 X-CRM114-Status: GOOD ( 17.43 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org The recent change to use discrete integers instead of struct timespec64 in struct inode shaved 8 bytes off of it, but it also moves the i_lock into the previous cacheline, away from the fields that it protects. Move i_blocks up above the i_lock, which moves the new 4 byte hole to just after the timestamps, without changing the size of the structure. 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 de902ff2938b..3e0fe0f52e7c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -677,11 +677,11 @@ struct inode { u32 i_atime_nsec; u32 i_mtime_nsec; u32 i_ctime_nsec; + blkcnt_t i_blocks; spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ unsigned short i_bytes; u8 i_blkbits; u8 i_write_hint; - blkcnt_t i_blocks; #ifdef __NEED_I_SIZE_ORDERED seqcount_t i_size_seqcount; -- 2.41.0 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/ From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F2494CE7AF3 for ; Fri, 29 Sep 2023 15:36:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=hYJxOiR9f+ukWF7JQtUaCUagZ2iAVMk1l9kFU4HCIPQ=; b=Iay2pLjcSuMlKJ EtqQVaSYr5+XAbZLTcBqrlqb2wiBjOmAcTBjUh0Lgg5BNaS/a+kwigQfQ2nok9NCnH1Ot6Iu0NDtw okAzKjXOcpZV+EPaFPU2yG+w6UMj1ECGxpMdeP59SxOlv6IhwDmFir3hzto25/pI7YrIURhP9D+QR /l2kUibyXqwquoO/0ls9MCI6xcI4HAgS2CT9i3fIPgFkMbPo4DRdAowc37TDrm08VlhuDKDW7OAja oqYA0nqpifQwlZSnb/t82UI0/W8iqqNIbBj5KVtQpDwaboEbq9TQMmgYJN/2N9flELDdMV9TFJ77+ wW+j6XI5tBCPCIjPRupw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qmFXe-008CVH-2E; Fri, 29 Sep 2023 15:36:34 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qloqw-0034kt-2S; Thu, 28 Sep 2023 11:06:47 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by ams.source.kernel.org (Postfix) with ESMTP id 0FB05B81BBB; Thu, 28 Sep 2023 11:06:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EF540C4160E; Thu, 28 Sep 2023 11:06:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695899200; bh=KcEb7Ur9VnfCswhdPaiHlW6A+8Un/231FkVSjN0vVmY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LIvJMQV9gV0uW8yl32NSd4yb2599TLMQSz3pZ7A8RvzTMK+/pPweiGT83QuRE6Ap1 RJ4tHrEtdELF24JEcAXBlbRxCLgD4fFKMvaVxDYJKFUi3JGR08fTlWqCpRUQLEU1eL PLdctIni/gLihdwFGrq6SVBHRpLIcoURicUh3JGLAt4t51ztAQPhDNYHtf1HHGTOrp XAB3XmZIrDME0ElXf57Dd8FtxB0Uiap7czp3ZlR45ObMUeHSnxd6fREH7G/U4RgfCh xv1/nw1L9/w3ErqEe74BXlZqblyXh/mVR1R03Etd6mg/RnXyu8EBj+lRYoEkTAJg+R yYzEQo7GNicAA== 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=20Hj=C3=B8nnev=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=20J=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 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 Subject: [PATCH 87/87] fs: move i_blocks up a few places in struct inode Date: Thu, 28 Sep 2023 07:05:54 -0400 Message-ID: <20230928110554.34758-3-jlayton@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230928110554.34758-1-jlayton@kernel.org> References: <20230928110554.34758-1-jlayton@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230928_040643_133315_58DCC698 X-CRM114-Status: GOOD ( 17.43 ) X-Mailman-Approved-At: Fri, 29 Sep 2023 08:36:32 -0700 X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-um" Errors-To: linux-um-bounces+linux-um=archiver.kernel.org@lists.infradead.org The recent change to use discrete integers instead of struct timespec64 in struct inode shaved 8 bytes off of it, but it also moves the i_lock into the previous cacheline, away from the fields that it protects. Move i_blocks up above the i_lock, which moves the new 4 byte hole to just after the timestamps, without changing the size of the structure. 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 de902ff2938b..3e0fe0f52e7c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -677,11 +677,11 @@ struct inode { u32 i_atime_nsec; u32 i_mtime_nsec; u32 i_ctime_nsec; + blkcnt_t i_blocks; spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ unsigned short i_bytes; u8 i_blkbits; u8 i_write_hint; - blkcnt_t i_blocks; #ifdef __NEED_I_SIZE_ORDERED seqcount_t i_size_seqcount; -- 2.41.0 _______________________________________________ linux-um mailing list linux-um@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-um