block: Reset buffer alignment on detach
BlockDriverState member buffer_alignment is initially 512. The device
model may set them, with bdrv_set_buffer_alignment(). If the device
model gets detached (hot unplug), the device's alignment is left
behind. Only okay because device hot unplug automatically destroys
the BlockDriverState. But that's a questionable feature, best not to
rely on it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff --git a/block.c b/block.c
index e986986..b006e58 100644
--- a/block.c
+++ b/block.c
@@ -788,6 +788,7 @@
bs->dev = NULL;
bs->dev_ops = NULL;
bs->dev_opaque = NULL;
+ bs->buffer_alignment = 512;
}
/* TODO change to return DeviceState * when all users are qdevified */
