Messages in this thread | | | Date | Tue, 1 Mar 2016 12:06:52 -0500 | From | Tejun Heo <> | Subject | Re: [PATCH 2/2] cgroup: reset css on destruction |
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On Tue, Mar 01, 2016 at 07:56:30PM +0300, Vladimir Davydov wrote: > From: Vladimir Davydov <vdavydov@virtuozzo.com> > Subject: [PATCH] cgroup: reset css on destruction > > An associated css can be around for quite a while after a cgroup > directory has been removed. In general, it makes sense to reset it to > defaults so as not to worry about any remnants. For instance, memory > cgroup needs to reset memory.low, otherwise pages charged to a dead > cgroup might never get reclaimed. There's ->css_reset callback, which > would fit perfectly for the purpose. Currently, it's only called when a > subsystem is disabled in the unified hierarchy and there are other > subsystems dependant on it. Let's call it on css destruction as well. > > Suggested-by: Johannes Weiner <hannes@cmpxchg.org> > Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Applied to cgroup/for-4.6. Thanks.
-- tejun
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