block: Add list of all BlockDriverStates

We need this list so that bdrv_close_all() can keep track of which BDSs
are still open after having removed the BDSs from all of the BBs and
having released all monitor BDS references.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/block.c b/block.c
index e076f1004a..d687d2c2b6 100644
--- a/block.c
+++ b/block.c
@@ -79,6 +79,9 @@ struct BdrvStates bdrv_states = QTAILQ_HEAD_INITIALIZER(bdrv_states);
 static QTAILQ_HEAD(, BlockDriverState) graph_bdrv_states =
     QTAILQ_HEAD_INITIALIZER(graph_bdrv_states);
 
+static QTAILQ_HEAD(, BlockDriverState) all_bdrv_states =
+    QTAILQ_HEAD_INITIALIZER(all_bdrv_states);
+
 static QLIST_HEAD(, BlockDriver) bdrv_drivers =
     QLIST_HEAD_INITIALIZER(bdrv_drivers);
 
@@ -267,6 +270,8 @@ BlockDriverState *bdrv_new(void)
     bs->refcnt = 1;
     bs->aio_context = qemu_get_aio_context();
 
+    QTAILQ_INSERT_TAIL(&all_bdrv_states, bs, bs_list);
+
     return bs;
 }
 
@@ -2371,6 +2376,8 @@ static void bdrv_delete(BlockDriverState *bs)
     /* remove from list, if necessary */
     bdrv_make_anon(bs);
 
+    QTAILQ_REMOVE(&all_bdrv_states, bs, bs_list);
+
     g_free(bs);
 }