[PATCH v4 0/5] virtiofs: propagate sync() to file server

[Greg Kurz]

This was a single patch until v3. Some preliminary cleanups were
introduced for submounts in this v4.

This can be tested with a custom virtiofsd implementing FUSE_SYNCFS, here:

https://gitlab.com/gkurz/qemu/-/tree/fuse-sync

v4: - submount fixes
    - set nodeid of the superblock in the request (Miklos)

v3: - just keep a 64-bit padding field in the arg struct (Vivek)

v2: - clarify compatibility with older servers in changelog (Vivek)
    - ignore the wait == 0 case (Miklos)
    - 64-bit aligned argument structure (Vivek, Miklos)

Greg Kurz (5):
  fuse: Fix leak in fuse_dentry_automount() error path
  fuse: Call vfs_get_tree() for submounts
  fuse: Make fuse_fill_super_submount() static
  virtiofs: Skip submounts in sget_fc()
  virtiofs: propagate sync() to file server

 fs/fuse/dir.c             | 45 +++++---------------
 fs/fuse/fuse_i.h          | 12 +++---
 fs/fuse/inode.c           | 87 ++++++++++++++++++++++++++++++++++++++-
 fs/fuse/virtio_fs.c       |  9 ++++
 include/uapi/linux/fuse.h | 10 ++++-
 5 files changed, 120 insertions(+), 43 deletions(-)

-- 
2.26.3