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Date: Thu, 26 Jul 2018 08:06:40 +0200
From: Michal Hocko <mhocko@kernel.org>
Subject: Re: Re: [PATCH] [PATCH] mm: disable preemption before swapcache_free
Message-ID: <20180726060640.GQ28386@dhcp22.suse.cz>
References: <2018072514375722198958@wingtech.com>
 <20180725141643.6d9ba86a9698bc2580836618@linux-foundation.org>
 <2018072610214038358990@wingtech.com>
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Sender: owner-linux-mm@kvack.org
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To: "zhaowuyun@wingtech.com" <zhaowuyun@wingtech.com>
Cc: akpm <akpm@linux-foundation.org>, mgorman <mgorman@techsingularity.net>, minchan <minchan@kernel.org>, vinmenon <vinmenon@codeaurora.org>, hannes <hannes@cmpxchg.org>, "hillf.zj" <hillf.zj@alibaba-inc.com>, linux-mm <linux-mm@kvack.org>, linux-kernel <linux-kernel@vger.kernel.org>, Hugh Dickins <hughd@google.com>

On Thu 26-07-18 10:21:40, zhaowuyun@wingtech.com wrote:
[...]
> Our project really needs a fix to this issue

Could you be more specific why? My understanding is that RT tasks
usually have all the memory mlocked otherwise all the real time
expectations are gone already.
-- 
Michal Hocko
SUSE Labs