Instead of only sleeping for 0ms when we've hit a timeout, optionally
take a longer more explicit delay_ns that always forces the sleep.
Signed-off-by: John Snow
---
block/mirror.c | 4 ++--
blockjob.c | 9 -
include/block/blockjob_int.h | 10 +++---
3 files changed, 13 insertions(+), 10 deletions(-)
diff --git a/block/mirror.c b/block/mirror.c
index 36c681c7a1..3c73caed5e 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -610,7 +610,7 @@ static int coroutine_fn mirror_dirty_init(MirrorBlockJob *s)
int bytes = MIN(s->bdev_length - offset,
QEMU_ALIGN_DOWN(INT_MAX, s->granularity));
-block_job_relax(&s->common);
+block_job_relax(&s->common, 0);
if (block_job_is_cancelled(&s->common)) {
s->initial_zeroing_ongoing = false;
@@ -638,7 +638,7 @@ static int coroutine_fn mirror_dirty_init(MirrorBlockJob *s)
int bytes = MIN(s->bdev_length - offset,
QEMU_ALIGN_DOWN(INT_MAX, s->granularity));
-block_job_relax(&s->common);
+block_job_relax(&s->common, 0);
if (block_job_is_cancelled(&s->common)) {
return 0;
diff --git a/blockjob.c b/blockjob.c
index 6f2e709b51..51c0eb5d9e 100644
--- a/blockjob.c
+++ b/blockjob.c
@@ -906,12 +906,11 @@ void block_job_yield(BlockJob *job)
block_job_pause_point(job);
}
-void block_job_relax(BlockJob *job)
+void block_job_relax(BlockJob *job, int64_t delay_ns)
{
-int64_t now = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
-
-if (now - job->last_enter_ns > SLICE_TIME) {
-block_job_sleep_ns(job, 0);
+if (delay_ns || (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - \
+ job->last_enter_ns > SLICE_TIME)) {
+block_job_sleep_ns(job, delay_ns);
} else {
block_job_pause_point(job);
}
diff --git a/include/block/blockjob_int.h b/include/block/blockjob_int.h
index 553784d86f..5f1520fab7 100644
--- a/include/block/blockjob_int.h
+++ b/include/block/blockjob_int.h
@@ -160,11 +160,15 @@ void block_job_yield(BlockJob *job);
/**
* block_job_relax:
* @job: The job that calls the function.
+ * @delay_ns: The amount of time to sleep for
*
- * Yield if it has been SLICE_TIME nanoseconds since the last yield.
- * Otherwise, check if we need to pause, and yield if so.
+ * Sleep for delay_ns nanoseconds.
+ *
+ * If delay_ns is 0, yield if it has been SLICE_TIME
+ * nanoseconds since the last yield. Otherwise, check
+ * if we need to yield for a pause event.
*/
-void block_job_relax(BlockJob *job);
+void block_job_relax(BlockJob *job, int64_t delay_ns);
/**
* block_job_pause_all:
--
2.14.3