block: Drop BDS comment regarding bdrv_append()

There is a comment above the BDS definition stating care must be taken
to consider handling newly added fields in bdrv_append().

Actually, this comment should have said "bdrv_swap()" as of 4ddc07cac
(nine years ago), and in any case, bdrv_swap() was dropped in
8e419aefa (six years ago).  So no such care is necessary anymore.

Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210812084148.14458-2-hreitz@redhat.com>

diff --git a/include/block/block_int.h b/include/block/block_int.h
index f1a54db..12e5750 100644 (file)
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -839,12 +839,6 @@ struct BdrvChild {
     QLIST_ENTRY(BdrvChild) next_parent;
 };
 
-/*
- * Note: the function bdrv_append() copies and swaps contents of
- * BlockDriverStates, so if you add new fields to this struct, please
- * inspect bdrv_append() to determine if the new fields need to be
- * copied as well.
- */
 struct BlockDriverState {
     /* Protected by big QEMU lock or read-only after opening.  No special
      * locking needed during I/O...