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[PATCH 01/22] test-bdrv-drain: Don't call bdrv_graph_wrlock() in corouti
From: |
Kevin Wolf |
Subject: |
[PATCH 01/22] test-bdrv-drain: Don't call bdrv_graph_wrlock() in coroutine context |
Date: |
Fri, 29 Sep 2023 16:51:36 +0200 |
AIO callbacks are effectively coroutine_mixed_fn. If AIO requests don't
return immediately, their callback is called from the request coroutine.
This means that in AIO callbacks, we can't call no_coroutine_fns such as
bdrv_graph_wrlock(). Unfortunately test-bdrv-drain does so.
Change the test to use a BH to drop out of coroutine context, and add
coroutine_mixed_fn and no_coroutine_fn markers to clarify the context
each function runs in.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
tests/unit/test-bdrv-drain.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/tests/unit/test-bdrv-drain.c b/tests/unit/test-bdrv-drain.c
index 0b603e7c57..bdd3757615 100644
--- a/tests/unit/test-bdrv-drain.c
+++ b/tests/unit/test-bdrv-drain.c
@@ -1168,7 +1168,7 @@ struct detach_by_parent_data {
};
static struct detach_by_parent_data detach_by_parent_data;
-static void detach_indirect_bh(void *opaque)
+static void no_coroutine_fn detach_indirect_bh(void *opaque)
{
struct detach_by_parent_data *data = opaque;
@@ -1184,14 +1184,15 @@ static void detach_indirect_bh(void *opaque)
bdrv_graph_wrunlock();
}
-static void detach_by_parent_aio_cb(void *opaque, int ret)
+static void coroutine_mixed_fn detach_by_parent_aio_cb(void *opaque, int ret)
{
struct detach_by_parent_data *data = &detach_by_parent_data;
g_assert_cmpint(ret, ==, 0);
if (data->by_parent_cb) {
bdrv_inc_in_flight(data->child_b->bs);
- detach_indirect_bh(data);
+ aio_bh_schedule_oneshot(qemu_get_current_aio_context(),
+ detach_indirect_bh, &detach_by_parent_data);
}
}
--
2.41.0
- [PATCH 00/22] block: Graph locking part 5 (protect children/parent links), Kevin Wolf, 2023/09/29
- [PATCH 03/22] block: Take graph rdlock in bdrv_inactivate_all(), Kevin Wolf, 2023/09/29
- [PATCH 02/22] block-coroutine-wrapper: Add no_co_wrapper_bdrv_rdlock functions, Kevin Wolf, 2023/09/29
- [PATCH 01/22] test-bdrv-drain: Don't call bdrv_graph_wrlock() in coroutine context,
Kevin Wolf <=
- [PATCH 05/22] block: Mark drain related functions GRAPH_RDLOCK, Kevin Wolf, 2023/09/29
- [PATCH 04/22] block: Mark bdrv_first_blk() and bdrv_is_root_node() GRAPH_RDLOCK, Kevin Wolf, 2023/09/29
- [PATCH 07/22] block: Mark bdrv_snapshot_fallback() and callers GRAPH_RDLOCK, Kevin Wolf, 2023/09/29
- [PATCH 06/22] block: Mark bdrv_parent_cb_resize() and callers GRAPH_RDLOCK, Kevin Wolf, 2023/09/29
- [PATCH 08/22] block: Take graph rdlock in parts of reopen, Kevin Wolf, 2023/09/29
- [PATCH 09/22] block: Mark bdrv_get_xdbg_block_graph() and callers GRAPH_RDLOCK, Kevin Wolf, 2023/09/29
- [PATCH 10/22] block: Mark bdrv_refresh_filename() and callers GRAPH_RDLOCK, Kevin Wolf, 2023/09/29
- [PATCH 12/22] block: Mark bdrv_get_parent_name() and callers GRAPH_RDLOCK, Kevin Wolf, 2023/09/29
- [PATCH 13/22] block: Mark bdrv_amend_options() and callers GRAPH_RDLOCK, Kevin Wolf, 2023/09/29
- [PATCH 15/22] qcow2: Mark qcow2_inactivate() and callers GRAPH_RDLOCK, Kevin Wolf, 2023/09/29