linux-kernel - [GIT PULL] ext4 updates for 6.18-rc1

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Message-ID: <20251001025400.GA333371@mit.edu>
Date: Tue, 30 Sep 2025 22:54:00 -0400
From: "Theodore Ts'o" <tytso@....edu>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Linux Kernel Developers List <linux-kernel@...r.kernel.org>,
        Ext4 Developers List <linux-ext4@...r.kernel.org>
Subject: [GIT PULL] ext4 updates for 6.18-rc1

The following changes since commit b320789d6883cc00ac78ce83bccbfe7ed58afcf0:

  Linux 6.17-rc4 (2025-08-31 15:33:07 -0700)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git tags/ext4_for_linus-6.18-rc1

for you to fetch changes up to acf943e9768ec9d9be80982ca0ebc4bfd6b7631e:

  ext4: fix checks for orphan inodes (2025-09-26 08:36:08 -0400)

----------------------------------------------------------------
New ext4 features:

  * Add support so tune2fs can modify/update the superblock using an
    ioctl, without needing write access to the block device.
  * Add support for 32-bit reserved uid's and gid's.

Bug fixes:

  * Fix potential warnings and other failures caused by corrupted / fuzzed
    file systems.
  * Fail unaligned direct I/O write with EINVAL instead of silently
    falling back to buffered I/O
  * Correectly handle fsmap queries for metadata mappings
  * Avoid journal stalls caused by writeback throttling
  * Add some missing GFP_NOFAIL flags to avoid potential deadlocks
    under extremem memory pressure

Cleanups:

  * Remove obsolete EXT3 Kconfigs

----------------------------------------------------------------
Ahmet Eray Karadag (1):
      ext4: guard against EA inode refcount underflow in xattr update

Baokun Li (2):
      ext4: add ext4_sb_bread_nofail() helper function for ext4_free_branches()
      ext4: fix potential null deref in ext4_mb_init()

Deepanshu Kartikey (1):
      ext4: validate ea_ino and size in check_xattrs

Jan Kara (3):
      ext4: fail unaligned direct IO write with EINVAL
      ext4: verify orphan file size is not too big
      ext4: fix checks for orphan inodes

Julian Sun (2):
      jbd2: increase IO priority of checkpoint
      ext4: increase IO priority of fastcommit

Lukas Bulwahn (1):
      ext4: remove obsolete EXT3 config options

Ojaswin Mujoo (1):
      ext4: correctly handle queries for metadata mappings

Theodore Ts'o (3):
      ext4: avoid potential buffer over-read in parse_apply_sb_mount_options()
      ext4: add support for 32-bit default reserved uid and gid values
      ext4: implemet new ioctls to set and get superblock parameters

Xichao Zhao (1):
      ext4: replace min/max nesting with clamp()

Yongjian Sun (1):
      ext4: increase i_disksize to offset + len in ext4_update_disksize_before_punch()

Zhang Yi (1):
      ext4: fix an off-by-one issue during moving extents

chuguangqing (1):
      fs: ext4: change GFP_KERNEL to GFP_NOFS to avoid deadlock

 fs/ext4/Kconfig           |  27 -------
 fs/ext4/ext4.h            |  28 ++++++-
 fs/ext4/fast_commit.c     |   2 +-
 fs/ext4/file.c            |   2 +-
 fs/ext4/fsmap.c           |  14 ++--
 fs/ext4/indirect.c        |   2 +-
 fs/ext4/inode.c           |  47 +++---------
 fs/ext4/ioctl.c           | 312 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 fs/ext4/mballoc.c         |  10 +++
 fs/ext4/mmp.c             |   6 +-
 fs/ext4/move_extent.c     |   2 +-
 fs/ext4/orphan.c          |  19 +++--
 fs/ext4/super.c           |  38 +++++-----
 fs/ext4/xattr.c           |  21 ++++--
 fs/jbd2/checkpoint.c      |   2 +-
 include/uapi/linux/ext4.h |  53 +++++++++++++
 16 files changed, 467 insertions(+), 118 deletions(-)