Re: [PATCH v8 1/1] mm/page_alloc.c: refactor initialization of struct page for holes in memory layout

On Thu, Feb 25, 2021 at 04:08:51PM -0800, Andrew Morton wrote:

On Fri, 26 Feb 2021 00:43:51 +0200 Mike Rapoport rppt@kernel.org wrote:

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From: Mike Rapoport rppt@linux.ibm.com

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void __meminit __weak memmap_init_zone(struct zone *zone) { unsigned long zone_start_pfn = zone->zone_start_pfn; unsigned long zone_end_pfn = zone_start_pfn + zone->spanned_pages; int i, nid = zone_to_nid(zone), zone_id = zone_idx(zone);

• static unsigned long hole_pfn = 0;

static implies that pgdat->node_zones[] is alwyas sorted in ascending pfn order. Always true?

Yes.