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From: Tycho Kirchner <tychokirchner@mail.de>
To: linux-man <linux-man@vger.kernel.org>
Subject: ioprio_get(2) outdated
Date: Thu, 20 May 2021 12:30:45 +0200	[thread overview]
Message-ID: <f959ce98-f47b-bbb0-8159-b84a84bdf3eb@mail.de> (raw)

Hi,
please update ioprio_get(2) to the today more common Multi-Queue Block 
IO Queueing Mechanism (blk-mq). In particular:

> These system calls have an effect only when used in conjunction
> with an I/O scheduler that supports I/O priorities.  As at kernel
> 2.6.17 the only such scheduler is the Completely Fair Queuing
> (CFQ) I/O scheduler.

As far as I know BFQ is the only mq-iosched which supports (read-) 
priorities. See also [1]. The kernel Documentation/block/ioprio.txt is 
outdated as well, I guess I'll send an email there too.

Thanks and kind regards
Tycho Kirchner



[1]: https://www.kernel.org/doc/html/latest/block/bfq-iosched.html

             reply	other threads:[~2021-05-20 12:07 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-20 10:30 Tycho Kirchner [this message]
2021-05-21 11:07 ` ioprio_get(2) outdated Alejandro Colomar (man-pages)

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