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From: Miklos Szeredi <miklos@szeredi.hu>
Date: Thu, 14 Mar 2024 16:40:50 +0100
Message-ID: <CAJfpegsZoLMfcpBXBPr7wdAnuXfAYUZYyinru3jrOWWEz7DJPQ@mail.gmail.com>
Subject: [GIT PULL] fuse update for 6.9
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
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Hi Linus,

Please pull from:

  git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git
tags/fuse-update-6.9

- Add passthrough mode for regular file I/O.  This allows performing
read and write (also via memory maps) on a backing file without
incurring the overhead of roundtrips to userspace.  For now this is
only allowed to privileged servers, but this limitation will go away
in the future.  (Amir Goldstein)

- Fix interaction of direct I/O mode with memory maps (Bernd Schubert)

- Export filesystem tags through sysfs for virtiofs (Stefan Hajnoczi)

- Allow resending queued requests for server crash recovery (Zhao Chen)

- Misc fixes and cleanups

There's a conflict in fs/fuse/inode.c.  The resolution (attached) is
to leave the fuse_backing_files_free() call in fuse_conn_put(), before
call_rcu().

Thanks,
Miklos

---
Alexander Mikhalitsyn (2):
      fuse: fix typo for fuse_permission comment
      fuse: __kuid_val/__kgid_val helpers in fuse_fill_attr_from_inode()

Amir Goldstein (14):
      fuse: factor out helper fuse_truncate_update_attr()
      fuse: allocate ff->release_args only if release is needed
      fuse: break up fuse_open_common()
      fuse: prepare for failing open response
      fuse: introduce inode io modes
      fuse: allow parallel dio writes with FUSE_DIRECT_IO_ALLOW_MMAP
      fuse: factor out helper for FUSE_DEV_IOC_CLONE
      fuse: introduce FUSE_PASSTHROUGH capability
      fuse: implement ioctls to manage backing files
      fuse: prepare for opening file in passthrough mode
      fuse: implement open in passthrough mode
      fuse: implement read/write passthrough
      fuse: implement splice read/write passthrough
      fuse: implement passthrough for mmap

Bernd Schubert (3):
      fuse: fix VM_MAYSHARE and direct_io_allow_mmap
      fuse: create helper function if DIO write needs exclusive lock
      fuse: add fuse_dio_lock/unlock helper functions

Jiachen Zhang (1):
      fuse: remove an unnecessary if statement

Jingbo Xu (1):
      fuse: add support for explicit export disabling

Kemeng Shi (1):
      fuse: remove unneeded lock which protecting update of congestion_threshold

Lei Huang (1):
      fuse: Fix missing FOLL_PIN for direct-io

Li RongQing (1):
      virtio_fs: remove duplicate check if queue is broken

Matthew Wilcox (Oracle) (2):
      fuse: Remove fuse_writepage
      fuse: Convert fuse_writepage_locked to take a folio

Miklos Szeredi (5):
      fuse: replace remaining make_bad_inode() with fuse_make_bad()
      fuse: fix root lookup with nonzero generation
      fuse: don't unhash root
      fuse: use FUSE_ROOT_ID in fuse_get_root_inode()
      fuse: get rid of ff->readdir.lock

Stefan Hajnoczi (4):
      virtiofs: forbid newlines in tags
      virtiofs: export filesystem tags through sysfs
      virtiofs: emit uevents on filesystem events
      virtiofs: drop __exit from virtio_fs_sysfs_exit()

Zhao Chen (2):
      fuse: Introduce a new notification type for resend pending requests
      fuse: Use the high bit of request ID for indicating resend requests

Zhou Jifeng (1):
      fuse: Track process write operations in both direct and writethrough modes

---
 Documentation/ABI/testing/sysfs-fs-virtiofs |  11 +
 fs/fuse/Kconfig                             |  11 +
 fs/fuse/Makefile                            |   2 +
 fs/fuse/control.c                           |   6 +-
 fs/fuse/dev.c                               | 156 ++++++++--
 fs/fuse/dir.c                               |  55 +++-
 fs/fuse/file.c                              | 457 +++++++++++++++++-----------
 fs/fuse/fuse_i.h                            | 153 ++++++++--
 fs/fuse/inode.c                             |  55 +++-
 fs/fuse/iomode.c                            | 254 ++++++++++++++++
 fs/fuse/passthrough.c                       | 355 +++++++++++++++++++++
 fs/fuse/readdir.c                           |   4 -
 fs/fuse/virtio_fs.c                         | 141 +++++++--
 include/uapi/linux/fuse.h                   |  39 ++-
 14 files changed, 1422 insertions(+), 277 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-fs-virtiofs
 create mode 100644 fs/fuse/iomode.c
 create mode 100644 fs/fuse/passthrough.c

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