[Qemu-devel] [PATCH RFC v2 6/8] block: add bdrv_next_dirty_bitmap()

[Vladimir Sementsov-Ogievskiy <vsementsov@parallels.com>]

Like bdrv_next()  - bdrv_next_dirty_bitmap() is a function to provide
access to private dirty bitmaps list.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@parallels.com>
---
 block.c               | 10 ++++++++++
 include/block/block.h |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/block.c b/block.c
index 15fc621..9e59c2e 100644
--- a/block.c
+++ b/block.c
@@ -5514,6 +5514,16 @@ BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs)
     return list;
 }
 
+BdrvDirtyBitmap *bdrv_next_dirty_bitmap(BlockDriverState *bs,
+                                        BdrvDirtyBitmap *bitmap)
+{
+    if (bitmap == NULL) {
+        return QLIST_FIRST(&bs->dirty_bitmaps);
+    }
+
+    return QLIST_NEXT(bitmap, list);
+}
+
 int bdrv_get_dirty(BlockDriverState *bs, BdrvDirtyBitmap *bitmap, int64_t sector)
 {
     if (bitmap) {
diff --git a/include/block/block.h b/include/block/block.h
index 7b49d98..34d0259 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -474,6 +474,8 @@ void bdrv_dirty_bitmap_deserialize_part(BdrvDirtyBitmap *bitmap,
 void bdrv_dirty_bitmap_deserialize_part0(BdrvDirtyBitmap *bitmap,
                                          uint64_t start, uint64_t count);
 void bdrv_dirty_bitmap_deserialize_finish(BdrvDirtyBitmap *bitmap);
+BdrvDirtyBitmap *bdrv_next_dirty_bitmap(BlockDriverState *bs,
+                                        BdrvDirtyBitmap *bitmap);
 
 HBitmap *bdrv_create_dirty_dirty_bitmap(BdrvDirtyBitmap *bitmap,
                                         uint64_t granularity);
-- 
1.9.1