[to-be-updated] mmpage_alloc-drop-unnecessary-checks-from-pfn_range_valid_contig.patch removed from -mm tree

[to-be-updated] mmpage_alloc-drop-unnecessary-checks-from-pfn_range_valid_contig.patch removed from -mm tree

[akpm]

The patch titled
     Subject: mm,page_alloc: drop unnecessary checks from pfn_range_valid_contig
has been removed from the -mm tree.  Its filename was
     mmpage_alloc-drop-unnecessary-checks-from-pfn_range_valid_contig.patch

This patch was dropped because an updated version will be merged

------------------------------------------------------
From: Oscar Salvador <osalvador@suse.de>
Subject: mm,page_alloc: drop unnecessary checks from pfn_range_valid_contig

pfn_range_valid_contig() bails out when it finds an in-use page or a
hugetlb page, among other things.

We can drop the in-use page check since __alloc_contig_pages can migrate
away those pages, and the hugetlb page check can go too since
isolate_migratepages_range is now capable of dealing with hugetlb pages. 
Either way, those checks are racy so let the end function handle it when
the time comes.

Link: https://lkml.kernel.org/r/20210319132004.4341-6-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Suggested-by: David Hildenbrand <david@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/page_alloc.c |    6 ------
 1 file changed, 6 deletions(-)

--- a/mm/page_alloc.c~mmpage_alloc-drop-unnecessary-checks-from-pfn_range_valid_contig
+++ a/mm/page_alloc.c
@@ -8897,12 +8897,6 @@ static bool pfn_range_valid_contig(struc
 
 		if (PageReserved(page))
 			return false;
-
-		if (page_count(page) > 0)
-			return false;
-
-		if (PageHuge(page))
-			return false;
 	}
 	return true;
 }
_

Patches currently in -mm which might be from osalvador@suse.de are

x86-vmemmap-drop-handling-of-4k-unaligned-vmemmap-range.patch
x86-vmemmap-drop-handling-of-1gb-vmemmap-ranges.patch
x86-vmemmap-handle-unpopulated-sub-pmd-ranges.patch
x86-vmemmap-handle-unpopulated-sub-pmd-ranges-fix.patch
x86-vmemmap-optimize-for-consecutive-sections-in-partial-populated-pmds.patch
mmmemory_hotplug-allocate-memmap-from-the-added-memory-range.patch
acpimemhotplug-enable-mhp_memmap_on_memory-when-supported.patch
mmmemory_hotplug-add-kernel-boot-option-to-enable-memmap_on_memory.patch
x86-kconfig-introduce-arch_mhp_memmap_on_memory_enable.patch
arm64-kconfig-introduce-arch_mhp_memmap_on_memory_enable.patch