# Re: \[PATCH v1 04/12\] mm/memory\_hotplug: remove nid parameter from arch\_remove\_memory()

- From: Michael Ellerman \<mpe@ellerman.id.au\>
- Date: 2021-06-08 10:50:40 
- List: linux-sh
- Page: https://ratatoskr.run/linux-sh/2021/06/1406306
- Thread: https://ratatoskr.run/linux-mm/2021/06/1405552/t.md

```text
David Hildenbrand [ref] writes:

> The parameter is unused, let's remove it.
>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Paul Mackerras <redacted>
> Cc: Heiko Carstens <hca@linux.ibm.com>
> Cc: Vasily Gorbik <gor@linux.ibm.com>
> Cc: Christian Borntraeger <redacted>
> Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
> Cc: Rich Felker <dalias@libc.org>
> Cc: Dave Hansen <dave.hansen@linux.intel.com>
> Cc: Andy Lutomirski <luto@kernel.org>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Thomas Gleixner <redacted>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: x86@kernel.org
> Cc: "H. Peter Anvin" <hpa@zytor.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Anshuman Khandual <redacted>
> Cc: Ard Biesheuvel <ardb@kernel.org>
> Cc: Mike Rapoport <rppt@kernel.org>
> Cc: Nicholas Piggin <npiggin@gmail.com>
> Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
> Cc: Baoquan He <redacted>
> Cc: Laurent Dufour <redacted>
> Cc: Sergei Trofimovich <redacted>
> Cc: Kefeng Wang <redacted>
> Cc: Michel Lespinasse <redacted>
> Cc: Christophe Leroy <redacted>
> Cc: "Aneesh Kumar K.V" <redacted>
> Cc: Thiago Jung Bauermann <redacted>
> Cc: Joe Perches <joe@perches.com>
> Cc: Pierre Morel <redacted>
> Cc: Jia He <redacted>
> Cc: <redacted>
> Cc: <redacted>
> Cc: <redacted>
> Cc: <redacted>
> Cc: <redacted>
> Signed-off-by: David Hildenbrand <redacted>
> ---
>  arch/arm64/mm/mmu.c            | 3 +--
>  arch/ia64/mm/init.c            | 3 +--
>  arch/powerpc/mm/mem.c          | 3 +--
>  arch/s390/mm/init.c            | 3 +--
>  arch/sh/mm/init.c              | 3 +--
>  arch/x86/mm/init_32.c          | 3 +--
>  arch/x86/mm/init_64.c          | 3 +--
>  include/linux/memory_hotplug.h | 3 +--
>  mm/memory_hotplug.c            | 4 ++--
>  mm/memremap.c                  | 5 +----
>  10 files changed, 11 insertions(+), 22 deletions(-)
>
...
> diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
> index 043bbeaf407c..fc5c36189c26 100644
> --- a/arch/powerpc/mm/mem.c
> +++ b/arch/powerpc/mm/mem.c
> @@ -115,8 +115,7 @@ int __ref arch_add_memory(int nid, u64 start, u64 size,
>  	return rc;
>  }
>  
> -void __ref arch_remove_memory(int nid, u64 start, u64 size,
> -			      struct vmem_altmap *altmap)
> +void __ref arch_remove_memory(u64 start, u64 size, struct vmem_altmap *altmap)
>  {
>  	unsigned long start_pfn = start >> PAGE_SHIFT;
>  	unsigned long nr_pages = size >> PAGE_SHIFT;

Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)

cheers
```