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[146.241.97.230]) by smtp.gmail.com with ESMTPSA id z1sm18186559wrv.90.2019.07.15.03.57.32 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 15 Jul 2019 03:57:33 -0700 (PDT) From: Paolo Valente To: Jens Axboe Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, ulf.hansson@linaro.org, linus.walleij@linaro.org, bfq-iosched@googlegroups.com, oleksandr@natalenko.name, Paolo Valente Subject: [PATCH BUGFIX IMPROVEMENT V2 0/1] block, bfq: eliminate latency regression with fast drives Date: Mon, 15 Jul 2019 12:57:18 +0200 Message-Id: <20190715105719.20353-1-paolo.valente@linaro.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [V2 that should apply cleanly on current HEAD] Hi Jens, I've spotted a regression on a fast SSD: a loss of I/O-latency control with interactive tasks (such as the application start up I usually test). Details in the commit. I do hope that, after proper review, this commit makes it for 5.3. Thanks, Paolo Paolo Valente (1): block, bfq: check also in-flight I/O in dispatch plugging block/bfq-iosched.c | 67 +++++++++++++++++++++++++++++---------------- 1 file changed, 43 insertions(+), 24 deletions(-) -- 2.20.1