diff options
Diffstat (limited to 'block.c')
| -rw-r--r-- | block.c | 27 |
1 files changed, 20 insertions, 7 deletions
@@ -85,6 +85,7 @@ static void bdrv_inherited_options(BdrvChildRole role, bool parent_is_format, int *child_flags, QDict *child_options, int parent_flags, QDict *parent_options); static void bdrv_child_cb_attach(BdrvChild *child); +static void bdrv_child_cb_detach(BdrvChild *child); /* If non-zero, use only whitelisted block drivers */ static int use_bdrv_whitelist; @@ -1100,12 +1101,6 @@ static void bdrv_child_cb_drained_end(BdrvChild *child, bdrv_drained_end_no_poll(bs, drained_end_counter); } -static void bdrv_child_cb_detach(BdrvChild *child) -{ - BlockDriverState *bs = child->opaque; - bdrv_unapply_subtree_drain(child, bs); -} - static int bdrv_child_cb_inactivate(BdrvChild *child) { BlockDriverState *bs = child->opaque; @@ -1266,7 +1261,14 @@ static void bdrv_backing_detach(BdrvChild *c) bdrv_op_unblock_all(c->bs, parent->backing_blocker); error_free(parent->backing_blocker); parent->backing_blocker = NULL; +} +/* XXX: Will be removed along with child_backing */ +static void bdrv_child_cb_detach_backing(BdrvChild *c) +{ + if (!(c->role & BDRV_CHILD_COW)) { + bdrv_backing_detach(c); + } bdrv_child_cb_detach(c); } @@ -1314,7 +1316,7 @@ const BdrvChildClass child_backing = { .parent_is_bds = true, .get_parent_desc = bdrv_child_get_parent_desc, .attach = bdrv_child_cb_attach_backing, - .detach = bdrv_backing_detach, + .detach = bdrv_child_cb_detach_backing, .inherit_options = bdrv_backing_options, .drained_begin = bdrv_child_cb_drained_begin, .drained_poll = bdrv_child_cb_drained_poll, @@ -1416,6 +1418,17 @@ static void bdrv_child_cb_attach(BdrvChild *child) bdrv_apply_subtree_drain(child, bs); } +static void bdrv_child_cb_detach(BdrvChild *child) +{ + BlockDriverState *bs = child->opaque; + + if (child->role & BDRV_CHILD_COW) { + bdrv_backing_detach(child); + } + + bdrv_unapply_subtree_drain(child, bs); +} + static int bdrv_open_flags(BlockDriverState *bs, int flags) { int open_flags = flags; |