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[Qemu-block] [PATCH] tests/test-bdrv-drain: Fix too late qemu_event_rese
From: |
Kevin Wolf |
Subject: |
[Qemu-block] [PATCH] tests/test-bdrv-drain: Fix too late qemu_event_reset() |
Date: |
Mon, 1 Oct 2018 17:10:53 +0200 |
qemu_event_reset() must be called before the AIO request in a different
iothread is submitted. Otherwise the request could be completed before
we do the qemu_event_reset() and the test would hang in
qemu_event_wait().
Signed-off-by: Kevin Wolf <address@hidden>
---
tests/test-bdrv-drain.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tests/test-bdrv-drain.c b/tests/test-bdrv-drain.c
index c9f29c8b10..ee1740ff06 100644
--- a/tests/test-bdrv-drain.c
+++ b/tests/test-bdrv-drain.c
@@ -694,6 +694,8 @@ static void test_iothread_common(enum drain_type
drain_type, int drain_thread)
s->bh_indirection_ctx = ctx_b;
aio_ret = -EINPROGRESS;
+ qemu_event_reset(&done_event);
+
if (drain_thread == 0) {
acb = blk_aio_preadv(blk, 0, &qiov, 0, test_iothread_aio_cb, &aio_ret);
} else {
@@ -723,7 +725,6 @@ static void test_iothread_common(enum drain_type
drain_type, int drain_thread)
* but the drain in this thread can continue immediately after
* bdrv_dec_in_flight() and aio_ret might be assigned only slightly
* later. */
- qemu_event_reset(&done_event);
do_drain_begin(drain_type, bs);
g_assert_cmpint(bs->in_flight, ==, 0);
@@ -743,7 +744,6 @@ static void test_iothread_common(enum drain_type
drain_type, int drain_thread)
}
break;
case 1:
- qemu_event_reset(&done_event);
aio_bh_schedule_oneshot(ctx_a, test_iothread_drain_entry, &data);
qemu_event_wait(&done_event);
break;
--
2.13.6
- [Qemu-block] [PATCH] tests/test-bdrv-drain: Fix too late qemu_event_reset(),
Kevin Wolf <=