Description: mm: memcg: Correct unregistring of events attached to the same eventfd
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=800813
Notes:
Bugs:
upstream: released (3.3-rc5) [71528caec553785c37f73fa3926ea0de84f986f]
2.6.32-upstream-stable: N/A "Introduced in 2.6.34"
sid: released (3.2.10-1)
2.6.32-squeeze-security: N/A "Introduced in 2.6.34"