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[PATCH v2 04/10] job: add .cancel handler for the driver
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[PATCH v2 04/10] job: add .cancel handler for the driver |
Date: |
Fri, 5 Feb 2021 19:37:14 +0300 |
To be used in mirror in the following commit to cancel in-flight io on
target to not waste the time.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
include/qemu/job.h | 5 +++++
job.c | 3 +++
2 files changed, 8 insertions(+)
diff --git a/include/qemu/job.h b/include/qemu/job.h
index 32aabb1c60..efc6fa7544 100644
--- a/include/qemu/job.h
+++ b/include/qemu/job.h
@@ -251,6 +251,11 @@ struct JobDriver {
*/
void (*clean)(Job *job);
+ /**
+ * If the callback is not NULL, it will be invoked in job_cancel_async
+ */
+ void (*cancel)(Job *job);
+
/** Called when the job is freed */
void (*free)(Job *job);
diff --git a/job.c b/job.c
index 3aaaebafe2..289edee143 100644
--- a/job.c
+++ b/job.c
@@ -715,6 +715,9 @@ static int job_finalize_single(Job *job)
static void job_cancel_async(Job *job, bool force)
{
+ if (job->driver->cancel) {
+ job->driver->cancel(job);
+ }
if (job->user_paused) {
/* Do not call job_enter here, the caller will handle it. */
if (job->driver->user_resume) {
--
2.29.2
- [PATCH v2 00/10] mirror: cancel nbd reconnect, Vladimir Sementsov-Ogievskiy, 2021/02/05
- [PATCH v2 01/10] block: add new BlockDriver handler: bdrv_cancel_in_flight, Vladimir Sementsov-Ogievskiy, 2021/02/05
- [PATCH v2 02/10] block/nbd: implement .bdrv_cancel_in_flight, Vladimir Sementsov-Ogievskiy, 2021/02/05
- [PATCH v2 10/10] iotests/264: add backup-cancel test-case, Vladimir Sementsov-Ogievskiy, 2021/02/05
- [PATCH v2 04/10] job: add .cancel handler for the driver,
Vladimir Sementsov-Ogievskiy <=
- [PATCH v2 05/10] block/mirror: implement .cancel job handler, Vladimir Sementsov-Ogievskiy, 2021/02/05
- [PATCH v2 06/10] iotests/264: move to python unittest, Vladimir Sementsov-Ogievskiy, 2021/02/05
- [PATCH v2 03/10] block/raw-format: implement .bdrv_cancel_in_flight handler, Vladimir Sementsov-Ogievskiy, 2021/02/05
- [PATCH v2 08/10] iotests/264: add mirror-cancel test-case, Vladimir Sementsov-Ogievskiy, 2021/02/05
- [PATCH v2 07/10] iotests.py: qemu_nbd_popen: remove pid file after use, Vladimir Sementsov-Ogievskiy, 2021/02/05
- [PATCH v2 09/10] block/backup: implement .cancel job handler, Vladimir Sementsov-Ogievskiy, 2021/02/05
- Re: [PATCH v2 00/10] mirror: cancel nbd reconnect, Eric Blake, 2021/02/12