[git pull][6.17] vfs.git 3/9: rpc_pipefs

[Al Viro <viro@zeniv.linux.org.uk>]

[the first couple of commits is shared with #work.simple_recursive_removal]

The following changes since commit 19272b37aa4f83ca52bdf9c16d5d81bdd1354494:

  Linux 6.16-rc1 (2025-06-08 13:44:43 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git tags/pull-rpc_pipefs

for you to fetch changes up to 350db61fbeb940502a16e74153ee5954d03622e9:

  rpc_create_client_dir(): return 0 or -E... (2025-07-02 22:44:55 -0400)

----------------------------------------------------------------
Massage rpc_pipefs to use saner primitives and clean up the
APIs provided to the rest of the kernel.

----------------------------------------------------------------
Al Viro (18):
      simple_recursive_removal(): saner interaction with fsnotify
      better lockdep annotations for simple_recursive_removal()
      new helper: simple_start_creating()
      rpc_pipe: clean failure exits in fill_super
      rpc_{rmdir_,}depopulate(): use simple_recursive_removal() instead
      rpc_unlink(): use simple_recursive_removal()
      rpc_populate(): lift cleanup into callers
      rpc_unlink(): saner calling conventions
      rpc_mkpipe_dentry(): saner calling conventions
      rpc_pipe: don't overdo directory locking
      rpc_pipe: saner primitive for creating subdirectories
      rpc_pipe: saner primitive for creating regular files
      rpc_mkpipe_dentry(): switch to simple_start_creating()
      rpc_gssd_dummy_populate(): don't bother with rpc_populate()
      rpc_pipe: expand the calls of rpc_mkdir_populate()
      rpc_new_dir(): the last argument is always NULL
      rpc_create_client_dir(): don't bother with rpc_populate()
      rpc_create_client_dir(): return 0 or -E...

 fs/debugfs/inode.c                 |  21 +-
 fs/libfs.c                         |  34 ++-
 fs/nfs/blocklayout/rpc_pipefs.c    |  53 ++--
 fs/nfs/nfs4idmap.c                 |  14 +-
 fs/nfsd/nfs4recover.c              |  49 ++--
 fs/tracefs/inode.c                 |  15 +-
 include/linux/fs.h                 |   1 +
 include/linux/sunrpc/rpc_pipe_fs.h |   6 +-
 net/sunrpc/auth_gss/auth_gss.c     |  13 +-
 net/sunrpc/clnt.c                  |  36 +--
 net/sunrpc/rpc_pipe.c              | 530 ++++++++++---------------------------
 11 files changed, 230 insertions(+), 542 deletions(-)