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Subject: Re: [PATCH -next] bcachefs: support iopoll method
To: Kent Overstreet <kent.overstreet@linux.dev>
CC: <linux-bcachefs@vger.kernel.org>, <linux-kernel@vger.kernel.org>
References: <20240815142034.1561661-1-lizetao1@huawei.com>
 <rqt2hvqaukziy5pzg3v7conihbjwa2icej23qbay3zm5b5kn5s@cvccny7kpz7p>
From: Li Zetao <lizetao1@huawei.com>
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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@huawei.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.