From: Goldwyn Rodrigues <rgoldwyn-l3A5Bk7waGM@public.gmane.org>
To: Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Cc: linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
jack-IBi9RG/b67k@public.gmane.org,
linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-btrfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-ext4-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-xfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
sagi-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org,
avi-VrcmuVmyx1hWk0Htik3J/w@public.gmane.org,
axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
willy-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
tom.leiming-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Subject: Re: [PATCH 2/8] nowait aio: Introduce RWF_NOWAIT
Date: Wed, 19 Apr 2017 05:30:24 -0500 [thread overview]
Message-ID: <2d816e3e-3625-7ebd-8550-68a7cc9c1a2e@suse.de> (raw)
In-Reply-To: <20170419063930.GB20053-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
On 04/19/2017 01:39 AM, Christoph Hellwig wrote:
>
>> @@ -1593,6 +1593,11 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
>> }
>>
>> req->common.ki_flags |= iocb_rw_flags(iocb->aio_rw_flags);
>> + if ((req->common.ki_flags & IOCB_NOWAIT) &&
>> + !(req->common.ki_flags & IOCB_DIRECT)) {
>> + ret = -EINVAL;
>> + goto out_put_req;
>> + }
>
> Wrong indentation. Also I think this should be EOPNOTSUPP here.
>
Do we plan to add support for nowait in buffered I/O in the future? It
is just too complicated. EINVAL suits best in this case.
--
Goldwyn
next prev parent reply other threads:[~2017-04-19 10:30 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-14 12:02 [PATCH 0/8 v6] No wait AIO Goldwyn Rodrigues
[not found] ` <20170414120257.8932-1-rgoldwyn-l3A5Bk7waGM@public.gmane.org>
2017-04-14 12:02 ` [PATCH 1/8] Use RWF_* flags for AIO operations Goldwyn Rodrigues
[not found] ` <20170414120257.8932-2-rgoldwyn-l3A5Bk7waGM@public.gmane.org>
2017-04-19 6:37 ` Christoph Hellwig
2017-04-14 12:02 ` [PATCH 2/8] nowait aio: Introduce RWF_NOWAIT Goldwyn Rodrigues
2017-04-19 6:39 ` Christoph Hellwig
[not found] ` <20170419063930.GB20053-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2017-04-19 10:30 ` Goldwyn Rodrigues [this message]
[not found] ` <2d816e3e-3625-7ebd-8550-68a7cc9c1a2e-l3A5Bk7waGM@public.gmane.org>
2017-04-19 11:03 ` Jan Kara
2017-04-14 12:02 ` [PATCH 3/8] nowait aio: return if direct write will trigger writeback Goldwyn Rodrigues
2017-04-14 12:02 ` [PATCH 4/8] nowait-aio: Introduce IOMAP_NOWAIT Goldwyn Rodrigues
2017-04-19 6:39 ` Christoph Hellwig
[not found] ` <20170414120257.8932-5-rgoldwyn-l3A5Bk7waGM@public.gmane.org>
2017-04-19 7:12 ` Jan Kara
2017-04-14 12:02 ` [PATCH 5/8] nowait aio: return on congested block device Goldwyn Rodrigues
2017-04-19 6:45 ` Christoph Hellwig
2017-04-19 15:21 ` Goldwyn Rodrigues
2017-04-20 13:43 ` Jan Kara
2017-04-24 21:10 ` Goldwyn Rodrigues
2017-04-25 2:28 ` Jens Axboe
2017-04-14 12:02 ` [PATCH 6/8] nowait aio: ext4 Goldwyn Rodrigues
2017-04-14 12:02 ` [PATCH 7/8] nowait aio: xfs Goldwyn Rodrigues
2017-04-19 6:45 ` Christoph Hellwig
2017-04-14 12:02 ` [PATCH 8/8] nowait aio: btrfs Goldwyn Rodrigues
[not found] ` <20170414120257.8932-9-rgoldwyn-l3A5Bk7waGM@public.gmane.org>
2017-04-18 11:39 ` David Sterba
2017-05-09 12:22 [PATCH 0/8 v7] No wait AIO Goldwyn Rodrigues
2017-05-09 12:22 ` [PATCH 2/8] nowait aio: Introduce RWF_NOWAIT Goldwyn Rodrigues
2017-05-11 7:42 ` Christoph Hellwig
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