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SubjectRe: [patch 7/8] mm: memcg: modify PageCgroupAcctLRU non-atomically
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 ?

Thanks,
-Kame



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