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  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]
Date:   Tue, 12 May 2020 22:43:15 -0700
        Andreas Dilger <>,
        "Theodore Y. Ts'o" <>, Jan Kara <>
Cc:     Ira Weiny <>,
        "Darrick J. Wong" <>,
        Dan Williams <>,
        Dave Chinner <>,
        Christoph Hellwig <>,,, Al Viro <>,
        Jeff Moyer <>,
Subject: [PATCH 0/9] Enable ext4 support for per-file/directory DAX operations

From: Ira Weiny <>

Enable the same per file DAX support in ext4 as was done for xfs.  This series
builds and depends on the V11 series for xfs.[1]

This passes the same xfstests test as XFS.

The only issue is that this modifies the old mount option parsing code rather
than waiting for the new parsing code to be finalized.

This series starts with 3 fixes which include making Verity and Encrypt truly
mutually exclusive from DAX.  I think these first 3 patches should be picked up
for 5.8 regardless of what is decided regarding the mount parsing.


Cc: "Darrick J. Wong" <>
Cc: Dan Williams <>
Cc: Dave Chinner <>
Cc: Christoph Hellwig <>
Cc: "Theodore Y. Ts'o" <>
Cc: Jan Kara <>

Ira Weiny (9):
  fs/ext4: Narrow scope of DAX check in setflags
  fs/ext4: Disallow verity if inode is DAX
  fs/ext4: Disallow encryption if inode is DAX
  fs/ext4: Update ext4_should_use_dax()
  fs/ext4: Only change S_DAX on inode load
  fs/ext4: Make DAX mount option a tri-state
  fs/ext4: Introduce DAX inode flag
  Documentation/dax: Update DAX enablement for ext4

 Documentation/filesystems/dax.txt         |  6 +-
 Documentation/filesystems/ext4/verity.rst |  7 +++
 Documentation/filesystems/fscrypt.rst     |  4 +-
 fs/ext4/ext4.h                            | 20 ++++---
 fs/ext4/ialloc.c                          |  2 +-
 fs/ext4/inode.c                           | 27 +++++++--
 fs/ext4/ioctl.c                           | 32 +++++++++--
 fs/ext4/super.c                           | 67 +++++++++++++++--------
 fs/ext4/verity.c                          |  5 +-
 9 files changed, 125 insertions(+), 45 deletions(-)


Powered by blists - more mailing lists