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block/block-copy: make progress_bytes_callback optional

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We are going to stop use of this callback in the following commit.
Still the callback handling code will be dropped in a separate commit.
So, for now let's make it optional.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210116214705.822267-16-vsementsov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2021-01-17 00:46:57 +03:00 committed by Max Reitz
parent 2d0f32e3fc
commit d51590fc3e
1 changed files with 3 additions and 1 deletions
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4
block/block-copy.c
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@ -454,7 +454,9 @@ static coroutine_fn int block_copy_task_entry(AioTask *task)
t->call_state->error_is_read = error_is_read;
} else {
progress_work_done(t->s->progress, t->bytes);
t->s->progress_bytes_callback(t->bytes, t->s->progress_opaque);
if (t->s->progress_bytes_callback) {
t->s->progress_bytes_callback(t->bytes, t->s->progress_opaque);
}
}
co_put_to_shres(t->s->mem, t->bytes);
block_copy_task_end(t, ret);