Added descriptions of the mount table entry elements.

doc/filesystem/mounting.t

@@ -60,6 +60,41 @@ struct rtems_filesystem_mount_table_entry_tt
 @};
 @end example
 
+@table @b
+@item Node
+The Node is used to produce a linked list of mount table entry nodes.
+
+@item mt_point_node
+The mt_point_node contains all information necessary to access the
+directory where a filesystem is mounted onto.  This element may contain
+memory that is allocated during a path evaluation of the filesystem
+containing the mountpoint directory.  The generic code allows this
+memory to be returned by unmount when the filesystem identified by
+mt_fs_root is unmounted.  
+
+@item mt_fs_root
+The mt_fs_root contains all information necessary to identify the root
+of the mounted filesystem. The user is never allowed access to this
+node by the generic code, but it is used to identify to the mounted 
+filesystem where to start evaluation of pathnames at.
+
+@item options
+XXX
+
+@item fs_info
+The fs_info element is a location available for use by the mounted file
+system to identify unique things applicable to this instance of the file
+system.  For example the IMFS uses this space to provide node 
+identification that is unique for each instance (mounting) of the filesystem.
+
+@item pathconf_limits_and_options
+XXX
+
+@item dev
+This character string represents the device where the filesystem will reside.
+
+@end table
+
 @section Adding entries to the chain during mount
 
 When a filesystem is mounted, its presence and location in the file
@@ -72,3 +107,65 @@ each filesystem that is mounted. This includes the base filesystem.
 When a filesystem is dismounted its entry in the mount table chain is
 extracted and the memory for this entry is freed.
 
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