linux-kernel - Re: [PATCH v2 3/6] virtiofs: factor out more common methods for argbuf

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Message-ID: <4eed238d-f6c1-f170-797f-5b4b172b59e4@huaweicloud.com>
Date: Sat, 9 Mar 2024 12:27:44 +0800
From: Hou Tao <houtao@...weicloud.com>
To: Miklos Szeredi <miklos@...redi.hu>
Cc: linux-fsdevel@...r.kernel.org, Vivek Goyal <vgoyal@...hat.com>,
 Stefan Hajnoczi <stefanha@...hat.com>,
 Bernd Schubert <bernd.schubert@...tmail.fm>,
 "Michael S . Tsirkin" <mst@...hat.com>, Matthew Wilcox
 <willy@...radead.org>, Benjamin Coddington <bcodding@...hat.com>,
 linux-kernel@...r.kernel.org, virtualization@...ts.linux.dev,
 houtao1@...wei.com
Subject: Re: [PATCH v2 3/6] virtiofs: factor out more common methods for
 argbuf

Hi,

On 3/1/2024 10:24 PM, Miklos Szeredi wrote:
> On Wed, 28 Feb 2024 at 15:41, Hou Tao <houtao@...weicloud.com> wrote:
>> From: Hou Tao <houtao1@...wei.com>
>>
>> Factor out more common methods for bounce buffer of fuse args:
>>
>> 1) virtio_fs_argbuf_setup_sg: set-up sgs for bounce buffer
>> 2) virtio_fs_argbuf_copy_from_in_arg: copy each in-arg to bounce buffer
>> 3) virtio_fs_argbuf_out_args_offset: calc the start offset of out-arg
>> 4) virtio_fs_argbuf_copy_to_out_arg: copy bounce buffer to each out-arg
>>
>> These methods will be used to implement bounce buffer backed by
>> scattered pages which are allocated separatedly.
> Why is req->argbuf not changed to being typed?

Will update in next revision. Thanks for the suggestion.
>
> Thanks,
> Miklos