From: Jens Axboe <axboe@kernel.dk>
To: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel <linux-fsdevel@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3] eventfd: convert to f_op->read_iter()
Date: Fri, 1 May 2020 11:54:35 -0600 [thread overview]
Message-ID: <222126cc-0eb5-31b1-2a31-ef1ff2b24f72@kernel.dk> (raw)
In-Reply-To: <4037e867-af74-6a11-a501-7e5b804beec5@kernel.dk>
On 5/1/20 11:53 AM, Jens Axboe wrote:
> eventfd is using ->read() as it's file_operations read handler, but
> this prevents passing in information about whether a given IO operation
> is blocking or not. We can only use the file flags for that. To support
> async (-EAGAIN/poll based) retries for io_uring, we need ->read_iter()
> support. Convert eventfd to using ->read_iter().
Attached the wrong patch, forgot to update it... See 3b posting. I ran
this through my io_uring related eventfd testing, and it looks good.
--
Jens Axboe
prev parent reply other threads:[~2020-05-01 17:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-01 17:53 Jens Axboe
2020-05-01 17:54 ` Jens Axboe [this message]
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