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monitor: guard iothread access by mon->use_io_thread 

monitor_resume() and monitor_suspend() both want to
"kick" the I/O thread if it is there, but in
monitor_suspend() lacked the use_io_thread flag condition.
This is required when we later only spawn the thread on
first use.

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180925081507.11873-2-w.bumiller@proxmox.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Wolfgang Bumiller 2018-09-25 10:15:06 +02:00 committed by Markus Armbruster
parent 0ca70f19c0
commit 9a3e52e346
1 changed files with 1 additions and 1 deletions
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2
monitor.c
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@ -4292,7 +4292,7 @@ int monitor_suspend(Monitor *mon)
atomic_inc(&mon->suspend_cnt);
if (monitor_is_qmp(mon)) {
if (monitor_is_qmp(mon) && mon->use_io_thread) {
/*
* Kick I/O thread to make sure this takes effect. It'll be
* evaluated again in prepare() of the watch object.