linux-ext4 - [PATCH, RFC 0/3] Introduce new O_HOT and O

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1334863211-19504-1-git-send-email-tytso@mit.edu>
Date:	Thu, 19 Apr 2012 15:20:08 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	linux-fsdevel@...r.kernel.org
Cc:	Ext4 Developers List <linux-ext4@...r.kernel.org>,
	Theodore Ts'o <tytso@....edu>
Subject: [PATCH, RFC 0/3] Introduce new O_HOT and O_COLD flags

As I had brought up during one of the lightning talks at the Linux
Storage and Filesystem workshop, I am interested in introducing two new
open flags, O_HOT and O_COLD.  These flags are passed down to the
individual file system's inode operations' create function, and the file
system can use these flags as a hint regarding whether the file is
likely to be accessed frequently or not.

In the future I plan to do further work on how ext4 would use these
flags, but I want to first get the ability to pass these flags plumbed
into the VFS layer and the code points for O_HOT and O_COLD reserved.


Theodore Ts'o (3):
  fs: add new open flags O_HOT and O_COLD
  fs: propagate the open_flags structure down to the low-level fs's
    create()
  ext4: use the O_HOT and O_COLD open flags to influence inode
    allocation

 fs/9p/vfs_inode.c           |    2 +-
 fs/affs/affs.h              |    2 +-
 fs/affs/namei.c             |    3 ++-
 fs/bfs/dir.c                |    2 +-
 fs/btrfs/inode.c            |    3 ++-
 fs/cachefiles/namei.c       |    3 ++-
 fs/ceph/dir.c               |    2 +-
 fs/cifs/dir.c               |    2 +-
 fs/coda/dir.c               |    3 ++-
 fs/ecryptfs/inode.c         |    5 +++--
 fs/exofs/namei.c            |    2 +-
 fs/ext2/namei.c             |    4 +++-
 fs/ext3/namei.c             |    5 +++--
 fs/ext4/ext4.h              |    8 +++++++-
 fs/ext4/ialloc.c            |   33 +++++++++++++++++++++++++++------
 fs/ext4/migrate.c           |    2 +-
 fs/ext4/namei.c             |   17 ++++++++++++-----
 fs/fat/namei_msdos.c        |    2 +-
 fs/fat/namei_vfat.c         |    2 +-
 fs/fcntl.c                  |    5 +++--
 fs/fuse/dir.c               |    2 +-
 fs/gfs2/inode.c             |    3 ++-
 fs/hfs/dir.c                |    2 +-
 fs/hfsplus/dir.c            |    5 +++--
 fs/hostfs/hostfs_kern.c     |    2 +-
 fs/hugetlbfs/inode.c        |    4 +++-
 fs/internal.h               |    6 ------
 fs/jffs2/dir.c              |    5 +++--
 fs/jfs/namei.c              |    2 +-
 fs/logfs/dir.c              |    2 +-
 fs/minix/namei.c            |    2 +-
 fs/namei.c                  |    9 +++++----
 fs/ncpfs/dir.c              |    5 +++--
 fs/nfs/dir.c                |    6 ++++--
 fs/nfsd/vfs.c               |    4 ++--
 fs/nilfs2/namei.c           |    2 +-
 fs/ocfs2/namei.c            |    3 ++-
 fs/omfs/dir.c               |    2 +-
 fs/ramfs/inode.c            |    3 ++-
 fs/reiserfs/namei.c         |    5 +++--
 fs/sysv/namei.c             |    4 +++-
 fs/ubifs/dir.c              |    2 +-
 fs/udf/namei.c              |    2 +-
 fs/ufs/namei.c              |    2 +-
 fs/xfs/xfs_iops.c           |    3 ++-
 include/asm-generic/fcntl.h |    7 +++++++
 include/linux/fs.h          |   14 ++++++++++++--
 ipc/mqueue.c                |    2 +-
 48 files changed, 143 insertions(+), 74 deletions(-)

-- 
1.7.10.rc3

--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html