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From: Hao Xu <[email protected]>
To: Pavel Begunkov <[email protected]>, [email protected]
Cc: Jens Axboe <[email protected]>,
	[email protected],
	Alexander Viro <[email protected]>,
	Andrew Morton <[email protected]>,
	Luis Chamberlain <[email protected]>,
	Kuniyuki Iwashima <[email protected]>
Subject: Re: [RFC 0/5] support nonblock submission for splice pipe to pipe
Date: Wed, 8 Jun 2022 12:19:19 +0800	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

On 6/7/22 17:27, Pavel Begunkov wrote:
> On 6/7/22 09:06, Hao Xu wrote:
>> From: Hao Xu <[email protected]>
>>
>> splice from pipe to pipe is a trivial case, and we can support nonblock
>> try for it easily. splice depends on iowq at all which is slow. Let's
>> build a fast submission path for it by supporting nonblock.
> 
> fwiw,
> 
> https://www.spinics.net/lists/kernel/msg3652757.html
> 

Thanks, Pavel. Seems it has been discussed for a long time but the
result remains unclear...For me, I think this patch is necessary for 
getting a good SPLICE_F_NONBLOCK user experience.

  reply	other threads:[~2022-06-08  6:43 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-07  8:06 [RFC 0/5] support nonblock submission for splice pipe to pipe Hao Xu
2022-06-07  8:06 ` [PATCH 1/5] io_uring: move sp->len check up for splice and tee Hao Xu
2022-06-07  8:06 ` [PATCH 2/5] pipe: add trylock helpers for pipe lock Hao Xu
2022-06-07  8:06 ` [PATCH 3/5] splice: support nonblock for splice from pipe to pipe Hao Xu
2022-06-07  8:06 ` [PATCH 4/5] io_uring: support nonblock try for splicing " Hao Xu
2022-06-07 21:38   ` kernel test robot
2022-06-08 14:18   ` kernel test robot
2022-06-09  2:24   ` kernel test robot
2022-06-07  8:06 ` [PATCH 5/5] io_uring: add file_in in io_splice{} to avoid duplicate calculation Hao Xu
2022-06-07  8:13 ` [RFC 0/5] support nonblock submission for splice pipe to pipe Hao Xu
2022-06-07  9:27 ` Pavel Begunkov
2022-06-08  4:19   ` Hao Xu [this message]
2022-06-08  4:31     ` Jens Axboe
2022-06-08 11:33     ` Pavel Begunkov
2022-06-14 13:23 ` Hao Xu

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