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-rw-r--r--block.c10
-rw-r--r--block/block-backend.c8
-rw-r--r--block/mirror.c4
-rw-r--r--blockdev.c16
-rw-r--r--include/block/block_int.h3
5 files changed, 12 insertions, 29 deletions
diff --git a/block.c b/block.c
index 91bf43188f..cbc10f7480 100644
--- a/block.c
+++ b/block.c
@@ -2226,14 +2226,6 @@ static void change_parent_backing_link(BlockDriverState *from,
{
BdrvChild *c, *next;
- if (from->blk) {
- /* FIXME We bypass blk_set_bs(), so we need to make these updates
- * manually. The root problem is not in this change function, but the
- * existence of BlockDriverState.blk. */
- to->blk = from->blk;
- from->blk = NULL;
- }
-
QLIST_FOREACH_SAFE(c, &from->parents, next_parent, next) {
assert(c->role != &child_backing);
c->bs = to;
@@ -2875,7 +2867,7 @@ const char *bdrv_get_node_name(const BlockDriverState *bs)
return bs->node_name;
}
-static const char *bdrv_get_parent_name(const BlockDriverState *bs)
+const char *bdrv_get_parent_name(const BlockDriverState *bs)
{
BdrvChild *c;
const char *name;
diff --git a/block/block-backend.c b/block/block-backend.c
index 7f2eeb0559..6928d61de4 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -152,7 +152,6 @@ BlockBackend *blk_new_with_bs(Error **errp)
bs = bdrv_new_root();
blk->root = bdrv_root_attach_child(bs, "root", &child_root);
blk->root->opaque = blk;
- bs->blk = blk;
return blk;
}
@@ -422,12 +421,10 @@ static BlockBackend *bdrv_first_blk(BlockDriverState *bs)
BdrvChild *child;
QLIST_FOREACH(child, &bs->parents, next_parent) {
if (child->role == &child_root) {
- assert(bs->blk);
return child->opaque;
}
}
- assert(!bs->blk);
return NULL;
}
@@ -495,8 +492,6 @@ BlockBackend *blk_by_public(BlockBackendPublic *public)
*/
void blk_remove_bs(BlockBackend *blk)
{
- assert(blk->root->bs->blk == blk);
-
notifier_list_notify(&blk->remove_bs_notifiers, blk);
if (blk->public.throttle_state) {
throttle_timers_detach_aio_context(&blk->public.throttle_timers);
@@ -504,7 +499,6 @@ void blk_remove_bs(BlockBackend *blk)
blk_update_root_state(blk);
- blk->root->bs->blk = NULL;
bdrv_root_unref_child(blk->root);
blk->root = NULL;
}
@@ -514,11 +508,9 @@ void blk_remove_bs(BlockBackend *blk)
*/
void blk_insert_bs(BlockBackend *blk, BlockDriverState *bs)
{
- assert(!blk->root && !bs->blk);
bdrv_ref(bs);
blk->root = bdrv_root_attach_child(bs, "root", &child_root);
blk->root->opaque = blk;
- bs->blk = blk;
notifier_list_notify(&blk->insert_bs_notifiers, blk);
if (blk->public.throttle_state) {
diff --git a/block/mirror.c b/block/mirror.c
index 71d7a4e357..b9986d8218 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -468,7 +468,7 @@ static void mirror_exit(BlockJob *job, void *opaque)
/* This was checked in mirror_start_job(), but meanwhile one of the
* nodes could have been newly attached to a BlockBackend. */
- if (to_replace->blk && s->target->blk) {
+ if (bdrv_has_blk(to_replace) && bdrv_has_blk(s->target)) {
error_report("block job: Can't create node with two BlockBackends");
data->ret = -EINVAL;
goto out;
@@ -831,7 +831,7 @@ static void mirror_start_job(BlockDriverState *bs, BlockDriverState *target,
} else {
replaced_bs = bs;
}
- if (replaced_bs->blk && target->blk) {
+ if (bdrv_has_blk(replaced_bs) && bdrv_has_blk(target)) {
error_setg(errp, "Can't create node with two BlockBackends");
return;
}
diff --git a/blockdev.c b/blockdev.c
index 442ca8d19d..b6fa210249 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1776,9 +1776,9 @@ static void external_snapshot_prepare(BlkActionState *common,
return;
}
- if (state->new_bs->blk != NULL) {
+ if (bdrv_has_blk(state->new_bs)) {
error_setg(errp, "The snapshot is already in use by %s",
- blk_name(state->new_bs->blk));
+ bdrv_get_parent_name(state->new_bs));
return;
}
@@ -2494,9 +2494,9 @@ void qmp_x_blockdev_insert_medium(const char *device, const char *node_name,
return;
}
- if (bs->blk) {
+ if (bdrv_has_blk(bs)) {
error_setg(errp, "Node '%s' is already in use by '%s'", node_name,
- blk_name(bs->blk));
+ bdrv_get_parent_name(bs));
return;
}
@@ -3441,7 +3441,7 @@ static void blockdev_mirror_common(BlockDriverState *bs,
if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) {
return;
}
- if (target->blk) {
+ if (bdrv_has_blk(target)) {
error_setg(errp, "Cannot mirror to an attached block device");
return;
}
@@ -4030,15 +4030,15 @@ void qmp_x_blockdev_del(bool has_id, const char *id,
bs = blk_bs(blk);
aio_context = blk_get_aio_context(blk);
} else {
+ blk = NULL;
bs = bdrv_find_node(node_name);
if (!bs) {
error_setg(errp, "Cannot find node %s", node_name);
return;
}
- blk = bs->blk;
- if (blk) {
+ if (bdrv_has_blk(bs)) {
error_setg(errp, "Node %s is in use by %s",
- node_name, blk_name(blk));
+ node_name, bdrv_get_parent_name(bs));
return;
}
aio_context = bdrv_get_aio_context(bs);
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 80e2da519a..b6f4755725 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -418,8 +418,6 @@ struct BlockDriverState {
BlockDriver *drv; /* NULL means no media */
void *opaque;
- BlockBackend *blk; /* owning backend, if any */
-
AioContext *aio_context; /* event loop used for fd handlers, timers, etc */
/* long-running tasks intended to always use the same AioContext as this
* BDS may register themselves in this list to be notified of changes
@@ -724,6 +722,7 @@ BdrvChild *bdrv_root_attach_child(BlockDriverState *child_bs,
const BdrvChildRole *child_role);
void bdrv_root_unref_child(BdrvChild *child);
+const char *bdrv_get_parent_name(const BlockDriverState *bs);
void blk_dev_change_media_cb(BlockBackend *blk, bool load);
bool blk_dev_has_removable_media(BlockBackend *blk);
bool blk_dev_has_tray(BlockBackend *blk);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-30 07:09:35 +0000