On 2014-10-30 at 04:22, Fam Zheng wrote:
Signed-off-by: Fam Zheng <f...@redhat.com>
---
block.c | 26 +++++++++++++++++++++++++-
include/block/block.h | 4 ++++
2 files changed, 29 insertions(+), 1 deletion(-)
diff --git a/block.c b/block.c
index 1b12541..39381cd 100644
--- a/block.c
+++ b/block.c
@@ -53,6 +53,8 @@
struct BdrvDirtyBitmap {
HBitmap *bitmap;
+ int64_t size;
+ int granularity;
Why do you add this field when you never use it except for setting it in
bdrv_create_dirty_bitmap()? I at least couldn't find any place which
uses it by quickly scanning the rest of the series...
You could use it for bdrv_dirty_bitmap_granularity(), though.
char *name;
QLIST_ENTRY(BdrvDirtyBitmap) list;
};
@@ -5280,6 +5282,26 @@ void bdrv_dirty_bitmap_make_anon(BlockDriverState *bs,
BdrvDirtyBitmap *bitmap)
bitmap->name = NULL;
}
+BdrvDirtyBitmap *bdrv_copy_dirty_bitmap(BlockDriverState *bs,
+ const BdrvDirtyBitmap *bitmap,
+ const char *name)
+{
+ BdrvDirtyBitmap *new_bitmap;
+
+ new_bitmap = g_malloc0(sizeof(BdrvDirtyBitmap));
+ new_bitmap->bitmap = hbitmap_copy(bitmap->bitmap);
+ new_bitmap->size = bitmap->size;
+ new_bitmap->granularity = bitmap->granularity;
+ new_bitmap->name = name ? g_strdup(name) : NULL;
+ QLIST_INSERT_HEAD(&bs->dirty_bitmaps, new_bitmap, list);
+ return new_bitmap;
+}
+
+void bdrv_reset_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap)
+{
+ hbitmap_reset(bitmap->bitmap, 0, bitmap->size);
+}
+
BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs,
int granularity,
const char *name,
@@ -5303,7 +5325,9 @@ BdrvDirtyBitmap
*bdrv_create_dirty_bitmap(BlockDriverState *bs,
return NULL;
}
bitmap = g_new0(BdrvDirtyBitmap, 1);
- bitmap->bitmap = hbitmap_alloc(bitmap_size, ffs(granularity) - 1);
+ bitmap->size = bitmap_size;
+ bitmap->granularity = ffs(granularity) - 1;
+ bitmap->bitmap = hbitmap_alloc(bitmap->size, bitmap->granularity);
if (name) {
bitmap->name = g_strdup(name);
}
diff --git a/include/block/block.h b/include/block/block.h
index 87fa48e..c5a3aa6 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -426,6 +426,10 @@ BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState
*bs,
BdrvDirtyBitmap *bdrv_find_dirty_bitmap(BlockDriverState *bs,
const char *name);
void bdrv_dirty_bitmap_make_anon(BlockDriverState *bs, BdrvDirtyBitmap
*bitmap);
+void bdrv_reset_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap);
+BdrvDirtyBitmap *bdrv_copy_dirty_bitmap(BlockDriverState *bs,
+ const BdrvDirtyBitmap *bitmap,
+ const char *name);
void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap);
BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs);
int bdrv_dirty_bitmap_granularity(BlockDriverState *bs,
Reviewed-by: Max Reitz <mre...@redhat.com>
