From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Axboe Subject: Re: [PATCH 07/18] io_uring: support for IO polling Date: Tue, 29 Jan 2019 12:10:08 -0700 Message-ID: References: <20190128213538.13486-1-axboe@kernel.dk> <20190128213538.13486-8-axboe@kernel.dk> <20190129172414.GA15347@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Content-Language: en-US Sender: owner-linux-aio@kvack.org To: Christoph Hellwig Cc: linux-aio@kvack.org, linux-block@vger.kernel.org, linux-man@vger.kernel.org, linux-api@vger.kernel.org, jmoyer@redhat.com, avi@scylladb.com List-Id: linux-man@vger.kernel.org On 1/29/19 11:31 AM, Jens Axboe wrote: >> The code looks a little clumsy to me. Why not: >> >> while (!list_empty(&ctx->poll_list)) { >> int ret = io_do_iopoll(ctx, nr_events, min); >> if (ret) >> return ret; >> >> if (!min || *nr_events >= min) >> return 0; >> } >> >> return 1; > > I think you messed up the 0/1 here, how about this: > > while (!list_empty(&ctx->poll_list)) { > int ret; > > ret = io_do_iopoll(ctx, nr_events, min); > if (ret < 0) > return ret; > if (!min || *nr_events >= min) > return 1; > } > > return 0; Or I did... I think yours is correct. -- Jens Axboe -- To unsubscribe, send a message with 'unsubscribe linux-aio' in the body to majordomo@kvack.org. For more info on Linux AIO, see: http://www.kvack.org/aio/ Don't email: aart@kvack.org