+ mm-remove-call-to-hugetlb_free_pgd_range.patch added to mm-new branch

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

The patch titled
     Subject: mm: remove call to hugetlb_free_pgd_range()
has been added to the -mm mm-new branch.  Its filename is
     mm-remove-call-to-hugetlb_free_pgd_range.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-remove-call-to-hugetlb_free_pgd_range.patch

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

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
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fixup patches in mm-new.

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------------------------------------------------------
From: Anthony Yznaga <anthony.yznaga@oracle.com>
Subject: mm: remove call to hugetlb_free_pgd_range()
Date: Tue, 15 Jul 2025 18:26:10 -0700

With the removal of the last arch-specific implementation of
hugetlb_free_pgd_range(), hugetlb VMAs no longer need special handling
when freeing page tables.

Link: https://lkml.kernel.org/r/20250716012611.10369-3-anthony.yznaga@oracle.com
Signed-off-by: Anthony Yznaga <anthony.yznaga@oracle.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Oscar Salvador <osalvador@suse.de>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: David Hildenbrand <david@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memory.c |   42 ++++++++++++++++++------------------------
 1 file changed, 18 insertions(+), 24 deletions(-)

--- a/mm/memory.c~mm-remove-call-to-hugetlb_free_pgd_range
+++ a/mm/memory.c
@@ -379,32 +379,26 @@ void free_pgtables(struct mmu_gather *tl
 			vma_start_write(vma);
 		unlink_anon_vmas(vma);
 
-		if (is_vm_hugetlb_page(vma)) {
-			unlink_file_vma(vma);
-			hugetlb_free_pgd_range(tlb, addr, vma->vm_end,
-				floor, next ? next->vm_start : ceiling);
-		} else {
-			unlink_file_vma_batch_init(&vb);
-			unlink_file_vma_batch_add(&vb, vma);
+		unlink_file_vma_batch_init(&vb);
+		unlink_file_vma_batch_add(&vb, vma);
 
-			/*
-			 * Optimization: gather nearby vmas into one call down
-			 */
-			while (next && next->vm_start <= vma->vm_end + PMD_SIZE
-			       && !is_vm_hugetlb_page(next)) {
-				vma = next;
-				next = mas_find(mas, ceiling - 1);
-				if (unlikely(xa_is_zero(next)))
-					next = NULL;
-				if (mm_wr_locked)
-					vma_start_write(vma);
-				unlink_anon_vmas(vma);
-				unlink_file_vma_batch_add(&vb, vma);
-			}
-			unlink_file_vma_batch_final(&vb);
-			free_pgd_range(tlb, addr, vma->vm_end,
-				floor, next ? next->vm_start : ceiling);
+		/*
+		 * Optimization: gather nearby vmas into one call down
+		 */
+		while (next && next->vm_start <= vma->vm_end + PMD_SIZE) {
+			vma = next;
+			next = mas_find(mas, ceiling - 1);
+			if (unlikely(xa_is_zero(next)))
+				next = NULL;
+			if (mm_wr_locked)
+				vma_start_write(vma);
+			unlink_anon_vmas(vma);
+			unlink_file_vma_batch_add(&vb, vma);
 		}
+		unlink_file_vma_batch_final(&vb);
+
+		free_pgd_range(tlb, addr, vma->vm_end,
+			floor, next ? next->vm_start : ceiling);
 		vma = next;
 	} while (vma);
 }
_

Patches currently in -mm which might be from anthony.yznaga@oracle.com are

sparc64-remove-hugetlb_free_pgd_range.patch
mm-remove-call-to-hugetlb_free_pgd_range.patch
mm-drop-hugetlb_free_pgd_range.patch