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Date: Mon, 12 Feb 2018 11:28:00 +0900
From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Subject: Re: [PATCH -mm -v3] mm, swap, frontswap: Fix THP swap if frontswap
 enabled
Message-ID: <20180212022800.GA458@jagdpanzerIV>
References: <20180209084947.22749-1-ying.huang@intel.com>
 <20180209130339.e91c8709e9c46e5b3f941a29@linux-foundation.org>
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To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Huang, Ying" <ying.huang@intel.com>, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Huang Ying <huang.ying.caritas@gmail.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, Dan Streetman <ddstreet@ieee.org>, Seth Jennings <sjenning@redhat.com>, Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>, Shaohua Li <shli@kernel.org>, Michal Hocko <mhocko@suse.com>, Johannes Weiner <hannes@cmpxchg.org>, Mel Gorman <mgorman@techsingularity.net>, Shakeel Butt <shakeelb@google.com>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, Juergen Gross <jgross@suse.com>, stable@vger.kernel.org, Sergey Senozhatsky <sergey.senozhatsky@gmail.com>, Minchan Kim <minchan@kernel.org>

Hello,

On (02/09/18 13:03), Andrew Morton wrote:
[..]
> > Frontswap has multiple backends, to make it easy for one backend to
> > enable THP support, the THP checking is put in backend frontswap store
> > functions instead of the general interfaces.
> > 
> > Fixes: bd4c82c22c367e068 ("mm, THP, swap: delay splitting THP after swapped out")
> > Reported-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
> > Tested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
> 
> I don't think Sergey has tested this version and I suspect this is a
> holdover from the earlier patch, so I'll remove this line.

Just tested it (v3) with FRONTSWAP enabled (didn't test XEN tmem).
Works fine.

FWIW
Tested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> # frontswap

	-ss

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