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[PULL 05/51] qed: Don't yield in bdrv_qed_co_drain_begin()
From: |
Kevin Wolf |
Subject: |
[PULL 05/51] qed: Don't yield in bdrv_qed_co_drain_begin() |
Date: |
Wed, 14 Dec 2022 14:44:07 +0100 |
We want to change .bdrv_co_drained_begin() back to be a non-coroutine
callback, so in preparation, avoid yielding in its implementation.
Because we increase bs->in_flight and bdrv_drained_begin() polls, the
behaviour is unchanged.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20221118174110.55183-2-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block/qed.c | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)
diff --git a/block/qed.c b/block/qed.c
index 2f36ad342c..013f826c44 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -282,9 +282,8 @@ static void coroutine_fn
qed_unplug_allocating_write_reqs(BDRVQEDState *s)
qemu_co_mutex_unlock(&s->table_lock);
}
-static void coroutine_fn qed_need_check_timer_entry(void *opaque)
+static void coroutine_fn qed_need_check_timer(BDRVQEDState *s)
{
- BDRVQEDState *s = opaque;
int ret;
trace_qed_need_check_timer_cb(s);
@@ -310,9 +309,20 @@ static void coroutine_fn qed_need_check_timer_entry(void
*opaque)
(void) ret;
}
+static void coroutine_fn qed_need_check_timer_entry(void *opaque)
+{
+ BDRVQEDState *s = opaque;
+
+ qed_need_check_timer(opaque);
+ bdrv_dec_in_flight(s->bs);
+}
+
static void qed_need_check_timer_cb(void *opaque)
{
+ BDRVQEDState *s = opaque;
Coroutine *co = qemu_coroutine_create(qed_need_check_timer_entry, opaque);
+
+ bdrv_inc_in_flight(s->bs);
qemu_coroutine_enter(co);
}
@@ -363,8 +373,12 @@ static void coroutine_fn
bdrv_qed_co_drain_begin(BlockDriverState *bs)
* header is flushed.
*/
if (s->need_check_timer && timer_pending(s->need_check_timer)) {
+ Coroutine *co;
+
qed_cancel_need_check_timer(s);
- qed_need_check_timer_entry(s);
+ co = qemu_coroutine_create(qed_need_check_timer_entry, s);
+ bdrv_inc_in_flight(bs);
+ aio_co_enter(bdrv_get_aio_context(bs), co);
}
}
--
2.38.1
- [PULL 00/51] Block layer patches, Kevin Wolf, 2022/12/14
- [PULL 08/51] block: Remove drained_end_counter, Kevin Wolf, 2022/12/14
- [PULL 02/51] block: drop bdrv_remove_filter_or_cow_child, Kevin Wolf, 2022/12/14
- [PULL 05/51] qed: Don't yield in bdrv_qed_co_drain_begin(),
Kevin Wolf <=
- [PULL 07/51] block: Revert .bdrv_drained_begin/end to non-coroutine_fn, Kevin Wolf, 2022/12/14
- [PULL 03/51] block: bdrv_refresh_perms(): allow external tran, Kevin Wolf, 2022/12/14
- [PULL 04/51] block: refactor bdrv_list_refresh_perms to allow any list of nodes, Kevin Wolf, 2022/12/14
- [PULL 12/51] block: Don't use subtree drains in bdrv_drop_intermediate(), Kevin Wolf, 2022/12/14
- [PULL 15/51] block: Call drain callbacks only once, Kevin Wolf, 2022/12/14
- [PULL 13/51] stream: Replace subtree drain with a single node drain, Kevin Wolf, 2022/12/14
- [PULL 19/51] block: Remove poll parameter from bdrv_parent_drained_begin_single(), Kevin Wolf, 2022/12/14
- [PULL 01/51] block: Inline bdrv_detach_child(), Kevin Wolf, 2022/12/14
- [PULL 10/51] block: Fix locking for bdrv_reopen_queue_child(), Kevin Wolf, 2022/12/14
- [PULL 09/51] block: Inline bdrv_drain_invoke(), Kevin Wolf, 2022/12/14