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blockjob: add set_speed to BlockJobDriver

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We are going to use async block-copy call in backup, so we'll need to
passthrough setting backup speed to block-copy call.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210116214705.822267-9-vsementsov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2021-01-17 00:46:50 +03:00 committed by Max Reitz
parent a6d23d56df
commit e0323a045f
2 changed files with 8 additions and 0 deletions
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6
blockjob.c
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@ -256,6 +256,7 @@ static bool job_timer_pending(Job *job)
void block_job_set_speed(BlockJob *job, int64_t speed, Error **errp)
{
const BlockJobDriver *drv = block_job_driver(job);
int64_t old_speed = job->speed;
if (job_apply_verb(&job->job, JOB_VERB_SET_SPEED, errp)) {
@ -270,6 +271,11 @@ void block_job_set_speed(BlockJob *job, int64_t speed, Error **errp)
ratelimit_set_speed(&job->limit, speed, BLOCK_JOB_SLICE_TIME);
job->speed = speed;
if (drv->set_speed) {
drv->set_speed(job, speed);
}
if (speed && speed <= old_speed) {
return;
}

2
include/block/blockjob_int.h
View File

@ -52,6 +52,8 @@ struct BlockJobDriver {
* besides job->blk to the new AioContext.
*/
void (*attached_aio_context)(BlockJob *job, AioContext *new_context);
void (*set_speed)(BlockJob *job, int64_t speed);
};
/**