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Tue, 14 Oct 2025 06:12:36 -0700 (PDT) Received: from [127.0.0.1] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id ca18e2360f4ac-93e25a39134sm484423939f.12.2025.10.14.06.12.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Oct 2025 06:12:36 -0700 (PDT) From: Jens Axboe To: Bart Van Assche Cc: linux-block@vger.kernel.org, Christoph Hellwig In-Reply-To: <20251013192803.4168772-1-bvanassche@acm.org> References: <20251013192803.4168772-1-bvanassche@acm.org> Subject: Re: [PATCH 0/2] block/mq-deadline: Fix BLK_MQ_INSERT_AT_HEAD support Message-Id: <176044755550.107826.7770170204307889174.b4-ty@kernel.dk> Date: Tue, 14 Oct 2025 07:12:35 -0600 Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.14.3 On Mon, 13 Oct 2025 12:28:01 -0700, Bart Van Assche wrote: > Commit c807ab520fc3 ("block/mq-deadline: Add I/O priority support") > modified the behavior of request flag BLK_MQ_INSERT_AT_HEAD from > dispatching a request before other requests into dispatching a request > before other requests with the same I/O priority. This is not correct since > BLK_MQ_INSERT_AT_HEAD is used when requeuing requests and also when a flush > request is inserted. Both types of requests should be dispatched as soon > as possible. Hence this patch series that makes the mq-deadline I/O scheduler > again ignore the I/O priority for BLK_MQ_INSERT_AT_HEAD requests. > > [...] Applied, thanks! [1/2] block/mq-deadline: Introduce dd_start_request() commit: 667312e1c0c091bd6d62cabd3d6e03e0a757d87c [2/2] block/mq-deadline: Switch back to a single dispatch list commit: 2f52aa87a0b7da80f50aff13904b82d24171d1a7 Best regards, -- Jens Axboe