[PATCH V2 1/2] metadump.asciidoc: Add description for version v1's mb_info field

[Chandan Babu R <chandan.babu@oracle.com>]

mb_reserved has been replaced with mb_info in upstream xfsprogs. This commit
adds description for valid bits of mb_info field.

Signed-off-by: Chandan Babu R <chandan.babu@oracle.com>
---
 .../metadump.asciidoc                         | 23 ++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/design/XFS_Filesystem_Structure/metadump.asciidoc b/design/XFS_Filesystem_Structure/metadump.asciidoc
index 2bddb77..2f35b7e 100644
--- a/design/XFS_Filesystem_Structure/metadump.asciidoc
+++ b/design/XFS_Filesystem_Structure/metadump.asciidoc
@@ -21,7 +21,7 @@ struct xfs_metablock {
 	__be32		mb_magic;
 	__be16		mb_count;
 	uint8_t		mb_blocklog;
-	uint8_t		mb_reserved;
+	uint8_t		mb_info;
 	__be64		mb_daddr[];
 };
 ----
@@ -37,8 +37,25 @@ Number of blocks indexed by this record.  This value must not exceed +(1
 The log size of a metadump block.  This size of a metadump block 512
 bytes, so this value should be 9.
 
-*mb_reserved*::
-Reserved.  Should be zero.
+*mb_info*::
+Flags describing a metadata dump.
+
+[options="header"]
+|=====
+| Flag				| Description
+| +XFS_METADUMP_INFO_FLAGS+ |
+The remaining bits in this field are valid.
+
+| +XFS_METADUMP_OBFUSCATED+ |
+File names and extended attributes have been obfuscated.
+
+| +XFS_METADUMP_FULLBLOCKS+ |
+Metadata blocks have been copied in full i.e. stale bytes have not
+been zeroed out.
+
+| +XFS_METADUMP_DIRTYLOG+ |
+Log was dirty.
+|=====
 
 *mb_daddr*::
 An array of disk addresses.  Each of the +mb_count+ blocks (of size +(1
-- 
2.39.1