+ mm-kill-find_min_pfn_with_active_regions.patch added to mm-unstable branch

+ mm-kill-find_min_pfn_with_active_regions.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm: kill find_min_pfn_with_active_regions()
has been added to the -mm mm-unstable branch.  Its filename is
     mm-kill-find_min_pfn_with_active_regions.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-kill-find_min_pfn_with_active_regions.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: mm: kill find_min_pfn_with_active_regions()
Date: Mon, 15 Aug 2022 19:10:17 +0800

find_min_pfn_with_active_regions() is only called from free_area_init(). 
Open-code the PHYS_PFN(memblock_start_of_DRAM()) into free_area_init(),
and kill find_min_pfn_with_active_regions().

Link: https://lkml.kernel.org/r/20220815111017.39341-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/mm.h |    1 -
 mm/page_alloc.c    |   13 +------------
 2 files changed, 1 insertion(+), 13 deletions(-)

--- a/include/linux/mm.h~mm-kill-find_min_pfn_with_active_regions
+++ a/include/linux/mm.h
@@ -2512,7 +2512,6 @@ extern unsigned long absent_pages_in_ran
 						unsigned long end_pfn);
 extern void get_pfn_range_for_nid(unsigned int nid,
 			unsigned long *start_pfn, unsigned long *end_pfn);
-extern unsigned long find_min_pfn_with_active_regions(void);
 
 #ifndef CONFIG_NUMA
 static inline int early_pfn_to_nid(unsigned long pfn)
--- a/mm/page_alloc.c~mm-kill-find_min_pfn_with_active_regions
+++ a/mm/page_alloc.c
@@ -7917,17 +7917,6 @@ unsigned long __init node_map_pfn_alignm
 	return ~accl_mask + 1;
 }
 
-/**
- * find_min_pfn_with_active_regions - Find the minimum PFN registered
- *
- * Return: the minimum PFN based on information provided via
- * memblock_set_node().
- */
-unsigned long __init find_min_pfn_with_active_regions(void)
-{
-	return PHYS_PFN(memblock_start_of_DRAM());
-}
-
 /*
  * early_calculate_totalpages()
  * Sum pages in active regions for movable zone.
@@ -8220,7 +8209,7 @@ void __init free_area_init(unsigned long
 	memset(arch_zone_highest_possible_pfn, 0,
 				sizeof(arch_zone_highest_possible_pfn));
 
-	start_pfn = find_min_pfn_with_active_regions();
+	start_pfn = PHYS_PFN(memblock_start_of_DRAM());
 	descending = arch_has_descending_max_zone_pfns();
 
 	for (i = 0; i < MAX_NR_ZONES; i++) {
_

Patches currently in -mm which might be from wangkefeng.wang@huawei.com are

mm-memory-failure-cleanup-try_to_split_thp_page.patch
mm-add-warning-if-__vm_enough_memory-fails.patch
mm-kill-find_min_pfn_with_active_regions.patch