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[Qemu-block] [PATCH v8 03/14] block/dirty-bitmap: add bdrv_dirty_bitmap_
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[Qemu-block] [PATCH v8 03/14] block/dirty-bitmap: add bdrv_dirty_bitmap_release_successor |
Date: |
Mon, 30 Oct 2017 19:32:58 +0300 |
To just release successor and unfreeze bitmap without any additional
work.
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
Signed-off-by: Denis V. Lunev <address@hidden>
---
include/block/dirty-bitmap.h | 2 ++
block/dirty-bitmap.c | 14 ++++++++++++++
2 files changed, 16 insertions(+)
diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h
index 93d4336505..a9e2a92e4f 100644
--- a/include/block/dirty-bitmap.h
+++ b/include/block/dirty-bitmap.h
@@ -20,6 +20,8 @@ BdrvDirtyBitmap *bdrv_dirty_bitmap_abdicate(BlockDriverState
*bs,
BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap(BlockDriverState *bs,
BdrvDirtyBitmap *bitmap,
Error **errp);
+void bdrv_dirty_bitmap_release_successor(BlockDriverState *bs,
+ BdrvDirtyBitmap *bitmap);
void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap);
BdrvDirtyBitmap *bdrv_find_dirty_bitmap(BlockDriverState *bs,
const char *name);
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
index 981f99d362..7578863aa1 100644
--- a/block/dirty-bitmap.c
+++ b/block/dirty-bitmap.c
@@ -431,6 +431,20 @@ void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap)
bitmap->disabled = false;
}
+/* Called with BQL taken. */
+void bdrv_dirty_bitmap_release_successor(BlockDriverState *bs,
+ BdrvDirtyBitmap *parent)
+{
+ qemu_mutex_lock(parent->mutex);
+
+ if (parent->successor) {
+ bdrv_release_dirty_bitmap_locked(bs, parent->successor);
+ parent->successor = NULL;
+ }
+
+ qemu_mutex_unlock(parent->mutex);
+}
+
BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs)
{
BdrvDirtyBitmap *bm;
--
2.11.1
- [Qemu-block] [PATCH v8 00/14] Dirty bitmaps postcopy migration, Vladimir Sementsov-Ogievskiy, 2017/10/30
- [Qemu-block] [PATCH v8 11/14] iotests: add default node-name, Vladimir Sementsov-Ogievskiy, 2017/10/30
- [Qemu-block] [PATCH v8 08/14] migration/qemu-file: add qemu_put_counted_string(), Vladimir Sementsov-Ogievskiy, 2017/10/30
- [Qemu-block] [PATCH v8 06/14] qapi: add dirty-bitmaps migration capability, Vladimir Sementsov-Ogievskiy, 2017/10/30
- [Qemu-block] [PATCH v8 13/14] iotests: add dirty bitmap postcopy test, Vladimir Sementsov-Ogievskiy, 2017/10/30
- [Qemu-block] [PATCH v8 03/14] block/dirty-bitmap: add bdrv_dirty_bitmap_release_successor,
Vladimir Sementsov-Ogievskiy <=
- [Qemu-block] [PATCH v8 01/14] block/dirty-bitmap: add bdrv_dirty_bitmap_enable_successor(), Vladimir Sementsov-Ogievskiy, 2017/10/30
- [Qemu-block] [PATCH v8 04/14] block/dirty-bitmap: add bdrv_dirty_bitmap_set_frozen, Vladimir Sementsov-Ogievskiy, 2017/10/30
- [Qemu-block] [PATCH v8 09/14] migration: add is_active_iterate handler, Vladimir Sementsov-Ogievskiy, 2017/10/30
- [Qemu-block] [PATCH v8 07/14] migration: include migrate_dirty_bitmaps in migrate_postcopy, Vladimir Sementsov-Ogievskiy, 2017/10/30
- [Qemu-block] [PATCH v8 14/14] iotests: add persistent bitmap migration test, Vladimir Sementsov-Ogievskiy, 2017/10/30
- [Qemu-block] [PATCH v8 12/14] iotests: add dirty bitmap migration test, Vladimir Sementsov-Ogievskiy, 2017/10/30
- [Qemu-block] [PATCH v8 02/14] block/dirty-bitmap: add locked version of bdrv_release_dirty_bitmap, Vladimir Sementsov-Ogievskiy, 2017/10/30
- [Qemu-block] [PATCH v8 10/14] migration: add postcopy migration of dirty bitmaps, Vladimir Sementsov-Ogievskiy, 2017/10/30
- [Qemu-block] [PATCH v8 05/14] migration: introduce postcopy-only pending, Vladimir Sementsov-Ogievskiy, 2017/10/30