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Mon, 10 May 2021 22:26:32 -0700 (PDT) Received: from wuchi.mioffice.cn ([209.9.72.213]) by smtp.gmail.com with ESMTPSA id e23sm12506423pfd.104.2021.05.10.22.26.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 May 2021 22:26:32 -0700 (PDT) From: Chi Wu To: akpm@linux-foundation.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, tj@kernel.org, mszeredi@redhat.com, sedat.dilek@gmail.com, axboe@fb.com, jack@suse.cz, hcochran@kernelspring.com, Chi Wu Subject: [PATCH] mm/page-writeback: Update the comment of Dirty position control Date: Tue, 11 May 2021 13:26:26 +0800 Message-Id: <20210511052626.19005-1-wuchi.zero@gmail.com> X-Mailer: git-send-email 2.17.1 Authentication-Results: imf30.hostedemail.com; dkim=pass header.d=gmail.com header.s=20161025 header.b=MZqW3y4C; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf30.hostedemail.com: domain of wuchizero@gmail.com designates 209.85.214.182 as permitted sender) smtp.mailfrom=wuchizero@gmail.com X-Stat-Signature: wkskxi7gjz8wkq49j8adqnq9gnfxdcdc X-Rspamd-Queue-Id: 35796E00012F X-Rspamd-Server: rspam02 Received-SPF: none (gmail.com>: No applicable sender policy available) receiver=imf30; identity=mailfrom; envelope-from=""; helo=mail-pl1-f182.google.com; client-ip=209.85.214.182 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1620710765-362920 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: As the value of pos_ratio_polynom() clamp between 0 and 2LL << RATELIMIT_CALC_SHIFT, the global control line should be consistent with it. Signed-off-by: Chi Wu --- mm/page-writeback.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 0062d5c57d41..e9a4f6cf12bb 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -845,7 +845,7 @@ static long long pos_ratio_polynom(unsigned long setpoint, * ^ pos_ratio * | * | |<===== global dirty control scope ======>| - * 2.0 .............* + * 2.0 * * * * * * * * | .* * | . * * | . *