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migration: introduce lock for to_dst_file

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Let's introduce a lock for that QEMUFile since we are going to operate
on it in multiple threads.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180502104740.12123-23-peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Peter Xu 2018-05-02 18:47:38 +08:00 • committed by Juan Quintela
parent 3b563c4be0
commit 62df066fff
3 changed files with 27 additions and 4 deletions
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3
migration/channel.c
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@ -74,8 +74,9 @@ void migration_channel_connect(MigrationState *s,
} else {
QEMUFile *f = qemu_fopen_channel_output(ioc);
qemu_mutex_lock(&s->qemu_file_lock);
s->to_dst_file = f;
qemu_mutex_unlock(&s->qemu_file_lock);
}
}
migrate_fd_connect(s, error);