linux-kernel - Re: [PATCH v2 0/2] Optimise io

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Message-ID: <20190924113300.GL2332@hirez.programming.kicks-ass.net>
Date:   Tue, 24 Sep 2019 13:33:00 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     Pavel Begunkov <asml.silence@...il.com>,
        Ingo Molnar <mingo@...nel.org>, Ingo Molnar <mingo@...hat.com>,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/2] Optimise io_uring completion waiting

On Tue, Sep 24, 2019 at 12:34:17PM +0200, Jens Axboe wrote:

> Just took a quick look at it, and ran into block/kyber-iosched.c that
> actually uses the private pointer for something that isn't a task
> struct...

Argh... that's some 'creative' abuse of the waitqueue API :/