!Edrivers/base/platform.c
  !Edrivers/base/bus.c
       </sect1>
 -     <sect1><title>Device Drivers DMA Management</title>
 +     <sect1>
 +       <title>Buffer Sharing and Synchronization</title>
 +       <para>
 +         The dma-buf subsystem provides the framework for sharing buffers
 +         for hardware (DMA) access across multiple device drivers and
 +         subsystems, and for synchronizing asynchronous hardware access.
 +       </para>
 +       <para>
 +         This is used, for example, by drm "prime" multi-GPU support, but
 +         is of course not limited to GPU use cases.
 +       </para>
 +       <para>
 +         The three main components of this are: (1) dma-buf, representing
 +         a sg_table and exposed to userspace as a file descriptor to allow
 +         passing between devices, (2) fence, which provides a mechanism
 +         to signal when one device as finished access, and (3) reservation,
 +         which manages the shared or exclusive fence(s) associated with
 +         the buffer.
 +       </para>
 +       <sect2><title>dma-buf</title>
  !Edrivers/dma-buf/dma-buf.c
 +!Iinclude/linux/dma-buf.h
 +       </sect2>
 +       <sect2><title>reservation</title>
 +!Pdrivers/dma-buf/reservation.c Reservation Object Overview
 +!Edrivers/dma-buf/reservation.c
 +!Iinclude/linux/reservation.h
 +       </sect2>
 +       <sect2><title>fence</title>
  !Edrivers/dma-buf/fence.c
 -!Edrivers/dma-buf/seqno-fence.c
 -!Edrivers/dma-buf/fence-array.c
  !Iinclude/linux/fence.h
 +!Edrivers/dma-buf/seqno-fence.c
  !Iinclude/linux/seqno-fence.h
++!Edrivers/dma-buf/fence-array.c
+ !Iinclude/linux/fence-array.h
+ !Edrivers/dma-buf/reservation.c
+ !Iinclude/linux/reservation.h
  !Edrivers/dma-buf/sync_file.c
  !Iinclude/linux/sync_file.h
 +       </sect2>
 +     </sect1>
 +     <sect1><title>Device Drivers DMA Management</title>
  !Edrivers/base/dma-coherent.c
  !Edrivers/base/dma-mapping.c
       </sect1>