cgroup: introduce cancel_attach()
authorDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Wed, 10 Mar 2010 23:22:03 +0000 (15:22 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 12 Mar 2010 23:52:35 +0000 (15:52 -0800)
commit2468c7234b366eeb799ee0648cb58f9cba394a54
tree050d7ea224b975eb71b05bf472f14f4c7bb13670
parent5ce9f07bf1bed9a1f9886373ad0b149294f84c25
cgroup: introduce cancel_attach()

Add cancel_attach() operation to struct cgroup_subsys.  cancel_attach()
can be used when can_attach() operation prepares something for the subsys,
but we should rollback what can_attach() operation has prepared if attach
task fails after we've succeeded in can_attach().

Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Acked-by: Li Zefan <lizf@cn.fujitsu.com>
Reviewed-by: Paul Menage <menage@google.com>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Documentation/cgroups/cgroups.txt
include/linux/cgroup.h
kernel/cgroup.c