Commit 1c7bf6c5 authored Jul 15, 2025 by Anthony Yznaga Committed by Andrew Morton Jul 24, 2025

mm: remove call to hugetlb_free_pgd_range()

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>

parent d0813985

mm/memory.c

+18 −24

Original line number	Diff line number	Diff line
		@@ -379,19 +379,13 @@ void free_pgtables(struct mmu_gather tlb, struct ma_state mas,
		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);

		/*
		* Optimization: gather nearby vmas into one call down
		*/
		while (next && next->vm_start <= vma->vm_end + PMD_SIZE
		&& !is_vm_hugetlb_page(next)) {
		while (next && next->vm_start <= vma->vm_end + PMD_SIZE) {
		vma = next;
		next = mas_find(mas, ceiling - 1);
		if (unlikely(xa_is_zero(next)))
		@@ -402,9 +396,9 @@ void free_pgtables(struct mmu_gather tlb, struct ma_state mas,
		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);
		}