linux-kernel - Re: [PATCH v5 25/45] md/raid5: dynamically allocate the md-raid5 shrinker

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Message-ID: <CAPhsuW4Tp3XPF349q8-BcEpaNSn23Rp10Wba=uoKy6Xtix29Gw@mail.gmail.com>
Date:   Wed, 23 Aug 2023 20:55:42 -0700
From:   Song Liu <song@...nel.org>
To:     Qi Zheng <zhengqi.arch@...edance.com>
Cc:     akpm@...ux-foundation.org, david@...morbit.com, tkhai@...ru,
        vbabka@...e.cz, roman.gushchin@...ux.dev, djwong@...nel.org,
        brauner@...nel.org, paulmck@...nel.org, tytso@....edu,
        steven.price@....com, cel@...nel.org, senozhatsky@...omium.org,
        yujie.liu@...el.com, gregkh@...uxfoundation.org,
        muchun.song@...ux.dev, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        Muchun Song <songmuchun@...edance.com>,
        linux-raid@...r.kernel.org
Subject: Re: [PATCH v5 25/45] md/raid5: dynamically allocate the md-raid5 shrinker

On Wed, Aug 23, 2023 at 8:47 PM Qi Zheng <zhengqi.arch@...edance.com> wrote:
>
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the md-raid5 shrinker, so that it can be freed
> asynchronously via RCU. Then it doesn't need to wait for RCU read-side
> critical section when releasing the struct r5conf.
>
> Signed-off-by: Qi Zheng <zhengqi.arch@...edance.com>
> Reviewed-by: Muchun Song <songmuchun@...edance.com>
> CC: Song Liu <song@...nel.org>
> CC: linux-raid@...r.kernel.org

LGTM!

Reviewed-by: Song Liu <song@...nel.org>