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| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2018-03-13 15:33:59 -0400 |
|---|---|---|
| committer | John Snow <jsnow@redhat.com> | 2018-03-13 15:33:59 -0400 |
| commit | e73a265e9f0fe4dfa376bffe78f121b85c7a5a03 (patch) | |
| tree | 2690c3c7c839439dfd07b207eb3cf69df67d628b | |
| parent | 026aaf47c02b79036feb830206cfebb2a726510d (diff) | |
| download | qemu-e73a265e9f0fe4dfa376bffe78f121b85c7a5a03.zip qemu-e73a265e9f0fe4dfa376bffe78f121b85c7a5a03.tar.gz qemu-e73a265e9f0fe4dfa376bffe78f121b85c7a5a03.tar.bz2 | |
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>
| -rw-r--r-- | block/dirty-bitmap.c | 8 | ||||
| -rw-r--r-- | include/block/dirty-bitmap.h | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c index 909f051..0d0e807 100644 --- a/block/dirty-bitmap.c +++ b/block/dirty-bitmap.c @@ -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. diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h index 09efec6..e0ebc96 100644 --- a/include/block/dirty-bitmap.h +++ b/include/block/dirty-bitmap.h @@ -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); |