linux-kernel - Re: [PATCH -next] bcachefs: support iopoll method

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Message-ID: <340d85f3-ece3-45b8-b482-bfeac04e6ab4@huawei.com>
Date: Fri, 16 Aug 2024 11:35:35 +0800
From: Li Zetao <lizetao1@...wei.com>
To: Kent Overstreet <kent.overstreet@...ux.dev>
CC: <linux-bcachefs@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] bcachefs: support iopoll method

Hi,

在 2024/8/15 22:16, Kent Overstreet 写道:
> On Thu, Aug 15, 2024 at 10:20:34PM GMT, Li Zetao wrote:
>> When bcachefs uses io_uring, implement the iopoll method to support
>> IORING_SETUP_IOPOLL.
>>
>> Signed-off-by: Li Zetao <lizetao1@...wei.com>
> 
> tested?
I have tested with fio:

[root]# vi bcachefs.fio
[global]
direct=1
thread=1
norandommap=1
group_reporting=1
time_based=1
ioengine=io_uring

rw=randwrite
bs=4096
runtime=20
numjobs=1
fixedbufs=1
hipri=1
registerfiles=1
sqthread_poll=1

[filename0]
size=1G
iodepth=1
cpus_allowed=20
filename=/mnt/bcachefs/test

The option "hipri=1" need to support IORING_SETUP_IOPOLL for io_uring 
engine.