linux-ext4 - Re: [PATCH v2 21/47] mm: workingset: dynamically allocate the mm-shadow shrinker

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Date:   Wed, 26 Jul 2023 15:13:37 +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, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org, x86@...nel.org,
        kvm@...r.kernel.org, xen-devel@...ts.xenproject.org,
        linux-erofs@...ts.ozlabs.org,
        linux-f2fs-devel@...ts.sourceforge.net, cluster-devel@...hat.com,
        linux-nfs@...r.kernel.org, linux-mtd@...ts.infradead.org,
        rcu@...r.kernel.org, netdev@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        dm-devel@...hat.com, linux-raid@...r.kernel.org,
        linux-bcache@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
        linux-xfs@...r.kernel.org, linux-btrfs@...r.kernel.org
Subject: Re: [PATCH v2 21/47] mm: workingset: dynamically allocate the
 mm-shadow shrinker



> On Jul 24, 2023, at 17:43, Qi Zheng <zhengqi.arch@...edance.com> wrote:
> 
> Use new APIs to dynamically allocate the mm-shadow shrinker.
> 
> Signed-off-by: Qi Zheng <zhengqi.arch@...edance.com>
> ---
> mm/workingset.c | 26 ++++++++++++++------------
> 1 file changed, 14 insertions(+), 12 deletions(-)
> 
> diff --git a/mm/workingset.c b/mm/workingset.c
> index 4686ae363000..4bc85f739b13 100644
> --- a/mm/workingset.c
> +++ b/mm/workingset.c
> @@ -762,12 +762,7 @@ static unsigned long scan_shadow_nodes(struct shrinker *shrinker,
> NULL);
> }
> 
> -static struct shrinker workingset_shadow_shrinker = {
> -	.count_objects = count_shadow_nodes,
> -	.scan_objects = scan_shadow_nodes,
> -	.seeks = 0, /* ->count reports only fully expendable nodes */
> -	.flags = SHRINKER_NUMA_AWARE | SHRINKER_MEMCG_AWARE,
> -};
> +static struct shrinker *workingset_shadow_shrinker;


Same as patch #17.