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block: Don't block_job_pause_all() in bdrv_drain_all() 

Block jobs are already paused using the BdrvChildRole drain callbacks,
so we don't need an additional block_job_pause_all() call.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2017-12-14 10:12:42 +01:00
parent 7253220de4
commit 8119334918
2 changed files with 4 additions and 10 deletions
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4
block/io.c
View File

@ -338,8 +338,6 @@ void bdrv_drain_all_begin(void)
* context. */
assert(qemu_get_current_aio_context() == qemu_get_aio_context());
block_job_pause_all();
for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
AioContext *aio_context = bdrv_get_aio_context(bs);
@ -395,8 +393,6 @@ void bdrv_drain_all_end(void)
aio_enable_external(aio_context);
aio_context_release(aio_context);
}
block_job_resume_all();
}
void bdrv_drain_all(void)

10
tests/test-bdrv-drain.c
View File

@ -284,9 +284,8 @@ static void test_blockjob_common(enum drain_type drain_type)
do_drain_begin(drain_type, src);
if (drain_type == BDRV_DRAIN_ALL) {
/* bdrv_drain_all() drains both src and target, and involves an
* additional block_job_pause_all() */
g_assert_cmpint(job->pause_count, ==, 3);
/* bdrv_drain_all() drains both src and target */
g_assert_cmpint(job->pause_count, ==, 2);
} else {
g_assert_cmpint(job->pause_count, ==, 1);
}
@ -303,9 +302,8 @@ static void test_blockjob_common(enum drain_type drain_type)
do_drain_begin(drain_type, target);
if (drain_type == BDRV_DRAIN_ALL) {
/* bdrv_drain_all() drains both src and target, and involves an
* additional block_job_pause_all() */
g_assert_cmpint(job->pause_count, ==, 3);
/* bdrv_drain_all() drains both src and target */
g_assert_cmpint(job->pause_count, ==, 2);
} else {
g_assert_cmpint(job->pause_count, ==, 1);
}