When looking for a dirty bitmap to share, we should handle filters by
just including them in the search (so they do not break backing chains).
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
if (bitmap) {
BdrvDirtyBitmap *bm = NULL;
- while (true) {
+ while (bs) {
bm = bdrv_find_dirty_bitmap(bs, bitmap);
- if (bm != NULL || bs->backing == NULL) {
+ if (bm != NULL) {
break;
}
- bs = bs->backing->bs;
+ bs = bdrv_filter_or_cow_bs(bs);
}
if (bm == NULL) {