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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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       reply	other threads:[~2016-08-10  8:02 UTC|newest]

Thread overview: 6+ 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     ` [RFC 11/11] mm, THP, swap: Delay splitting THP during swap out 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
2016-08-09 16:37   ` Huang, Ying

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