def run():
sr_counts = count.get_sr_counts()
names = [k for k, v in sr_counts.iteritems() if v != 0]
srs = Subdigg._by_fullname(names)
for name in names:
sr,c = srs[name], sr_counts[name]
if c != sr._downs and c > 0:
sr._downs = max(c, 0)
sr._commit()
count.clear_sr_counts(names)
