linux-kernel - [GIT PULL] overlayfs update for 6.16

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Message-ID: <CAJfpegvB3At5Mm54eDuNVspuNtkhoJwPH+HcOCWm7j-CSQ1jbw@mail.gmail.com>
Date: Thu, 5 Jun 2025 16:51:15 +0200
From: Miklos Szeredi <miklos@...redi.hu>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: overlayfs <linux-unionfs@...r.kernel.org>, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: [GIT PULL] overlayfs update for 6.16

Hi Linus,

Please pull from:

  git://git.kernel.org/pub/scm/linux/kernel/git/overlayfs/vfs.git
tags/ovl-update-6.16

- Fix a regression in getting the path of an open file (e.g.  in
/proc/PID/maps) for a nested overlayfs setup  (André Almeida)

- The above fix contains a cast to non-const, which is not actually
needed.  So add the necessary helpers postfixed with _c that allow the
cast to be removed (touches vfs files but only in trivial ways)

- Support data-only layers and verity in a user namespace
(unprivileged composefs use case)

- Fix a gcc warning (Kees)

- Cleanups

Thanks,
Miklos

---
André Almeida (1):
      ovl: Fix nested backing file paths

Kees Cook (1):
      ovl: Check for NULL d_inode() in ovl_dentry_upper()

Miklos Szeredi (4):
      ovl: make redirect/metacopy rejection consistent
      ovl: relax redirect/metacopy requirements for lower -> data redirect
      ovl: don't require "metacopy=on" for "verity"
      vfs: change 'struct file *' argument to 'const struct file *'
where possible

Thorsten Blum (4):
      ovl: Use str_on_off() helper in ovl_show_options()
      ovl: Replace offsetof() with struct_size() in ovl_cache_entry_new()
      ovl: Replace offsetof() with struct_size() in ovl_stack_free()
      ovl: Annotate struct ovl_entry with __counted_by()

---
 Documentation/filesystems/overlayfs.rst |  7 +++
 fs/file_table.c                         | 10 ++--
 fs/internal.h                           |  1 +
 fs/overlayfs/file.c                     |  4 +-
 fs/overlayfs/namei.c                    | 98 ++++++++++++++++++++-------------
 fs/overlayfs/ovl_entry.h                |  2 +-
 fs/overlayfs/params.c                   | 40 ++------------
 fs/overlayfs/readdir.c                  |  4 +-
 fs/overlayfs/util.c                     |  9 ++-
 include/linux/fs.h                      | 12 ++--
 10 files changed, 97 insertions(+), 90 deletions(-)