[Qemu-devel] [PATCH RFC v4 05/13] 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.

Reviewed-by: John Snow <jsnow@redhat.com>
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 e77be2e..7b6251c 100644
--- a/block.c
+++ b/block.c
@@ -5653,6 +5653,16 @@ BlockDirtyBitmapInfo *bdrv_query_dirty_bitmap(BlockDriverState *bs,
     return info;
 }
 
+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 00e34b5..ae08d51 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -487,6 +487,8 @@ void bdrv_dirty_bitmap_deserialize_part(BdrvDirtyBitmap *bitmap,
 void bdrv_dirty_bitmap_deserialize_zeroes(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);
 
 /* chunk size here is number of bytes of the @bitmap data per one bit of the
  * meta bitmap being created */
-- 
1.9.1