diff --git a/design/XFS_Filesystem_Structure/journaling_log.asciidoc b/design/XFS_Filesystem_Structure/journaling_log.asciidoc
index 9d9fa83..6b9d65c 100644
--- a/design/XFS_Filesystem_Structure/journaling_log.asciidoc
+++ b/design/XFS_Filesystem_Structure/journaling_log.asciidoc
@@ -730,10 +730,18 @@
 .Extended attribute update log intent types
 [options="header"]
 |=====
-| Value				| Description
-| +XFS_ATTRI_OP_FLAGS_SET+	| Set a key/value pair.
-| +XFS_ATTRI_OP_FLAGS_REMOVE+	| Remove a key/value pair.
-| +XFS_ATTRI_OP_FLAGS_REPLACE+	| Replace one key/value pair with another.
+| Value					| Description
+| +XFS_ATTRI_OP_FLAGS_SET+		| Associate an attribute name with the
+given value, creating an entry for the name if necessary.
+| +XFS_ATTRI_OP_FLAGS_REMOVE+		| Remove an attribute name and any
+value associated with it.
+| +XFS_ATTRI_OP_FLAGS_REPLACE+		| Remove any value associated with an
+attribute name, then associate the name with the given value.
+| +XFS_ATTRI_OP_FLAGS_PPTR_SET+		| Add a parent pointer associating a directory entry name with a file handle to the parent directory.  The (name, handle) tuple must not exist in the attribute structure.
+| +XFS_ATTRI_OP_FLAGS_PPTR_REMOVE+	| Remove a parent pointer from the attribute structure.  The (name, handle) tuple must already exist.
+| +XFS_ATTRI_OP_FLAGS_PPTR_REPLACE+	| Remove a specific (name, handle) tuple from
+the attribute structure, then add a new (name, handle) tuple to the attribute structure.
+The two names and handles need not be the same.
 |=====
 
 The ``extended attribute update intent'' operation comes first; it tells the
@@ -747,11 +755,17 @@
 struct xfs_attri_log_format {
      uint16_t                  alfi_type;
      uint16_t                  alfi_size;
-     uint32_t                  __pad;
+     uint32_t                  alfi_igen;
      uint64_t                  alfi_id;
      uint64_t                  alfi_ino;
      uint32_t                  alfi_op_flags;
-     uint32_t                  alfi_name_len;
+     union {
+          uint32_t             alfi_name_len;
+          struct {
+              uint16_t         alfi_old_name_len;
+              uint16_t         alfi_new_name_len;
+          };
+     };
      uint32_t                  alfi_value_len;
      uint32_t                  alfi_attr_filter;
 };
@@ -764,6 +778,9 @@
 *alfi_size*::
 Size of this log item.  Should be 1.
 
+*alfi_igen*::
+Generation number of the file being updated.
+
 *alfi_id*::
 A 64-bit number that binds the corresponding ATTRD log item to this ATTRI log
 item.
@@ -778,6 +795,13 @@
 *alfi_name_len*::
 Length of the name of the extended attribute.  This must not be zero.
 The attribute name itself is captured in the next log item.
+This field is not defined for the PPTR_REPLACE opcode.
+
+*alfi_old_name_len*::
+For PPTR_REPLACE, this is the length of the old name.
+
+*alfi_new_name_len*::
+For PPTR_REPLACE, this is the length of the new name.
 
 *alfi_value_len*::
 Length of the value of the extended attribute.  This must be zero for remove
@@ -789,6 +813,24 @@
 Attribute namespace filter flags.  This must be one of +ATTR_ROOT+,
 +ATTR_SECURE+, or +ATTR_INCOMPLETE+.
 
+For a SET or REPLACE opcode, there should be two regions after the ATTRI intent
+item.  The first region contains the attribute name and the second contains the
+attribute value.
+
+For a REMOVE opcode, there should only be one region after the ATTRI intent
+item, and it will contain the attribute name.
+
+For an PPTR_SET or PPTR_REMOVE opcode, there should be two regions after the
+ATTRI intent item.  The first region contains the dirent name as the attribute
+name.  The second region contains a file handle to the parent directory as the
+attribute value.
+
+For an PPTR_REPLACE opcode, there should be between four regions after the
+ATTRI intent item.  The first region contains the dirent name to remove.
+The second region contains the dirent name to create.  The third region
+contains the parent directory file handle to remove.  The fourth region
+contains the parent directory file handle to add.
+
 [[ATTRD_Log_Item]]
 === Completion of Extended Attribute Updates