[Qemu-devel] [PATCH v10 04/13] block: Introduce bdrv_dirty_bitmap_granularity()

[John Snow <jsnow@redhat.com>]

From: Fam Zheng <famz@redhat.com>

This returns the granularity (in bytes) of dirty bitmap,
which matches the QMP interface and the existing query
interface.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
---
 block.c               | 9 +++++++--
 include/block/block.h | 2 ++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/block.c b/block.c
index 3eb77ee..a1d9e88 100644
--- a/block.c
+++ b/block.c
@@ -5396,8 +5396,7 @@ BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs)
         BlockDirtyInfo *info = g_new0(BlockDirtyInfo, 1);
         BlockDirtyInfoList *entry = g_new0(BlockDirtyInfoList, 1);
         info->count = bdrv_get_dirty_count(bs, bm);
-        info->granularity =
-            ((int64_t) BDRV_SECTOR_SIZE << hbitmap_granularity(bm->bitmap));
+        info->granularity = bdrv_dirty_bitmap_granularity(bs, bm);
         info->has_name = !!bm->name;
         info->name = g_strdup(bm->name);
         entry->value = info;
@@ -5437,6 +5436,12 @@ uint64_t bdrv_get_default_bitmap_granularity(BlockDriverState *bs)
     return granularity;
 }
 
+uint64_t bdrv_dirty_bitmap_granularity(BlockDriverState *bs,
+                                       BdrvDirtyBitmap *bitmap)
+{
+    return BDRV_SECTOR_SIZE << hbitmap_granularity(bitmap->bitmap);
+}
+
 void bdrv_dirty_iter_init(BlockDriverState *bs,
                           BdrvDirtyBitmap *bitmap, HBitmapIter *hbi)
 {
diff --git a/include/block/block.h b/include/block/block.h
index 44dd6ca..c7402e7 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -439,6 +439,8 @@ void bdrv_dirty_bitmap_make_anon(BlockDriverState *bs, BdrvDirtyBitmap *bitmap);
 void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap);
 BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs);
 uint64_t bdrv_get_default_bitmap_granularity(BlockDriverState *bs);
+uint64_t bdrv_dirty_bitmap_granularity(BlockDriverState *bs,
+                                      BdrvDirtyBitmap *bitmap);
 int bdrv_get_dirty(BlockDriverState *bs, BdrvDirtyBitmap *bitmap, int64_t sector);
 void bdrv_set_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap,
                            int64_t cur_sector, int nr_sectors);
-- 
1.9.3