filesystem supports asynchronous read requests
filesystem supports "remote" locking
filesystem handles the O_TRUNC open flag
filesystem handles lookups of "." and ".."
filesystem can handle write size larger than 4kB
don't apply umask to file mode on create operations
ability to use splice() to write to the fuse device
ability to move data to the fuse device with splice()
ability to use splice() to read from the fuse device
ioctl support on directories
Capability bits for 'fuse_conn_info.capable' and 'fuse_conn_info.want'