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authorFam Zheng <famz@redhat.com>2016-02-02 10:12:24 +0800
committerStefan Hajnoczi <stefanha@redhat.com>2016-02-09 13:52:26 +0000
commit794f01414f9f4c4d0c6f1961154674961941c197 (patch)
treea2fb49a44557ac1899e2c37c591a4a5e763edea4 /tests/vhost-user-bridge.c
parentad523bca56a7202d2498c550a41be5c986c4d33c (diff)
blockjob: Fix hang in block_job_finish_sync
With a mirror job running on a virtio-blk dataplane disk, sending "q" to HMP will cause a dead loop in block_job_finish_sync. This is because the aio_poll() only processes the AIO context of bs which has no more work to do, while the main loop BH that is scheduled for setting the job->completed flag is never processed. Fix this by adding a flag in BlockJob structure, to track which context to poll for the block job to make progress. Its value is set to true when block_job_coroutine_complete() is called, and is checked in block_job_finish_sync to determine which context to poll. Suggested-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1454379144-29807-1-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'tests/vhost-user-bridge.c')
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