linux-kernel - Re: [PATCH -next v5 1/6] md: pass a md_thread pointer to md_register

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Message-ID: <CAPhsuW7rUQ9KFxCQw-iAAA64=x==b-Qu0nnp32TXn-85Okb00w@mail.gmail.com>
Date:   Mon, 10 Apr 2023 18:15:57 -0700
From:   Song Liu <song@...nel.org>
To:     Yu Kuai <yukuai1@...weicloud.com>
Cc:     logang@...tatee.com, linux-kernel@...r.kernel.org,
        linux-raid@...r.kernel.org, yukuai3@...wei.com,
        yi.zhang@...wei.com, yangerkun@...wei.com
Subject: Re: [PATCH -next v5 1/6] md: pass a md_thread pointer to md_register_thread()

On Mon, Apr 10, 2023 at 4:37 AM Yu Kuai <yukuai1@...weicloud.com> wrote:
>
> From: Yu Kuai <yukuai3@...wei.com>
>
> Prepare to protect md_thread with rcu, there are no functional changes.

Why do we need this change? To add __rcu later?

Can we do something like:

struct md_thread __rcu *md_register_thread(void (*run) (struct md_thread *),
               struct mddev *mddev, const char *name)

Thanks,
Song