linux-kernel - Re: (subset) [RFC PATCH v5 0/5] introduce io_uring_cmd_import_fixed

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Message-ID: <4ba22ceb-d910-4d2c-addb-dc8bcb6dfd91@kernel.dk>
Date: Wed, 19 Mar 2025 11:10:07 -0600
From: Jens Axboe <axboe@...nel.dk>
To: dsterba@...e.cz
Cc: Josef Bacik <josef@...icpanda.com>, David Sterba <dsterba@...e.com>,
 Pavel Begunkov <asml.silence@...il.com>, Sidong Yang
 <sidong.yang@...iosa.ai>, linux-btrfs@...r.kernel.org,
 linux-kernel@...r.kernel.org, io-uring@...r.kernel.org
Subject: Re: (subset) [RFC PATCH v5 0/5] introduce
 io_uring_cmd_import_fixed_vec

On 3/19/25 11:07 AM, David Sterba wrote:
> On Wed, Mar 19, 2025 at 09:27:37AM -0600, Jens Axboe wrote:
>> On 3/19/25 9:26 AM, Jens Axboe wrote:
>>>
>>> On Wed, 19 Mar 2025 06:12:46 +0000, Sidong Yang wrote:
>>>> This patche series introduce io_uring_cmd_import_vec. With this function,
>>>> Multiple fixed buffer could be used in uring cmd. It's vectored version
>>>> for io_uring_cmd_import_fixed(). Also this patch series includes a usage
>>>> for new api for encoded read/write in btrfs by using uring cmd.
>>>>
>>>> There was approximately 10 percent of performance improvements through benchmark.
>>>> The benchmark code is in
>>>> https://github.com/SidongYang/btrfs-encoded-io-test/blob/main/main.c
>>>>
>>>> [...]
>>>
>>> Applied, thanks!
>>>
>>> [1/5] io_uring: rename the data cmd cache
>>>       commit: 575e7b0629d4bd485517c40ff20676180476f5f9
>>> [2/5] io_uring/cmd: don't expose entire cmd async data
>>>       commit: 5f14404bfa245a156915ee44c827edc56655b067
>>> [3/5] io_uring/cmd: add iovec cache for commands
>>>       commit: fe549edab6c3b7995b58450e31232566b383a249
>>> [4/5] io_uring/cmd: introduce io_uring_cmd_import_fixed_vec
>>>       commit: b24cb04c1e072ecd859a98b2e4258ca8fe8d2d4d
>>
>> 1-4 look pretty straight forward to me - I'll be happy to queue the
>> btrfs one as well if the btrfs people are happy with it, just didn't
>> want to assume anything here.
> 
> For 6.15 is too late so it makes more sense to take it through the btrfs
> patches targetting 6.16.

No problem - Sidong, guessing you probably want to resend patch 5/5 once
btrfs has a next branch based on 6.15-rc1 or later.

-- 
Jens Axboe