2022-10-24 08:21:54

by Baoquan He

Subject: [PATCH 1/8] mm/percpu: remove unused pcpu_map_extend_chunks

Since commit 40064aeca35c ("percpu: replace area map allocator with
bitmap"), it is unneeded.

Signed-off-by: Baoquan He <[email protected]>
---
mm/percpu.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index 27697b2429c2..26d8cd2ca323 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -174,9 +174,6 @@ static DEFINE_MUTEX(pcpu_alloc_mutex); /* chunk create/destroy, [de]pop, map ext

struct list_head *pcpu_chunk_lists __ro_after_init; /* chunk list slots */

-/* chunks which need their map areas extended, protected by pcpu_lock */
-static LIST_HEAD(pcpu_map_extend_chunks);
-
/*
* The number of empty populated pages, protected by pcpu_lock.
* The reserved chunk doesn't contribute to the count.
--
2.34.1

2022-10-24 19:01:07

by Dennis Zhou

Subject: Re: [PATCH 1/8] mm/percpu: remove unused pcpu_map_extend_chunks

On Mon, Oct 24, 2022 at 04:14:28PM +0800, Baoquan He wrote:
> Since commit 40064aeca35c ("percpu: replace area map allocator with
> bitmap"), it is unneeded.
>
> Signed-off-by: Baoquan He <[email protected]>
> ---
> mm/percpu.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/mm/percpu.c b/mm/percpu.c
> index 27697b2429c2..26d8cd2ca323 100644
> --- a/mm/percpu.c
> +++ b/mm/percpu.c
> @@ -174,9 +174,6 @@ static DEFINE_MUTEX(pcpu_alloc_mutex); /* chunk create/destroy, [de]pop, map ext
>
> struct list_head *pcpu_chunk_lists __ro_after_init; /* chunk list slots */
>
> -/* chunks which need their map areas extended, protected by pcpu_lock */
> -static LIST_HEAD(pcpu_map_extend_chunks);
> -
> /*
> * The number of empty populated pages, protected by pcpu_lock.
> * The reserved chunk doesn't contribute to the count.
> --
> 2.34.1
>
>

Acked-by: Dennis Zhou <[email protected]>

Thanks,
Dennis