Commit e73a265e authored Mar 13, 2018 by Vladimir Sementsov-Ogievskiy Committed by John Snow Mar 13, 2018

block/dirty-bitmap: add bdrv_dirty_bitmap_enable_successor()



Enabling bitmap successor is necessary to enable successors of bitmaps
being migrated before target vm start.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 20180207155837.92351-2-vsementsov@virtuozzo.com
Signed-off-by: John Snow <jsnow@redhat.com>

parent 026aaf47

block/dirty-bitmap.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -234,6 +234,14 @@ int bdrv_dirty_bitmap_create_successor(BlockDriverState *bs,
		return 0;
		}

		/* Called with BQL taken. */
		void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap)
		{
		qemu_mutex_lock(bitmap->mutex);
		bdrv_enable_dirty_bitmap(bitmap->successor);
		qemu_mutex_unlock(bitmap->mutex);
		}

		/**
		* For a bitmap with a successor, yield our name to the successor,
		* delete the old bitmap, and return a handle to the new bitmap.

include/block/dirty-bitmap.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@ BdrvDirtyBitmap bdrv_dirty_bitmap_abdicate(BlockDriverState bs,
		BdrvDirtyBitmap bdrv_reclaim_dirty_bitmap(BlockDriverState bs,
		BdrvDirtyBitmap *bitmap,
		Error **errp);
		void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap);
		BdrvDirtyBitmap bdrv_find_dirty_bitmap(BlockDriverState bs,
		const char *name);
		void bdrv_dirty_bitmap_make_anon(BdrvDirtyBitmap *bitmap);