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Message-ID: <20230928110300.32891-1-jlayton@kernel.org>
Date: Thu, 28 Sep 2023 07:02:59 -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>,
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Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
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Ian Kent <raven@...maw.net>,
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Salah Triki <salah.triki@...il.com>,
"Tigran A. Aivazian" <aivazian.tigran@...il.com>,
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Xiubo Li <xiubli@...hat.com>,
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Joel Becker <jlbec@...lplan.org>,
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Nicolas Pitre <nico@...xnic.net>,
"Rafael J. Wysocki" <rafael@...nel.org>,
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OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
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Miklos Szeredi <miklos@...redi.hu>,
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Johannes Berg <johannes@...solutions.net>,
Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>,
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Muchun Song <muchun.song@...ux.dev>, Jan Kara <jack@...e.cz>,
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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>,
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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>,
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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>,
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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 00/87] fs: new accessor methods for atime and mtime
While working on the multigrain timestamp changes, Linus suggested
adding some similar wrappers for accessing the atime and mtime that we
have for the ctime. With that, we could then move to using discrete
integers instead of timespec64 in struct inode, and shrink it.
Linus suggested using macros for the new accessors, but the existing
ctime wrappers were static inlines and since there are only 3 different
timestamps, I didn't see that trying to fiddle with macros would gain us
anything.
The first patches start with some new infrastructure, and then we move
to converting different subsystems to use it. The second to last patch
makes the conversion to discrete integers, which shaves 8 bytes off of
struct inode on my x86_64 kernel. The last patch reshuffles things a
bit more, to keep the i_lock in the same cacheline as the fields it
protects (at least on x86_64).
About 75% of this conversion was done with coccinelle, with the rest
done by hand with vim.
Jeff Layton (87):
fs: new accessor methods for atime and mtime
fs: convert core infrastructure to new {a,m}time accessors
arch/powerpc/platforms/cell/spufs: convert to new inode {a,m}time
accessors
arch/s390/hypfs: convert to new inode {a,m}time accessors
drivers/android: convert to new inode {a,m}time accessors
drivers/char: convert to new inode {a,m}time accessors
drivers/infiniband/hw/qib: convert to new inode {a,m}time accessors
drivers/misc/ibmasm: convert to new inode {a,m}time accessors
drivers/misc: convert to new inode {a,m}time accessors
drivers/platform/x86: convert to new inode {a,m}time accessors
drivers/tty: convert to new inode {a,m}time accessors
drivers/usb/core: convert to new inode {a,m}time accessors
drivers/usb/gadget/function: convert to new inode {a,m}time accessors
drivers/usb/gadget/legacy: convert to new inode {a,m}time accessors
fs/9p: convert to new inode {a,m}time accessors
fs/adfs: convert to new inode {a,m}time accessors
fs/affs: convert to new inode {a,m}time accessors
fs/afs: convert to new inode {a,m}time accessors
fs/autofs: convert to new inode {a,m}time accessors
fs/befs: convert to new inode {a,m}time accessors
fs/bfs: convert to new inode {a,m}time accessors
fs/btrfs: convert to new inode {a,m}time accessors
fs/ceph: convert to new inode {a,m}time accessors
fs/coda: convert to new inode {a,m}time accessors
fs/configfs: convert to new inode {a,m}time accessors
fs/cramfs: convert to new inode {a,m}time accessors
fs/debugfs: convert to new inode {a,m}time accessors
fs/devpts: convert to new inode {a,m}time accessors
fs/efivarfs: convert to new inode {a,m}time accessors
fs/efs: convert to new inode {a,m}time accessors
fs/erofs: convert to new inode {a,m}time accessors
fs/exfat: convert to new inode {a,m}time accessors
fs/ext2: convert to new inode {a,m}time accessors
fs/ext4: convert to new inode {a,m}time accessors
fs/f2fs: convert to new inode {a,m}time accessors
fs/fat: convert to new inode {a,m}time accessors
fs/freevxfs: convert to new inode {a,m}time accessors
fs/fuse: convert to new inode {a,m}time accessors
fs/gfs2: convert to new inode {a,m}time accessors
fs/hfs: convert to new inode {a,m}time accessors
fs/hfsplus: convert to new inode {a,m}time accessors
fs/hostfs: convert to new inode {a,m}time accessors
fs/hpfs: convert to new inode {a,m}time accessors
fs/hugetlbfs: convert to new inode {a,m}time accessors
fs/isofs: convert to new inode {a,m}time accessors
fs/jffs2: convert to new inode {a,m}time accessors
fs/jfs: convert to new inode {a,m}time accessors
fs/kernfs: convert to new inode {a,m}time accessors
fs/minix: convert to new inode {a,m}time accessors
fs/nfs: convert to new inode {a,m}time accessors
fs/nfsd: convert to new inode {a,m}time accessors
fs/nilfs2: convert to new inode {a,m}time accessors
fs/ntfs: convert to new inode {a,m}time accessors
fs/ntfs3: convert to new inode {a,m}time accessors
fs/ocfs2: convert to new inode {a,m}time accessors
fs/omfs: convert to new inode {a,m}time accessors
fs/openpromfs: convert to new inode {a,m}time accessors
fs/orangefs: convert to new inode {a,m}time accessors
fs/overlayfs: convert to new inode {a,m}time accessors
fs/proc: convert to new inode {a,m}time accessors
fs/pstore: convert to new inode {a,m}time accessors
fs/qnx4: convert to new inode {a,m}time accessors
fs/qnx6: convert to new inode {a,m}time accessors
fs/ramfs: convert to new inode {a,m}time accessors
fs/reiserfs: convert to new inode {a,m}time accessors
fs/romfs: convert to new inode {a,m}time accessors
fs/smb/client: convert to new inode {a,m}time accessors
fs/smb/server: convert to new inode {a,m}time accessors
fs/squashfs: convert to new inode {a,m}time accessors
fs/sysv: convert to new inode {a,m}time accessors
fs/tracefs: convert to new inode {a,m}time accessors
fs/ubifs: convert to new inode {a,m}time accessors
fs/udf: convert to new inode {a,m}time accessors
fs/ufs: convert to new inode {a,m}time accessors
fs/vboxsf: convert to new inode {a,m}time accessors
fs/xfs: convert to new inode {a,m}time accessors
fs/zonefs: convert to new inode {a,m}time accessors
ipc: convert to new inode {a,m}time accessors
kernel/bpf: convert to new inode {a,m}time accessors
mm: convert to new inode {a,m}time accessors
net/sunrpc: convert to new inode {a,m}time accessors
security/apparmor: convert to new inode {a,m}time accessors
security/selinux: convert to new inode {a,m}time accessors
security: convert to new inode {a,m}time accessors
fs: rename i_atime and i_mtime fields to __i_atime and __i_mtime
fs: switch timespec64 fields in inode to discrete integers
fs: move i_blocks up a few places in struct inode
arch/powerpc/platforms/cell/spufs/inode.c | 2 +-
arch/s390/hypfs/inode.c | 4 +-
drivers/android/binderfs.c | 8 +--
drivers/char/sonypi.c | 2 +-
drivers/infiniband/hw/qib/qib_fs.c | 4 +-
drivers/misc/ibmasm/ibmasmfs.c | 2 +-
drivers/misc/ibmvmc.c | 2 +-
drivers/platform/x86/sony-laptop.c | 2 +-
drivers/tty/tty_io.c | 10 +++-
drivers/usb/core/devio.c | 26 ++++++---
drivers/usb/gadget/function/f_fs.c | 4 +-
drivers/usb/gadget/legacy/inode.c | 2 +-
fs/9p/vfs_inode.c | 6 +-
fs/9p/vfs_inode_dotl.c | 16 +++---
fs/adfs/inode.c | 13 +++--
fs/affs/amigaffs.c | 4 +-
fs/affs/inode.c | 17 +++---
fs/afs/dynroot.c | 2 +-
fs/afs/inode.c | 8 +--
fs/afs/write.c | 2 +-
fs/attr.c | 4 +-
fs/autofs/inode.c | 2 +-
fs/autofs/root.c | 6 +-
fs/bad_inode.c | 2 +-
fs/befs/linuxvfs.c | 10 ++--
fs/bfs/dir.c | 9 +--
fs/bfs/inode.c | 10 ++--
fs/binfmt_misc.c | 2 +-
fs/btrfs/delayed-inode.c | 16 +++---
fs/btrfs/file.c | 18 +++---
fs/btrfs/inode.c | 39 ++++++-------
fs/btrfs/reflink.c | 2 +-
fs/btrfs/transaction.c | 3 +-
fs/btrfs/tree-log.c | 8 +--
fs/ceph/addr.c | 10 ++--
fs/ceph/caps.c | 4 +-
fs/ceph/file.c | 2 +-
fs/ceph/inode.c | 60 +++++++++++---------
fs/ceph/mds_client.c | 8 ++-
fs/ceph/snap.c | 4 +-
fs/coda/coda_linux.c | 6 +-
fs/coda/dir.c | 2 +-
fs/coda/file.c | 2 +-
fs/configfs/inode.c | 8 +--
fs/cramfs/inode.c | 4 +-
fs/debugfs/inode.c | 2 +-
fs/devpts/inode.c | 6 +-
fs/efivarfs/file.c | 2 +-
fs/efivarfs/inode.c | 2 +-
fs/efs/inode.c | 5 +-
fs/erofs/inode.c | 3 +-
fs/exfat/exfat_fs.h | 1 +
fs/exfat/file.c | 7 +--
fs/exfat/inode.c | 31 ++++++-----
fs/exfat/misc.c | 8 +++
fs/exfat/namei.c | 31 ++++++-----
fs/exfat/super.c | 4 +-
fs/ext2/dir.c | 6 +-
fs/ext2/ialloc.c | 2 +-
fs/ext2/inode.c | 11 ++--
fs/ext2/super.c | 2 +-
fs/ext4/ext4.h | 20 +++++--
fs/ext4/extents.c | 11 ++--
fs/ext4/ialloc.c | 4 +-
fs/ext4/inline.c | 4 +-
fs/ext4/inode.c | 19 ++++---
fs/ext4/ioctl.c | 13 ++++-
fs/ext4/namei.c | 10 ++--
fs/ext4/super.c | 2 +-
fs/ext4/xattr.c | 6 +-
fs/f2fs/dir.c | 6 +-
fs/f2fs/f2fs.h | 10 ++--
fs/f2fs/file.c | 14 ++---
fs/f2fs/inline.c | 2 +-
fs/f2fs/inode.c | 20 +++----
fs/f2fs/namei.c | 4 +-
fs/f2fs/recovery.c | 8 +--
fs/f2fs/super.c | 2 +-
fs/fat/inode.c | 25 ++++++---
fs/fat/misc.c | 6 +-
fs/freevxfs/vxfs_inode.c | 6 +-
fs/fuse/control.c | 2 +-
fs/fuse/dir.c | 6 +-
fs/fuse/inode.c | 25 ++++-----
fs/fuse/readdir.c | 6 +-
fs/gfs2/bmap.c | 10 ++--
fs/gfs2/dir.c | 10 ++--
fs/gfs2/glops.c | 11 ++--
fs/gfs2/inode.c | 7 ++-
fs/gfs2/quota.c | 2 +-
fs/gfs2/super.c | 8 +--
fs/hfs/catalog.c | 8 +--
fs/hfs/inode.c | 16 +++---
fs/hfs/sysdep.c | 10 ++--
fs/hfsplus/catalog.c | 8 +--
fs/hfsplus/inode.c | 22 ++++----
fs/hostfs/hostfs_kern.c | 12 ++--
fs/hpfs/dir.c | 10 ++--
fs/hpfs/inode.c | 12 ++--
fs/hpfs/namei.c | 20 +++----
fs/hpfs/super.c | 10 ++--
fs/hugetlbfs/inode.c | 10 ++--
fs/inode.c | 35 +++++++-----
fs/isofs/inode.c | 4 +-
fs/isofs/rock.c | 18 +++---
fs/jffs2/dir.c | 35 +++++++-----
fs/jffs2/file.c | 4 +-
fs/jffs2/fs.c | 20 +++----
fs/jffs2/os-linux.h | 4 +-
fs/jfs/inode.c | 2 +-
fs/jfs/jfs_imap.c | 16 +++---
fs/jfs/jfs_inode.c | 2 +-
fs/jfs/namei.c | 20 ++++---
fs/jfs/super.c | 2 +-
fs/kernfs/inode.c | 6 +-
fs/libfs.c | 41 ++++++++++----
fs/minix/bitmap.c | 2 +-
fs/minix/dir.c | 6 +-
fs/minix/inode.c | 15 +++--
fs/minix/itree_common.c | 2 +-
fs/nfs/callback_proc.c | 2 +-
fs/nfs/fscache.h | 4 +-
fs/nfs/inode.c | 30 +++++-----
fs/nfsd/blocklayout.c | 3 +-
fs/nfsd/nfs3proc.c | 4 +-
fs/nfsd/nfs4proc.c | 8 +--
fs/nfsd/nfsctl.c | 2 +-
fs/nilfs2/dir.c | 6 +-
fs/nilfs2/inode.c | 16 +++---
fs/nsfs.c | 2 +-
fs/ntfs/inode.c | 25 +++++----
fs/ntfs/mft.c | 2 +-
fs/ntfs3/file.c | 6 +-
fs/ntfs3/frecord.c | 11 ++--
fs/ntfs3/inode.c | 22 +++++---
fs/ntfs3/namei.c | 4 +-
fs/ocfs2/alloc.c | 2 +-
fs/ocfs2/aops.c | 6 +-
fs/ocfs2/dir.c | 5 +-
fs/ocfs2/dlmfs/dlmfs.c | 4 +-
fs/ocfs2/dlmglue.c | 29 +++++-----
fs/ocfs2/file.c | 26 +++++----
fs/ocfs2/inode.c | 24 ++++----
fs/ocfs2/namei.c | 8 +--
fs/ocfs2/refcounttree.c | 4 +-
fs/omfs/inode.c | 8 +--
fs/openpromfs/inode.c | 4 +-
fs/orangefs/orangefs-utils.c | 16 +++---
fs/overlayfs/file.c | 9 ++-
fs/overlayfs/inode.c | 3 +-
fs/overlayfs/util.c | 4 +-
fs/pipe.c | 2 +-
fs/proc/base.c | 2 +-
fs/proc/inode.c | 2 +-
fs/proc/proc_sysctl.c | 2 +-
fs/proc/self.c | 2 +-
fs/proc/thread_self.c | 2 +-
fs/pstore/inode.c | 5 +-
fs/qnx4/inode.c | 6 +-
fs/qnx6/inode.c | 6 +-
fs/ramfs/inode.c | 7 ++-
fs/reiserfs/inode.c | 22 +++-----
fs/reiserfs/namei.c | 8 +--
fs/reiserfs/stree.c | 5 +-
fs/reiserfs/super.c | 2 +-
fs/romfs/super.c | 3 +-
fs/smb/client/file.c | 18 +++---
fs/smb/client/fscache.h | 6 +-
fs/smb/client/inode.c | 17 +++---
fs/smb/client/smb2ops.c | 6 +-
fs/smb/server/smb2pdu.c | 8 +--
fs/squashfs/inode.c | 6 +-
fs/stack.c | 4 +-
fs/stat.c | 4 +-
fs/sysv/dir.c | 6 +-
fs/sysv/ialloc.c | 2 +-
fs/sysv/inode.c | 10 ++--
fs/sysv/itree.c | 2 +-
fs/tracefs/inode.c | 2 +-
fs/ubifs/debug.c | 8 +--
fs/ubifs/dir.c | 23 +++++---
fs/ubifs/file.c | 16 +++---
fs/ubifs/journal.c | 8 +--
fs/ubifs/super.c | 8 +--
fs/udf/ialloc.c | 4 +-
fs/udf/inode.c | 38 +++++++------
fs/udf/namei.c | 16 +++---
fs/ufs/dir.c | 6 +-
fs/ufs/ialloc.c | 2 +-
fs/ufs/inode.c | 36 +++++++-----
fs/vboxsf/utils.c | 15 ++---
fs/xfs/libxfs/xfs_inode_buf.c | 10 ++--
fs/xfs/libxfs/xfs_rtbitmap.c | 6 +-
fs/xfs/libxfs/xfs_trans_inode.c | 2 +-
fs/xfs/xfs_bmap_util.c | 7 ++-
fs/xfs/xfs_inode.c | 4 +-
fs/xfs/xfs_inode_item.c | 4 +-
fs/xfs/xfs_iops.c | 8 +--
fs/xfs/xfs_itable.c | 8 +--
fs/xfs/xfs_rtalloc.c | 30 +++++-----
fs/zonefs/super.c | 10 ++--
include/linux/fs.h | 68 +++++++++++++++++++++--
include/linux/fs_stack.h | 6 +-
ipc/mqueue.c | 19 ++++---
kernel/bpf/inode.c | 5 +-
mm/shmem.c | 20 +++----
net/sunrpc/rpc_pipe.c | 2 +-
security/apparmor/apparmorfs.c | 7 ++-
security/apparmor/policy_unpack.c | 4 +-
security/inode.c | 2 +-
security/selinux/selinuxfs.c | 2 +-
211 files changed, 1115 insertions(+), 906 deletions(-)
--
2.41.0
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