specs/qcow2: do not use wording 'bitmap header'

A bitmap directory entry is sometimes called a 'bitmap header'. This
patch leaves only one name - 'bitmap directory entry'. The name 'bitmap
header' creates misunderstandings with 'qcow2 header' and 'qcow2 bitmap
header extension' (which is extension of qcow2 header)

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20170628120530.31251-3-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>

diff --git a/docs/interop/qcow2.txt b/docs/interop/qcow2.txt
index aee3553a4f5810d03fcb71396728607f7096c201..d7fdb1fee313c33d2f0d9e9b467d64b970aa4e8a 100644 (file)
--- a/docs/interop/qcow2.txt
+++ b/docs/interop/qcow2.txt
@@ -203,7 +203,7 @@ The fields of the bitmaps extension are:
 
           8 - 15:  bitmap_directory_size
                    Size of the bitmap directory in bytes. It is the cumulative
-                   size of all (nb_bitmaps) bitmap headers.
+                   size of all (nb_bitmaps) bitmap directory entries.
 
          16 - 23:  bitmap_directory_offset
                    Offset into the image file at which the bitmap directory
@@ -529,8 +529,7 @@ Each bitmap saved in the image is described in a bitmap directory entry. The
 bitmap directory is a contiguous area in the image file, whose starting offset
 and length are given by the header extension fields bitmap_directory_offset and
 bitmap_directory_size. The entries of the bitmap directory have variable
-length, depending on the lengths of the bitmap name and extra data. These
-entries are also called bitmap headers.
+length, depending on the lengths of the bitmap name and extra data.
 
 Structure of a bitmap directory entry: