• Linus Torvalds's avatar
    Merge tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs · 13d88ac5
    Linus Torvalds authored
    Pull vfs fanotify fsid updates from Christian Brauner:
     "This work is part of the plan to enable fanotify to serve as a drop-in
      replacement for inotify. While inotify is availabe on all filesystems,
      fanotify currently isn't.
    
      In order to support fanotify on all filesystems two things are needed:
    
       (1) all filesystems need to support AT_HANDLE_FID
    
       (2) all filesystems need to report a non-zero f_fsid
    
      This contains (1) and allows filesystems to encode non-decodable file
      handlers for fanotify without implementing any exportfs operations by
      encoding a file id of type FILEID_INO64_GEN from i_ino and
      i_generation.
    
      Filesystems that want to opt out of encoding non-decodable file ids
      for fanotify that don't support NFS export can do so by providing an
      empty export_operations struct.
    
      This also partially addresses (2) by generating f_fsid for simple
      filesystems as well as freevxfs. Remaining filesystems will be dealt
      with by separate patches.
    
      Finally, this contains the patch from the current exportfs maintainers
      which moves exportfs under vfs with Chuck, Jeff, and Amir as
      maintainers and vfs.git as tree"
    
    * tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
      MAINTAINERS: create an entry for exportfs
      fs: fix build error with CONFIG_EXPORTFS=m or not defined
      freevxfs: derive f_fsid from bdev->bd_dev
      fs: report f_fsid from s_dev for "simple" filesystems
      exportfs: support encoding non-decodeable file handles by default
      exportfs: define FILEID_INO64_GEN* file handle types
      exportfs: make ->encode_fh() a mandatory method for NFS export
      exportfs: add helpers to check if filesystem can encode/decode file handles
    13d88ac5
super.c 206 KB