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[PATCH v2 06/10] test-bdrv-drain.c: adapt test to support additional sub
From: |
Emanuele Giuseppe Esposito |
Subject: |
[PATCH v2 06/10] test-bdrv-drain.c: adapt test to support additional subtree drains |
Date: |
Mon, 14 Mar 2022 09:18:50 -0400 |
There will be a problem in this test when we will add
subtree drains in bdrv_replace_child_noperm:
test_detach_indirect is only interested in observing the first
call to .drained_begin. In the original test, there was only a single
subtree drain; however, with additional drains introduced in
bdrv_replace_child_noperm(), the test callback would be called too early
and/or multiple times.
Override the callback only when we actually want to use it, and put back
the original after it's been invoked.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
---
tests/unit/test-bdrv-drain.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/tests/unit/test-bdrv-drain.c b/tests/unit/test-bdrv-drain.c
index 36be84ae55..f750ddfc4e 100644
--- a/tests/unit/test-bdrv-drain.c
+++ b/tests/unit/test-bdrv-drain.c
@@ -1320,15 +1320,18 @@ static void detach_by_parent_aio_cb(void *opaque, int
ret)
}
}
+static BdrvChildClass detach_by_driver_cb_class;
+
static void detach_by_driver_cb_drained_begin(BdrvChild *child)
{
+ /* restore .drained_begin cb, we don't need it anymore. */
+ detach_by_driver_cb_class.drained_begin = child_of_bds.drained_begin;
+
aio_bh_schedule_oneshot(qemu_get_current_aio_context(),
detach_indirect_bh, &detach_by_parent_data);
child_of_bds.drained_begin(child);
}
-static BdrvChildClass detach_by_driver_cb_class;
-
/*
* Initial graph:
*
@@ -1360,8 +1363,6 @@ static void test_detach_indirect(bool by_parent_cb)
if (!by_parent_cb) {
detach_by_driver_cb_class = child_of_bds;
- detach_by_driver_cb_class.drained_begin =
- detach_by_driver_cb_drained_begin;
}
/* Create all involved nodes */
@@ -1419,6 +1420,12 @@ static void test_detach_indirect(bool by_parent_cb)
acb = blk_aio_preadv(blk, 0, &qiov, 0, detach_by_parent_aio_cb, NULL);
g_assert(acb != NULL);
+ if (!by_parent_cb) {
+ /* set .drained_begin cb to run only in the following drain. */
+ detach_by_driver_cb_class.drained_begin =
+ detach_by_driver_cb_drained_begin;
+ }
+
/* Drain and check the expected result */
bdrv_subtree_drained_begin(parent_b);
--
2.31.1
- [PATCH v2 00/10] block: bug fixes in preparation of AioContext removal, Emanuele Giuseppe Esposito, 2022/03/14
- [PATCH v2 03/10] block/io.c: fix bdrv_child_cb_drained_begin invocations from a coroutine, Emanuele Giuseppe Esposito, 2022/03/14
- [PATCH v2 07/10] test-bdrv-drain.c: remove test_detach_by_parent_cb(), Emanuele Giuseppe Esposito, 2022/03/14
- [PATCH v2 06/10] test-bdrv-drain.c: adapt test to support additional subtree drains,
Emanuele Giuseppe Esposito <=
- [PATCH v2 05/10] block.c: bdrv_replace_child_noperm: first call ->attach(), and then add child, Emanuele Giuseppe Esposito, 2022/03/14
- [PATCH v2 01/10] drains: create bh only when polling, Emanuele Giuseppe Esposito, 2022/03/14
- [PATCH v2 09/10] child_job_drained_poll: override polling condition only when in home thread, Emanuele Giuseppe Esposito, 2022/03/14
- [PATCH v2 10/10] tests/qemu-iotests/030: test_stream_parallel should use auto_finalize=False, Emanuele Giuseppe Esposito, 2022/03/14
- [PATCH v2 02/10] bdrv_parent_drained_begin_single: handle calls from coroutine context, Emanuele Giuseppe Esposito, 2022/03/14
- [PATCH v2 08/10] tests/unit/test-bdrv-drain.c: graph setup functions can't run in coroutines, Emanuele Giuseppe Esposito, 2022/03/14
- [PATCH v2 04/10] block.c: bdrv_replace_child_noperm: first remove the child, and then call ->detach(), Emanuele Giuseppe Esposito, 2022/03/14