| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20230928110554.34758-3-jlayton@kernel.org>
Date: Thu, 28 Sep 2023 07:05:54 -0400
From: Jeff Layton <jlayton@...nel.org>
To: Alexander Viro <viro@...iv.linux.org.uk>,
Christian Brauner <brauner@...nel.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
David Sterba <dsterba@...e.cz>,
Amir Goldstein <amir73il@...il.com>,
Theodore Ts'o <tytso@....edu>,
Eric Biederman <ebiederm@...ssion.com>,
Kees Cook <keescook@...omium.org>, Jeremy Kerr <jk@...abs.org>,
Arnd Bergmann <arnd@...db.de>,
Michael Ellerman <mpe@...erman.id.au>,
Nicholas Piggin <npiggin@...il.com>,
Christophe Leroy <christophe.leroy@...roup.eu>,
Heiko Carstens <hca@...ux.ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Alexander Gordeev <agordeev@...ux.ibm.com>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Sven Schnelle <svens@...ux.ibm.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Arve Hjønnevåg <arve@...roid.com>,
Todd Kjos <tkjos@...roid.com>,
Martijn Coenen <maco@...roid.com>,
Joel Fernandes <joel@...lfernandes.org>,
Carlos Llamas <cmllamas@...gle.com>,
Suren Baghdasaryan <surenb@...gle.com>,
Mattia Dongili <malattia@...ux.it>,
Dennis Dalessandro <dennis.dalessandro@...nelisnetworks.com>,
Jason Gunthorpe <jgg@...pe.ca>,
Leon Romanovsky <leon@...nel.org>,
Brad Warrum <bwarrum@...ux.ibm.com>,
Ritu Agarwal <rituagar@...ux.ibm.com>,
Hans de Goede <hdegoede@...hat.com>,
Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
Mark Gross <markgross@...nel.org>,
Jiri Slaby <jirislaby@...nel.org>,
Eric Van Hensbergen <ericvh@...nel.org>,
Latchesar Ionkov <lucho@...kov.net>,
Dominique Martinet <asmadeus@...ewreck.org>,
Christian Schoenebeck <linux_oss@...debyte.com>,
David Sterba <dsterba@...e.com>,
David Howells <dhowells@...hat.com>,
Marc Dionne <marc.dionne@...istor.com>,
Ian Kent <raven@...maw.net>,
Luis de Bethencourt <luisbg@...nel.org>,
Salah Triki <salah.triki@...il.com>,
"Tigran A. Aivazian" <aivazian.tigran@...il.com>,
Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>,
Xiubo Li <xiubli@...hat.com>,
Ilya Dryomov <idryomov@...il.com>,
Jan Harkes <jaharkes@...cmu.edu>, coda@...cmu.edu,
Joel Becker <jlbec@...lplan.org>,
Christoph Hellwig <hch@....de>,
Nicolas Pitre <nico@...xnic.net>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Ard Biesheuvel <ardb@...nel.org>, Gao Xiang <xiang@...nel.org>,
Chao Yu <chao@...nel.org>, Yue Hu <huyue2@...lpad.com>,
Jeffle Xu <jefflexu@...ux.alibaba.com>,
Namjae Jeon <linkinjeon@...nel.org>,
Sungjong Seo <sj1557.seo@...sung.com>,
Jan Kara <jack@...e.com>,
Andreas Dilger <adilger.kernel@...ger.ca>,
Jaegeuk Kim <jaegeuk@...nel.org>,
OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
Christoph Hellwig <hch@...radead.org>,
Miklos Szeredi <miklos@...redi.hu>,
Bob Peterson <rpeterso@...hat.com>,
Andreas Gruenbacher <agruenba@...hat.com>,
Richard Weinberger <richard@....at>,
Anton Ivanov <anton.ivanov@...bridgegreys.com>,
Johannes Berg <johannes@...solutions.net>,
Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>,
Mike Kravetz <mike.kravetz@...cle.com>,
Muchun Song <muchun.song@...ux.dev>, Jan Kara <jack@...e.cz>,
David Woodhouse <dwmw2@...radead.org>,
Dave Kleikamp <shaggy@...nel.org>, Tejun Heo <tj@...nel.org>,
Trond Myklebust <trond.myklebust@...merspace.com>,
Anna Schumaker <anna@...nel.org>,
Chuck Lever <chuck.lever@...cle.com>,
Neil Brown <neilb@...e.de>,
Olga Kornievskaia <kolga@...app.com>,
Dai Ngo <Dai.Ngo@...cle.com>, Tom Talpey <tom@...pey.com>,
Ryusuke Konishi <konishi.ryusuke@...il.com>,
Anton Altaparmakov <anton@...era.com>,
Konstantin Komarov <almaz.alexandrovich@...agon-software.com>,
Mark Fasheh <mark@...heh.com>,
Joseph Qi <joseph.qi@...ux.alibaba.com>,
Bob Copeland <me@...copeland.com>,
Mike Marshall <hubcap@...ibond.com>,
Martin Brandenburg <martin@...ibond.com>,
Luis Chamberlain <mcgrof@...nel.org>,
Iurii Zaikin <yzaikin@...gle.com>,
Tony Luck <tony.luck@...el.com>,
"Guilherme G. Piccoli" <gpiccoli@...lia.com>,
Anders Larsen <al@...rsen.net>,
Steve French <sfrench@...ba.org>,
Paulo Alcantara <pc@...guebit.com>,
Ronnie Sahlberg <lsahlber@...hat.com>,
Shyam Prasad N <sprasad@...rosoft.com>,
Sergey Senozhatsky <senozhatsky@...omium.org>,
Phillip Lougher <phillip@...ashfs.org.uk>,
Steven Rostedt <rostedt@...dmis.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Evgeniy Dushistov <dushistov@...l.ru>,
Chandan Babu R <chandan.babu@...cle.com>,
"Darrick J. Wong" <djwong@...nel.org>,
Damien Le Moal <dlemoal@...nel.org>,
Naohiro Aota <naohiro.aota@....com>,
Johannes Thumshirn <jth@...nel.org>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Andrii Nakryiko <andrii@...nel.org>,
Martin KaFai Lau <martin.lau@...ux.dev>,
Song Liu <song@...nel.org>,
Yonghong Song <yonghong.song@...ux.dev>,
John Fastabend <john.fastabend@...il.com>,
KP Singh <kpsingh@...nel.org>,
Stanislav Fomichev <sdf@...gle.com>,
Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
Hugh Dickins <hughd@...gle.com>,
Andrew Morton <akpm@...ux-foundation.org>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
John Johansen <john.johansen@...onical.com>,
Paul Moore <paul@...l-moore.com>,
James Morris <jmorris@...ei.org>,
"Serge E. Hallyn" <serge@...lyn.com>,
Stephen Smalley <stephen.smalley.work@...il.com>,
Eric Paris <eparis@...isplace.org>
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-mm@...ck.org, linuxppc-dev@...ts.ozlabs.org,
linux-s390@...r.kernel.org, platform-driver-x86@...r.kernel.org,
linux-rdma@...r.kernel.org, linux-serial@...r.kernel.org,
linux-usb@...r.kernel.org, v9fs@...ts.linux.dev,
linux-afs@...ts.infradead.org, autofs@...r.kernel.org,
linux-btrfs@...r.kernel.org, ceph-devel@...r.kernel.org,
codalist@...a.cs.cmu.edu, linux-efi@...r.kernel.org,
linux-erofs@...ts.ozlabs.org, linux-ext4@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net, gfs2@...ts.linux.dev,
linux-um@...ts.infradead.org, linux-mtd@...ts.infradead.org,
jfs-discussion@...ts.sourceforge.net, linux-nfs@...r.kernel.org,
linux-nilfs@...r.kernel.org, linux-ntfs-dev@...ts.sourceforge.net,
ntfs3@...ts.linux.dev, ocfs2-devel@...ts.linux.dev,
linux-karma-devel@...ts.sourceforge.net, devel@...ts.orangefs.org,
linux-unionfs@...r.kernel.org, linux-hardening@...r.kernel.org,
reiserfs-devel@...r.kernel.org, linux-cifs@...r.kernel.org,
samba-technical@...ts.samba.org,
linux-trace-kernel@...r.kernel.org, linux-xfs@...r.kernel.org,
bpf@...r.kernel.org, netdev@...r.kernel.org,
apparmor@...ts.ubuntu.com, linux-security-module@...r.kernel.org,
selinux@...r.kernel.org
Subject: [PATCH 87/87] fs: move i_blocks up a few places in struct inode
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 <jlayton@...nel.org>
---
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
Powered by blists - more mailing lists