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[05/17] block: add bdrv_next_dirty_bitmap()

Message ID 1455300040-109726-6-git-send-email-vsementsov@virtuozzo.com
State New
Headers show

Commit Message

Vladimir Sementsov-Ogievskiy Feb. 12, 2016, 6 p.m. UTC 
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@virtuozzo.com>
---
 block/dirty-bitmap.c         | 10 ++++++++++
 include/block/dirty-bitmap.h |  3 +++
 2 files changed, 13 insertions(+)
diff mbox

Patch

diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
index 919ce10..2656b8b 100644
--- a/block/dirty-bitmap.c
+++ b/block/dirty-bitmap.c
@@ -490,3 +490,13 @@  int64_t bdrv_get_dirty_count(BdrvDirtyBitmap *bitmap)
 {
     return hbitmap_count(bitmap->bitmap);
 }
+
+BdrvDirtyBitmap *bdrv_next_dirty_bitmap(BlockDriverState *bs,
+                                        BdrvDirtyBitmap *bitmap)
+{
+    if (bitmap == NULL) {
+        return QLIST_FIRST(&bs->dirty_bitmaps);
+    }
+
+    return QLIST_NEXT(bitmap, list);
+}
diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h
index 6ba5bec..1ccab36 100644
--- a/include/block/dirty-bitmap.h
+++ b/include/block/dirty-bitmap.h
@@ -68,4 +68,7 @@  void bdrv_dirty_bitmap_deserialize_zeroes(BdrvDirtyBitmap *bitmap,
                                           bool finish);
 void bdrv_dirty_bitmap_deserialize_finish(BdrvDirtyBitmap *bitmap);
 
+BdrvDirtyBitmap *bdrv_next_dirty_bitmap(BlockDriverState *bs,
+                                        BdrvDirtyBitmap *bitmap);
+
 #endif