From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43207) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e9D08-0006LF-I8 for qemu-devel@nongnu.org; Mon, 30 Oct 2017 12:33:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e9D03-0006c7-Fd for qemu-devel@nongnu.org; Mon, 30 Oct 2017 12:33:24 -0400 From: Vladimir Sementsov-Ogievskiy Date: Mon, 30 Oct 2017 19:32:56 +0300 Message-Id: <20171030163309.75770-2-vsementsov@virtuozzo.com> In-Reply-To: <20171030163309.75770-1-vsementsov@virtuozzo.com> References: <20171030163309.75770-1-vsementsov@virtuozzo.com> Subject: [Qemu-devel] [PATCH v8 01/14] block/dirty-bitmap: add bdrv_dirty_bitmap_enable_successor() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org, qemu-devel@nongnu.org Cc: pbonzini@redhat.com, armbru@redhat.com, eblake@redhat.com, famz@redhat.com, stefanha@redhat.com, amit.shah@redhat.com, quintela@redhat.com, mreitz@redhat.com, kwolf@redhat.com, peter.maydell@linaro.org, dgilbert@redhat.com, den@openvz.org, jsnow@redhat.com, vsementsov@virtuozzo.com, lirans@il.ibm.com Enabling bitmap successor is necessary to enable successors of bitmaps being migrated before target vm start. Signed-off-by: Vladimir Sementsov-Ogievskiy --- 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