[GIT PULL 04/16 for v7.2] vfs directory delegations

[Christian Brauner]

Hey Linus,

/* Summary */

This contains the VFS prerequisites for supporting directory
delegations in nfsd via CB_NOTIFY callbacks.

The filelock core gains support for ignoring delegation breaks for
directory change events together with an inode_lease_ignore_mask()
helper, and fsnotify gains fsnotify_modify_mark_mask() and a
FSNOTIFY_EVENT_RENAME data type. With this in place nfsd can request
delegations on directories and set up inotify watches to trigger
sending CB_NOTIFY events to clients instead of having every directory
change break the delegation. New tracepoints are added to fsnotify()
and to the start of break_lease(), and trace_break_lease_block() is
passed the currently blocking lease instead of the new one.

A follow-up fix moves the LEASE_BREAK_* flags out of
#ifdef CONFIG_FILE_LOCKING to fix the build for CONFIG_FILE_LOCKING=n
configurations.

Note that the nfsd tree is based on a merge of this branch so these
changes may also reach you through the nfsd pull request.

/* Testing */

gcc (Debian 14.2.0-19) 14.2.0
Debian clang version 19.1.7 (3+b1)

No build failures or warnings were observed.

/* Conflicts */

Merge conflicts with mainline
=============================

No known conflicts.

Merge conflicts with other trees
================================

The following changes since commit 254f49634ee16a731174d2ae34bc50bd5f45e731:

  Linux 7.1-rc1 (2026-04-26 14:19:00 -0700)

are available in the Git repository at:

  git@xxxxxxxxxxxxxxxxxxx:pub/scm/linux/kernel/git/vfs/vfs tags/vfs-7.2-rc1.directory.delegations

for you to fetch changes up to 246bc86d0fd891273a8502314f158eab23af823c:

  filelock: move LEASE_BREAK_* flags out of #ifdef CONFIG_FILE_LOCKING (2026-05-16 17:05:52 +0200)

----------------------------------------------------------------
vfs-7.2-rc1.directory.delegations

Please consider pulling these changes from the signed vfs-7.2-rc1.directory.delegations tag.

Thanks!
Christian

----------------------------------------------------------------
Christian Brauner (1):
      Merge patch series "VFS changes for nfsd CB_NOTIFY callbacks in directory delegations"

Jeff Layton (8):
      filelock: pass current blocking lease to trace_break_lease_block() rather than "new_fl"
      filelock: add support for ignoring deleg breaks for dir change events
      filelock: add a tracepoint to start of break_lease()
      filelock: add an inode_lease_ignore_mask helper
      fsnotify: new tracepoint in fsnotify()
      fsnotify: add fsnotify_modify_mark_mask()
      fsnotify: add FSNOTIFY_EVENT_RENAME data type
      filelock: move LEASE_BREAK_* flags out of #ifdef CONFIG_FILE_LOCKING

 fs/attr.c                        |   2 +-
 fs/locks.c                       | 118 ++++++++++++++++++++++++++++++---------
 fs/namei.c                       |  31 +++++-----
 fs/notify/fsnotify.c             |   5 ++
 fs/notify/mark.c                 |  29 ++++++++++
 fs/posix_acl.c                   |   4 +-
 fs/xattr.c                       |   4 +-
 include/linux/filelock.h         |  66 ++++++++++++++--------
 include/linux/fsnotify.h         |   8 ++-
 include/linux/fsnotify_backend.h |  21 +++++++
 include/trace/events/filelock.h  |  38 ++++++++++++-
 include/trace/events/fsnotify.h  |  51 +++++++++++++++++
 include/trace/misc/fsnotify.h    |  35 ++++++++++++
 13 files changed, 341 insertions(+), 71 deletions(-)
 create mode 100644 include/trace/events/fsnotify.h
 create mode 100644 include/trace/misc/fsnotify.h