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From: Phil Elwell <[email protected]>
To: Jens Axboe <[email protected]>
Cc: Greg KH <[email protected]>,
	[email protected], [email protected], [email protected],
	[email protected], [email protected],
	LKML <[email protected]>,
	[email protected], stable <[email protected]>
Subject: Re: [PATCH] io_uring: Use io_schedule* in cqring wait
Date: Mon, 24 Jul 2023 17:48:36 +0100	[thread overview]
Message-ID: <CAMEGJJ0oNGBg=9jRogsstcYCBUVnDGpuijwXVZZQEJr=2awaqA@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>

Hi Jens,

On Mon, 24 Jul 2023 at 17:08, Jens Axboe <[email protected]> wrote:
>
> On 7/24/23 10:07?AM, Phil Elwell wrote:
> >> Even though I don't think this is an actual problem, it is a bit
> >> confusing that you get 100% iowait while waiting without having IO
> >> pending. So I do think the suggested patch is probably worthwhile
> >> pursuing. I'll post it and hopefully have Andres test it too, if he's
> >> available.
> >
> > If you CC me I'll happily test it for you.
>
> Here it is.

< snip >

Thanks, that works for me on top of 6.5-rc3. Going to 6.1 is a
non-trivial (for me) back-port - the switch from "ret = 0" in 6.5 to
"ret = 1" in 6.1 is surprising.

Phil

  reply	other threads:[~2023-07-24 16:49 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-24 15:35 [PATCH] io_uring: Use io_schedule* in cqring wait Phil Elwell
2023-07-24 15:48 ` Greg KH
2023-07-24 15:50   ` Jens Axboe
2023-07-24 15:58     ` Jens Axboe
2023-07-24 16:07       ` Phil Elwell
2023-07-24 16:08         ` Jens Axboe
2023-07-24 16:48           ` Phil Elwell [this message]
2023-07-24 18:22             ` Jens Axboe
2023-07-24 19:22       ` Pavel Begunkov
2023-07-24 20:27         ` Jeff Moyer
2023-07-24 15:48 ` Jens Axboe
2023-07-24 16:16   ` Andres Freund
2023-07-24 16:20     ` Jens Axboe
2023-07-24 17:24     ` Andres Freund
2023-07-24 17:44       ` Jens Axboe
  -- strict thread matches above, loose matches on Subject: below --
2023-07-18 19:49 [PATCHSET v2 0/5] Improve async iomap DIO performance Jens Axboe
2023-07-18 19:49 ` [PATCH] io_uring: Use io_schedule* in cqring wait Jens Axboe
2023-07-18 19:50   ` Jens Axboe

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