tree 14d48c16ce0573c7bfa160c9535df1db060ce22a
parent 56bd662497259400b7c9f155aaebaddde4450028
author Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> 1540844595 -0400
committer John Snow <jsnow@redhat.com> 1540844595 -0400

dirty-bitmap: make it possible to restore bitmap after merge

Add backup parameter to bdrv_merge_dirty_bitmap() to be used then with
bdrv_restore_dirty_bitmap() if it needed to restore the bitmap after
merge operation.

This is needed to implement bitmap merge transaction action in further
commit.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>