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[Qemu-block] [PULL 1/2] block: for jobs, do not clear user_paused until

From: Jeff Cody
Subject: [Qemu-block] [PULL 1/2] block: for jobs, do not clear user_paused until after the resume
Date: Tue, 21 Aug 2018 23:43:18 -0400

The function job_cancel_async() will always cause an assert for blockjob
user resume.  We set job->user_paused to false, and then call
job->driver->user_resume().  In the case of blockjobs, this is the
block_job_user_resume() function.

In that function, we assert that job.user_paused is set to true.
Unfortunately, right before calling this function, it has explicitly
been set to false.

The fix is pretty simple: set job->user_paused to false only after the
job user_resume() function has been called.

Reviewed-by: John Snow <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Signed-off-by: Jeff Cody <address@hidden>
Message-id: address@hidden
Signed-off-by: Jeff Cody <address@hidden>
 job.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/job.c b/job.c
index fa671b431a..e36ebaafd8 100644
--- a/job.c
+++ b/job.c
@@ -732,10 +732,10 @@ static void job_cancel_async(Job *job, bool force)
     if (job->user_paused) {
         /* Do not call job_enter here, the caller will handle it.  */
-        job->user_paused = false;
         if (job->driver->user_resume) {
+        job->user_paused = false;
         assert(job->pause_count > 0);

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