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Tue, 11 May 2021 03:36:11 -0700 (PDT) Received: from wuchi.mioffice.cn ([209.9.72.213]) by smtp.gmail.com with ESMTPSA id f24sm13947394pfk.45.2021.05.11.03.36.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 May 2021 03:36:11 -0700 (PDT) From: Chi Wu To: jack@suse.cz Cc: akpm@linux-foundation.org, axboe@fb.com, hcochran@kernelspring.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mszeredi@redhat.com, sedat.dilek@gmail.com, tj@kernel.org, Chi Wu Subject: [PATCH v2] mm/page-writeback: Update the comment of Dirty position control Date: Tue, 11 May 2021 18:36:06 +0800 Message-Id: <20210511103606.3732-1-wuchi.zero@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210511090632.GH24154@quack2.suse.cz> References: <20210511090632.GH24154@quack2.suse.cz> X-Rspamd-Queue-Id: 7ACEFC000C6E Authentication-Results: imf03.hostedemail.com; dkim=pass header.d=gmail.com header.s=20161025 header.b=oVsOUcDm; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf03.hostedemail.com: domain of wuchizero@gmail.com designates 209.85.215.177 as permitted sender) smtp.mailfrom=wuchizero@gmail.com X-Rspamd-Server: rspam03 X-Stat-Signature: 7uwek4ayo11y7wz7wfnu5nmtg17wix6p Received-SPF: none (gmail.com>: No applicable sender policy available) receiver=imf03; identity=mailfrom; envelope-from=""; helo=mail-pg1-f177.google.com; client-ip=209.85.215.177 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1620729364-202527 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..3882405dc051 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 * * * * * * * * | .* * | . * * | . * -- 2.17.1