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

[KAMEZAWA Hiroyuki]

On Wed, 23 Nov 2011 16:42:30 +0100
Johannes Weiner <hannes@xxxxxxxxxxx> wrote:

> From: Johannes Weiner <jweiner@xxxxxxxxxx>
> 
> 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@xxxxxxxxxx>

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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/