block/dirty-bitmap: add bdrv_has_named_bitmaps helper
To be used for bitmap migration in further commit.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200521220648.3255-3-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
index f9bfc77..c01319b 100644
--- a/block/dirty-bitmap.c
+++ b/block/dirty-bitmap.c
@@ -818,6 +818,19 @@
return false;
}
+bool bdrv_has_named_bitmaps(BlockDriverState *bs)
+{
+ BdrvDirtyBitmap *bm;
+
+ QLIST_FOREACH(bm, &bs->dirty_bitmaps, list) {
+ if (bdrv_dirty_bitmap_name(bm)) {
+ return true;
+ }
+ }
+
+ return false;
+}
+
/* Called with BQL taken. */
void bdrv_dirty_bitmap_set_persistence(BdrvDirtyBitmap *bitmap, bool persistent)
{
diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h
index 5a8d52e..36e8da4 100644
--- a/include/block/dirty-bitmap.h
+++ b/include/block/dirty-bitmap.h
@@ -95,6 +95,7 @@
void bdrv_dirty_bitmap_truncate(BlockDriverState *bs, int64_t bytes);
bool bdrv_dirty_bitmap_readonly(const BdrvDirtyBitmap *bitmap);
bool bdrv_has_readonly_bitmaps(BlockDriverState *bs);
+bool bdrv_has_named_bitmaps(BlockDriverState *bs);
bool bdrv_dirty_bitmap_get_autoload(const BdrvDirtyBitmap *bitmap);
bool bdrv_dirty_bitmap_get_persistence(BdrvDirtyBitmap *bitmap);
bool bdrv_dirty_bitmap_inconsistent(const BdrvDirtyBitmap *bitmap);
