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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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