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Date: Wed, 17 Jan 2024 12:20:11 +0000 From: Christian Loehle <christian.loehle@....com> To: linux-kernel@...r.kernel.org, axboe@...nel.dk, bvanassche@....org, linux-block@...r.kernel.org, corbet@....net Subject: [PATCH] Documentation: block: ioprio: Update schedulers This doc hasn't been touched in a while, in the meantime some new io schedulers were added (e.g. all of mq), some with ioprio support. Signed-off-by: Christian Loehle <christian.loehle@....com> --- Documentation/block/ioprio.rst | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/Documentation/block/ioprio.rst b/Documentation/block/ioprio.rst index a25c6d5df87b..5410308888d2 100644 --- a/Documentation/block/ioprio.rst +++ b/Documentation/block/ioprio.rst @@ -9,14 +9,14 @@ Intro With the introduction of cfq v3 (aka cfq-ts or time sliced cfq), basic io priorities are supported for reads on files. This enables users to io nice processes or process groups, similar to what has been possible with cpu -scheduling for ages. This document mainly details the current possibilities -with cfq; other io schedulers do not support io priorities thus far. +scheduling for ages. Support for io priorities is io scheduler dependent and +currently supported by bfq, mq-deadline and cfq. Scheduling classes ------------------ -CFQ implements three generic scheduling classes that determine how io is -served for a process. +Three generic scheduling classes are implemented for io priorities that +determine how io is served for a process. IOPRIO_CLASS_RT: This is the realtime io class. This scheduling class is given higher priority than any other in the system, processes from this class are -- 2.34.1
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