memcg: add mem_cgroup_cancel_charge()
authorDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Wed, 16 Dec 2009 00:47:10 +0000 (16:47 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 16 Dec 2009 15:20:07 +0000 (07:20 -0800)
commita3032a2c15c6967f9f0c0c28375b1a5c833a3112
tree32d279856032fd9d84ebd5d6746b2bd382baaac9
parentd8046582d5ee24448800e71c6933fdb6813aa062
memcg: add mem_cgroup_cancel_charge()

There are some places calling both res_counter_uncharge() and css_put() to
cancel the charge and the refcnt we have got by mem_cgroup_tyr_charge().

This patch introduces mem_cgroup_cancel_charge() and call it in those
places.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Reviewed-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/memcontrol.c