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SubjectRe: [PATCH 1/4] memcg: account swap cache under lock
KAMEZAWA Hiroyuki wrote:
> While page-cache's charge/uncharge is done under page_lock(), swap-cache
> isn't. (anonymous page is charged when it's newly allocated.)
>
> This patch moves do_swap_page()'s charge() call under lock.
> I don't see any bad problem *now* but this fix will be good for future
> for avoiding unneccesary racy state.
>
>
> Changelog: (v5) -> (v6)
> - mark_page_accessed() is moved before lock_page().
> - fixed missing unlock_page()
> (no changes in previous version)

Looks good to me

Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>

--
Balbir


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