From: Jann Horn <[email protected]>
To: Jens Axboe <[email protected]>
Cc: io-uring <[email protected]>,
Al Viro <[email protected]>,
Oleg Nesterov <[email protected]>,
Peter Zijlstra <[email protected]>
Subject: Re: [PATCH 1/4] task_work: add task_work_pending() helper
Date: Tue, 7 Apr 2020 19:52:19 +0200 [thread overview]
Message-ID: <CAG48ez3H+xXMbEVvG5gy0r4BjEY2RfkOxn1yN9Dmhb8n97m-qA@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
On Tue, Apr 7, 2020 at 6:03 PM Jens Axboe <[email protected]> wrote:
> Various callsites currently check current->task_works != NULL to know
> when to run work. Add a helper that we use internally for that. This is
> in preparation for also not running if exit queue has been queued.
[...]
> +static inline bool task_work_pending(void)
> +{
> + return current->task_works;
> +}
I think this should be using READ_ONCE().
next prev parent reply other threads:[~2020-04-07 17:52 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-07 16:02 [PATCHSET v2] io_uring and task_work interactions Jens Axboe
2020-04-07 16:02 ` [PATCH 1/4] task_work: add task_work_pending() helper Jens Axboe
2020-04-07 17:52 ` Jann Horn [this message]
2020-04-07 16:02 ` [PATCH 2/4] task_work: kill current->task_works checking in callers Jens Axboe
2020-04-07 16:02 ` [PATCH 3/4] task_work: make exit_work externally visible Jens Axboe
2020-04-07 16:02 ` [PATCH 4/4] io_uring: flush task work before waiting for ring exit Jens Axboe
2020-04-07 16:24 ` Oleg Nesterov
2020-04-07 16:38 ` Oleg Nesterov
2020-04-07 20:30 ` Jens Axboe
2020-04-07 20:39 ` Jens Axboe
2020-04-08 18:40 ` Oleg Nesterov
2020-04-08 18:48 ` Jens Axboe
2020-04-08 19:06 ` Jens Axboe
2020-04-08 20:17 ` Oleg Nesterov
2020-04-08 20:25 ` Jens Axboe
2020-04-08 21:19 ` Jens Axboe
2020-04-09 18:50 ` Oleg Nesterov
2020-04-10 0:29 ` Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2020-04-06 19:48 [PATCHSET 0/4] io_uring and task_work interactions Jens Axboe
2020-04-06 19:48 ` [PATCH 1/4] task_work: add task_work_pending() helper Jens Axboe
2020-04-07 11:28 ` Oleg Nesterov
2020-04-07 15:43 ` Jens Axboe
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