Re: [PATCH v2 00/10] mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 2)

[Andrew Morton <akpm@linux-foundation.org>]

On Thu, 16 Jul 2026 16:50:59 +0200 "David Hildenbrand (Arm)" <david@kernel.org> wrote:

> Let's remove the remaining pieces of CONFIG_HAVE_BOOTMEM_INFO_NODE,
> performing some smaller cleanups around freeing of reserved vmemmap
> pages on the way.
> 
> Tested on x86-64 with hugetlb vmemmap optimization in combination with
> KMEMLEAK. Heavily cross-compiled.
> 

Thanks, I updated mm-unstable to this version.

> Changes in v2:
> - In patch #2, reverse the order of setting the page count and clearing
>   PG_reserved, and modify the patch description accordingly.

Here's how v2 altered mm.git:

--- a/mm/page_alloc.c~3
+++ a/mm/page_alloc.c
@@ -6410,8 +6410,8 @@ void free_reserved_pages(struct page *pa
 
 	for (i = 0; i < nr_pages; i++) {
 		clear_page_tag_ref(page + i);
-		set_page_count(page + i, 0);
 		ClearPageReserved(page + i);
+		set_page_count(page + i, 0);
 	}
 	adjust_managed_page_count(page, nr_pages);
 	__free_frozen_pages(page, order, FPI_NONE);
_