linux-kernel - Re: [PATCH v6 26/45] bcache: dynamically allocate the md-bcache shrinker

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Message-Id: <E27E42B5-60FB-4C7C-BB2A-7B525F5BC30A@linux.dev>
Date:   Mon, 18 Sep 2023 15:24:02 +0800
From:   Muchun Song <muchun.song@...ux.dev>
To:     Qi Zheng <zhengqi.arch@...edance.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>, david@...morbit.com,
        tkhai@...ru, Vlastimil Babka <vbabka@...e.cz>,
        Roman Gushchin <roman.gushchin@...ux.dev>, djwong@...nel.org,
        Christian Brauner <brauner@...nel.org>,
        "Paul E. McKenney" <paulmck@...nel.org>, tytso@....edu,
        steven.price@....com, cel@...nel.org,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        yujie.liu@...el.com, Greg KH <gregkh@...uxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux-MM <linux-mm@...ck.org>, linux-fsdevel@...r.kernel.org,
        Coly Li <colyli@...e.de>,
        Kent Overstreet <kent.overstreet@...il.com>,
        linux-bcache@...r.kernel.org
Subject: Re: [PATCH v6 26/45] bcache: dynamically allocate the md-bcache
 shrinker



> On Sep 11, 2023, at 17:44, Qi Zheng <zhengqi.arch@...edance.com> wrote:
> 
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the md-bcache 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 cache_set.
> 
> Signed-off-by: Qi Zheng <zhengqi.arch@...edance.com>

Acked-by: Muchun Song <songmuchun@...edance.com>

Thanks.