qcow2: Tweak comments on qcow2_get_persistent_dirty_bitmap_size
commitf17d68477030b24a13ecb55d371f57f19199210d
authorEric Blake <eblake@redhat.com>
Mon, 8 Jun 2020 19:08:21 +0000 (8 14:08 -0500)
committerKevin Wolf <kwolf@redhat.com>
Wed, 17 Jun 2020 12:53:39 +0000 (17 14:53 +0200)
tree9475c9d6d4fb87fe9a5b6fd2dcfd652965365d97
parente37adbebd19634836369e9572d9aaa0f088332fd
qcow2: Tweak comments on qcow2_get_persistent_dirty_bitmap_size

For now, we don't have persistent bitmaps in any other formats, but
that might not be true in the future.  Make it obvious that our
incoming parameter is not necessarily a qcow2 image, and therefore is
limited to just the bdrv_dirty_bitmap_* API calls (rather than probing
into qcow2 internals).

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200608190821.3293867-1-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
block/qcow2-bitmap.c