scripts/spelling.txt: add "againt" pattern and fix typo instances

[mirror_ubuntu-jammy-kernel.git] / mm / pgtable-generic.c

diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
index 06a005b979a763cb4afbf0e57fe9c7f70d2c0c92..4ed5908c65b0f17d29f128f0f0b6e21ca9a53c36 100644 (file)
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -84,20 +84,6 @@ pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long address,
 
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 
-#ifndef __HAVE_ARCH_FLUSH_PMD_TLB_RANGE
-
-/*
- * ARCHes with special requirements for evicting THP backing TLB entries can
- * implement this. Otherwise also, it can help optimize normal TLB flush in
- * THP regime. stock flush_tlb_range() typically has optimization to nuke the
- * entire TLB if flush span is greater than a threshold, which will
- * likely be true for a single huge page. Thus a single thp flush will
- * invalidate the entire TLB which is not desirable.
- * e.g. see arch/arc: flush_pmd_tlb_range
- */
-#define flush_pmd_tlb_range(vma, addr, end)    flush_tlb_range(vma, addr, end)
-#endif
-
 #ifndef __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS
 int pmdp_set_access_flags(struct vm_area_struct *vma,
                          unsigned long address, pmd_t *pmdp,
@@ -137,6 +123,20 @@ pmd_t pmdp_huge_clear_flush(struct vm_area_struct *vma, unsigned long address,
        flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
        return pmd;
 }
+
+#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
+pud_t pudp_huge_clear_flush(struct vm_area_struct *vma, unsigned long address,
+                           pud_t *pudp)
+{
+       pud_t pud;
+
+       VM_BUG_ON(address & ~HPAGE_PUD_MASK);
+       VM_BUG_ON(!pud_trans_huge(*pudp) && !pud_devmap(*pudp));
+       pud = pudp_huge_get_and_clear(vma->vm_mm, address, pudp);
+       flush_pud_tlb_range(vma, address, address + HPAGE_PUD_SIZE);
+       return pud;
+}
+#endif
 #endif
 
 #ifndef __HAVE_ARCH_PGTABLE_DEPOSIT