Messages in this thread | | | Date | Thu, 24 Nov 2011 09:55:33 +0100 | From | Johannes Weiner <> | Subject | Re: [patch 7/8] mm: memcg: modify PageCgroupAcctLRU non-atomically |
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On Thu, Nov 24, 2011 at 09:09:15AM +0900, KAMEZAWA Hiroyuki wrote: > On Wed, 23 Nov 2011 16:42:30 +0100 > Johannes Weiner <hannes@cmpxchg.org> wrote: > > > From: Johannes Weiner <jweiner@redhat.com> > > > > This bit is protected by zone->lru_lock, there is no need for locked > > operations when setting and clearing it. > > > > Signed-off-by: Johannes Weiner <jweiner@redhat.com> > > This atomic ops are for avoiding race with other ops as lock_page_cgroup(). > Or other Set/ClearPageCgroup.... > > Do I misunderstand atomic ops v.s. non-atomic ops race ?
Nope, you are spot-on. I'm the cretin. ;-) See my reply to Hugh's email.
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