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SubjectRe: [PATCH] memcg: update documentation v5
On Tue, Apr 13, 2010 at 01:45:53PM +0900, KAMEZAWA Hiroyuki wrote:

[..]
> -2. Locking
> +2.6 Locking
>
> -The memory controller uses the following hierarchy
> + lock_page_cgroup()/unlock_page_cgroup() should not be called under
> + mapping->tree_lock.
>

Because I never understood very well, I will ask. Why lock_page_cgroup()
should not be called under mapping->tree_lock?

Thanks
Vivek


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