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Date: Fri, 6 Apr 2018 12:10:19 -0400
From: Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [PATCH v2 2/4] mm/vmscan: remove redundant
 current_may_throttle() check
Message-ID: <20180406161019.GC20806@cmpxchg.org>
References: <20180323152029.11084-1-aryabinin@virtuozzo.com>
 <20180323152029.11084-3-aryabinin@virtuozzo.com>
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In-Reply-To: <20180323152029.11084-3-aryabinin@virtuozzo.com>
Sender: owner-linux-mm@kvack.org
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To: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, Mel Gorman <mgorman@techsingularity.net>, Tejun Heo <tj@kernel.org>, Michal Hocko <mhocko@kernel.org>, Shakeel Butt <shakeelb@google.com>, Steven Rostedt <rostedt@goodmis.org>, linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org

On Fri, Mar 23, 2018 at 06:20:27PM +0300, Andrey Ryabinin wrote:
> Only kswapd can have non-zero nr_immediate, and current_may_throttle() is
> always true for kswapd (PF_LESS_THROTTLE bit is never set) thus it's
> enough to check stat.nr_immediate only.
> 
> Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
> Acked-by: Michal Hocko <mhocko@suse.com>

Acked-by: Johannes Weiner <hannes@cmpxchg.org>