From: "Hillf Danton" <hillf.zj@alibaba-inc.com>
To: 'Huang Ying' <ying.huang@intel.com>
Cc: linux-mm@kvack.org
Subject: Re: [RFC 11/11] mm, THP, swap: Delay splitting THP during swap out
Date: Wed, 10 Aug 2016 16:01:59 +0800 [thread overview]
Message-ID: <01f301d1f2dd$78df7660$6a9e6320$@alibaba-inc.com> (raw)
In-Reply-To: <01f201d1f2dc$bd43f750$37cbe5f0$@alibaba-inc.com>
>
> @@ -187,6 +221,14 @@ int add_to_swap(struct page *page, struct list_head *list)
> VM_BUG_ON_PAGE(!PageLocked(page), page);
> VM_BUG_ON_PAGE(!PageUptodate(page), page);
>
> + if (unlikely(PageTransHuge(page))) {
> + err = add_to_swap_trans_huge(page, list);
> + if (err < 0)
> + return 0;
> + else if (err > 0)
> + return err;
> + /* fallback to split firstly if return 0 */
switch (err) and add vm event count according to the meaning of err?
> + }
thanks
Hillf
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next parent reply other threads:[~2016-08-10 8:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <01f101d1f2da$5e943aa0$1bbcafe0$@alibaba-inc.com>
[not found] ` <01f201d1f2dc$bd43f750$37cbe5f0$@alibaba-inc.com>
2016-08-10 8:01 ` Hillf Danton [this message]
2016-08-10 14:45 ` Huang, Ying
2016-08-10 16:28 ` Dave Hansen
2016-08-10 16:49 ` Huang, Ying
2016-08-09 16:37 [RFC 00/11] THP swap: Delay splitting THP during swapping out Huang, Ying
2016-08-09 16:37 ` [RFC 11/11] mm, THP, swap: Delay splitting THP during swap out Huang, Ying
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