Re: [PATCH -mm -v4 02/21] mm, THP, swap: Make CONFIG_THP_SWAP depends on CONFIG_SWAP

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To: "Huang, Ying" <ying.huang@xxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: [PATCH -mm -v4 02/21] mm, THP, swap: Make CONFIG_THP_SWAP depends on CONFIG_SWAP
From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Date: Mon, 9 Jul 2018 09:00:53 -0700
Cc: linux-mm@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>, Andrea Arcangeli <aarcange@xxxxxxxxxx>, Michal Hocko <mhocko@xxxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, Shaohua Li <shli@xxxxxxxxxx>, Hugh Dickins <hughd@xxxxxxxxxx>, Minchan Kim <minchan@xxxxxxxxxx>, Rik van Riel <riel@xxxxxxxxxx>, Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>, Zi Yan <zi.yan@xxxxxxxxxxxxxx>, Daniel Jordan <daniel.m.jordan@xxxxxxxxxx>
In-reply-to: <20180622035151.6676-3-ying.huang@intel.com>
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References: <20180622035151.6676-1-ying.huang@intel.com> <20180622035151.6676-3-ying.huang@intel.com>
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>  config THP_SWAP
>  	def_bool y
> -	depends on TRANSPARENT_HUGEPAGE && ARCH_WANTS_THP_SWAP
> +	depends on TRANSPARENT_HUGEPAGE && ARCH_WANTS_THP_SWAP && SWAP
>  	help


This seems like a bug-fix.  Is there a reason this didn't cause problems
up to now?

Follow-Ups:
- Re: [PATCH -mm -v4 02/21] mm, THP, swap: Make CONFIG_THP_SWAP depends on CONFIG_SWAP
  - From: Huang, Ying

References:
- [PATCH -mm -v4 00/21] mm, THP, swap: Swapout/swapin THP in one piece
  - From: Huang, Ying
- [PATCH -mm -v4 02/21] mm, THP, swap: Make CONFIG_THP_SWAP depends on CONFIG_SWAP
  - From: Huang, Ying

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