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migration: Use cmpxchg correctly 

cmpxchg returns the old value

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Juan Quintela 2015-06-17 02:06:20 +02:00
parent 61964c23e5
commit a5c17b5f68
1 changed files with 1 additions and 1 deletions
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2
migration/migration.c
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@ -509,7 +509,7 @@ void qmp_migrate_set_parameters(bool has_compress_level,
static void migrate_set_state(MigrationState *s, int old_state, int new_state)
{
if (atomic_cmpxchg(&s->state, old_state, new_state) == new_state) {
if (atomic_cmpxchg(&s->state, old_state, new_state) == old_state) {
trace_migrate_set_state(new_state);
}
}