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[70.44.39.90]) by smtp.gmail.com with ESMTPSA id z19sm16357992qtz.81.2020.06.16.07.51.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jun 2020 07:51:12 -0700 (PDT) Date: Tue, 16 Jun 2020 10:50:35 -0400 From: Johannes Weiner To: js1304@gmail.com Cc: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Rik van Riel , Minchan Kim , Michal Hocko , kernel-team@lge.com, Joonsoo Kim Subject: Re: [PATCH for v5.8 3/3] mm/memory: fix IO cost for anonymous page Message-ID: <20200616145035.GC616830@cmpxchg.org> References: <1592288204-27734-1-git-send-email-iamjoonsoo.kim@lge.com> <1592288204-27734-4-git-send-email-iamjoonsoo.kim@lge.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1592288204-27734-4-git-send-email-iamjoonsoo.kim@lge.com> X-Rspamd-Queue-Id: 7F2FF181303A0 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Jun 16, 2020 at 03:16:44PM +0900, js1304@gmail.com wrote: > From: Joonsoo Kim > > With synchronous IO swap device, swap-in is directly handled in fault > code. Since IO cost notation isn't added there, with synchronous IO swap > device, LRU balancing could be wrongly biased. Fix it to count it > in fault code. > > Signed-off-by: Joonsoo Kim Acked-by: Johannes Weiner