From: Pavel Begunkov <[email protected]>
To: Jens Axboe <[email protected]>, [email protected]
Subject: Re: [PATCH v2 0/2] Fix hang in io_uring_get_cqe() with iopoll
Date: Sun, 21 Jun 2020 22:54:18 +0300 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On 21/06/2020 21:48, Jens Axboe wrote:
> On 6/21/20 10:14 AM, Pavel Begunkov wrote:
>> v2: use relaxed load
>> fix errata
>>
>> Pavel Begunkov (2):
>> barriers: add load relaxed
>> Fix hang in io_uring_get_cqe() with iopoll
>>
>> src/include/liburing/barrier.h | 4 ++++
>> src/queue.c | 16 +++++++++++++++-
>> 2 files changed, 19 insertions(+), 1 deletion(-)
>
> After checking again, I think your liburing is quite a bit out-of-date.
It is. Apparently I checked out something old, my apologies.
> Can you check if the issue still exists in the current git tree?
This one is plumbed, though from a glance there is a similar problem
with non-iopoll mode and early wake by a timeout, rendering it to
idle-loop instead of sleeping. I'll leave it for a bit later.
--
Pavel Begunkov
prev parent reply other threads:[~2020-06-21 19:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-21 16:14 [PATCH v2 0/2] Fix hang in io_uring_get_cqe() with iopoll Pavel Begunkov
2020-06-21 16:14 ` [PATCH v2 1/2] barriers: add load relaxed Pavel Begunkov
2020-06-21 16:14 ` [PATCH v2 2/2] Fix hang in io_uring_get_cqe() with iopoll Pavel Begunkov
2020-06-21 18:48 ` [PATCH v2 0/2] " Jens Axboe
2020-06-21 19:54 ` Pavel Begunkov [this message]
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