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[Qemu-devel] [PATCH v9 01/13] block/dirty-bitmap: add bdrv_dirty_bitmap_
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[Qemu-devel] [PATCH v9 01/13] block/dirty-bitmap: add bdrv_dirty_bitmap_enable_successor() |
Date: |
Wed, 20 Dec 2017 18:49:33 +0300 |
Enabling bitmap successor is necessary to enable successors of bitmaps
being migrated before target vm start.
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
Reviewed-by: John Snow <address@hidden>
---
include/block/dirty-bitmap.h | 1 +
block/dirty-bitmap.c | 8 ++++++++
2 files changed, 9 insertions(+)
diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h
index 3579a7597c..93d4336505 100644
--- a/include/block/dirty-bitmap.h
+++ b/include/block/dirty-bitmap.h
@@ -20,6 +20,7 @@ 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);
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
index bd04e991b1..81adbeb6d4 100644
--- a/block/dirty-bitmap.c
+++ b/block/dirty-bitmap.c
@@ -237,6 +237,14 @@ 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.
--
2.11.1
- [Qemu-devel] [PATCH v9 09/13] migration: add is_active_iterate handler, (continued)
- [Qemu-devel] [PATCH v9 09/13] migration: add is_active_iterate handler, Vladimir Sementsov-Ogievskiy, 2017/12/20
- [Qemu-devel] [PATCH v9 05/13] migration: introduce postcopy-only pending, Vladimir Sementsov-Ogievskiy, 2017/12/20
- [Qemu-devel] [PATCH v9 12/13] iotests: add dirty bitmap migration test, Vladimir Sementsov-Ogievskiy, 2017/12/20
- [Qemu-devel] [PATCH v9 13/13] iotests: add dirty bitmap postcopy test, Vladimir Sementsov-Ogievskiy, 2017/12/20
- [Qemu-devel] [PATCH v9 02/13] block/dirty-bitmap: fix locking in bdrv_reclaim_dirty_bitmap, Vladimir Sementsov-Ogievskiy, 2017/12/20
- [Qemu-devel] [PATCH v9 01/13] block/dirty-bitmap: add bdrv_dirty_bitmap_enable_successor(),
Vladimir Sementsov-Ogievskiy <=
- [Qemu-devel] [PATCH v9 10/13] migration: add postcopy migration of dirty bitmaps, Vladimir Sementsov-Ogievskiy, 2017/12/20