Documentation/filesystems/idmappings.rst

652 ``vfsuid_t`` and ``vfsgid_t`` types.
655 ``vfsuid_t`` and ``vfsgid_t`` types and we will be able to rely on the compiler
658 The ``vfsuid_t`` and ``vfsgid_t`` types are often mapped from and to ``kuid_t``
662  uid_t <--> kuid_t <--> vfsuid_t
665 Whenever we report ownership based on a ``vfsuid_t`` or ``vfsgid_t`` type,
667 based on a ``vfsuid_t`` or ``vfsgid_t`` type, e.g., during ``chown()`` we can
672 a ``vfsuid_t`` or ``vfsgid_t`` based on the mount idmapping we later commit to
673 this ``vfsuid_t`` or ``vfsgid_t`` to become the new filesystem wide ownership.
674 Thus, we are turning the ``vfsuid_t`` or ``vfsgid_t`` into a global ``kuid_t``
680 ``kuid_t`` and ``kgid_t`` must be used. Ownership expressed via ``vfsuid_t``
683 We already noted that ``vfsuid_t`` and ``vfsgid_t`` types are generated based
686 ``vfsuid_t`` or ``vfsgid_t`` types or mount idmappings to generate ``kuid_t``
690 All helpers that map to or from ``vfsuid_t`` and ``vfsgid_t`` types require