From: David Hildenbrand <david@redhat.com> mainline inclusion from mainline-v6.8-rc1 commit 35668a4321461505dcc39b56a0d97b0ba2c99668 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I9CESE CVE: NA ------------------------------------------------- Let's convert __collapse_huge_page_copy_succeeded() and collapse_pte_mapped_thp(). While at it, perform some more folio conversion in __collapse_huge_page_copy_succeeded(). We can get rid of release_pte_page(). Link: https://lkml.kernel.org/r/20231220224504.646757-27-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Yin Fengwei <fengwei.yin@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> (cherry picked from commit 35668a4321461505dcc39b56a0d97b0ba2c99668) Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> --- mm/khugepaged.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 37ff3679043c..89b47a6e24af 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -501,11 +501,6 @@ static void release_pte_folio(struct folio *folio) folio_putback_lru(folio); } -static void release_pte_page(struct page *page) -{ - release_pte_folio(page_folio(page)); -} - static void release_pte_pages(pte_t *pte, pte_t *_pte, struct list_head *compound_pagelist) { @@ -694,6 +689,7 @@ static void __collapse_huge_page_copy_succeeded(pte_t *pte, spinlock_t *ptl, struct list_head *compound_pagelist) { + struct folio *src_folio; struct page *src_page; struct page *tmp; pte_t *_pte; @@ -715,17 +711,18 @@ static void __collapse_huge_page_copy_succeeded(pte_t *pte, } } else { src_page = pte_page(pteval); - if (!PageCompound(src_page)) - release_pte_page(src_page); + src_folio = page_folio(src_page); + if (!folio_test_large(src_folio)) + release_pte_folio(src_folio); /* * ptl mostly unnecessary, but preempt has to * be disabled to update the per-cpu stats - * inside page_remove_rmap(). + * inside folio_remove_rmap_pte(). */ spin_lock(ptl); ptep_clear(vma->vm_mm, address, _pte); add_reliable_page_counter(src_page, vma->vm_mm, 1); - page_remove_rmap(src_page, vma, false); + folio_remove_rmap_pte(src_folio, src_page, vma); spin_unlock(ptl); free_page_and_swap_cache(src_page); } @@ -1643,7 +1640,7 @@ int collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr, * PTE dirty? Shmem page is already dirty; file is read-only. */ ptep_clear(mm, addr, pte); - page_remove_rmap(page, vma, false); + folio_remove_rmap_pte(folio, page, vma); add_reliable_page_counter(page, mm, -1); nr_ptes++; } -- 2.27.0