+ mm-huge_memory-make-__do_huge_pmd_anonymous_page-to-take-a-folio.patch added to mm-unstable branch

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

The patch titled
     Subject: mm: huge_memory: make __do_huge_pmd_anonymous_page() take a folio
has been added to the -mm mm-unstable branch.  Its filename is
     mm-huge_memory-make-__do_huge_pmd_anonymous_page-to-take-a-folio.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-huge_memory-make-__do_huge_pmd_anonymous_page-to-take-a-folio.patch

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

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------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: mm: huge_memory: make __do_huge_pmd_anonymous_page() take a folio
Date: Thu, 12 Jan 2023 16:30:00 +0800

Patch series "mm: remove cgroup_throttle_swaprate() completely".

Convert all the caller functions of cgroup_throttle_swaprate() to use
folios, and use folio_throttle_swaprate(), which allows us to remove
cgroup_throttle_swaprate() completely.


This patch (of 7):

Make __do_huge_pmd_anonymous_page() take a folio and convert related
functions to use folios.

Link: https://lkml.kernel.org/r/20230112083006.163393-1-wangkefeng.wang@huawei.com
Link: https://lkml.kernel.org/r/20230112083006.163393-2-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/huge_memory.c |   23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

--- a/mm/huge_memory.c~mm-huge_memory-make-__do_huge_pmd_anonymous_page-to-take-a-folio
+++ a/mm/huge_memory.c
@@ -652,22 +652,23 @@ unsigned long thp_get_unmapped_area(stru
 EXPORT_SYMBOL_GPL(thp_get_unmapped_area);
 
 static vm_fault_t __do_huge_pmd_anonymous_page(struct vm_fault *vmf,
-			struct page *page, gfp_t gfp)
+			struct folio *folio, gfp_t gfp)
 {
 	struct vm_area_struct *vma = vmf->vma;
+	struct page *page = &folio->page;
 	pgtable_t pgtable;
 	unsigned long haddr = vmf->address & HPAGE_PMD_MASK;
 	vm_fault_t ret = 0;
 
-	VM_BUG_ON_PAGE(!PageCompound(page), page);
+	VM_BUG_ON_FOLIO(!folio_test_large(folio), folio);
 
-	if (mem_cgroup_charge(page_folio(page), vma->vm_mm, gfp)) {
-		put_page(page);
+	if (mem_cgroup_charge(folio, vma->vm_mm, gfp)) {
+		folio_put(folio);
 		count_vm_event(THP_FAULT_FALLBACK);
 		count_vm_event(THP_FAULT_FALLBACK_CHARGE);
 		return VM_FAULT_FALLBACK;
 	}
-	cgroup_throttle_swaprate(page, gfp);
+	folio_throttle_swaprate(folio, gfp);
 
 	pgtable = pte_alloc_one(vma->vm_mm);
 	if (unlikely(!pgtable)) {
@@ -677,11 +678,11 @@ static vm_fault_t __do_huge_pmd_anonymou
 
 	clear_huge_page(page, vmf->address, HPAGE_PMD_NR);
 	/*
-	 * The memory barrier inside __SetPageUptodate makes sure that
+	 * The memory barrier inside __folio_mark_uptodate makes sure that
 	 * clear_huge_page writes become visible before the set_pmd_at()
 	 * write.
 	 */
-	__SetPageUptodate(page);
+	__folio_mark_uptodate(folio);
 
 	vmf->ptl = pmd_lock(vma->vm_mm, vmf->pmd);
 	if (unlikely(!pmd_none(*vmf->pmd))) {
@@ -696,7 +697,7 @@ static vm_fault_t __do_huge_pmd_anonymou
 		/* Deliver the page fault to userland */
 		if (userfaultfd_missing(vma)) {
 			spin_unlock(vmf->ptl);
-			put_page(page);
+			folio_put(folio);
 			pte_free(vma->vm_mm, pgtable);
 			ret = handle_userfault(vmf, VM_UFFD_MISSING);
 			VM_BUG_ON(ret & VM_FAULT_FALLBACK);
@@ -706,7 +707,7 @@ static vm_fault_t __do_huge_pmd_anonymou
 		entry = mk_huge_pmd(page, vma->vm_page_prot);
 		entry = maybe_pmd_mkwrite(pmd_mkdirty(entry), vma);
 		page_add_new_anon_rmap(page, vma, haddr);
-		lru_cache_add_inactive_or_unevictable(page, vma);
+		folio_add_lru_vma(folio, vma);
 		pgtable_trans_huge_deposit(vma->vm_mm, vmf->pmd, pgtable);
 		set_pmd_at(vma->vm_mm, haddr, vmf->pmd, entry);
 		update_mmu_cache_pmd(vma, vmf->address, vmf->pmd);
@@ -723,7 +724,7 @@ unlock_release:
 release:
 	if (pgtable)
 		pte_free(vma->vm_mm, pgtable);
-	put_page(page);
+	folio_put(folio);
 	return ret;
 
 }
@@ -836,7 +837,7 @@ vm_fault_t do_huge_pmd_anonymous_page(st
 		count_vm_event(THP_FAULT_FALLBACK);
 		return VM_FAULT_FALLBACK;
 	}
-	return __do_huge_pmd_anonymous_page(vmf, &folio->page, gfp);
+	return __do_huge_pmd_anonymous_page(vmf, folio, gfp);
 }
 
 static void insert_pfn_pmd(struct vm_area_struct *vma, unsigned long addr,
_

Patches currently in -mm which might be from wangkefeng.wang@huawei.com are

mm-hwposion-support-recovery-from-ksm_might_need_to_copy.patch
mm-hwposion-support-recovery-from-ksm_might_need_to_copy-v3.patch
mm-huge_memory-convert-madvise_free_huge_pmd-to-use-a-folio.patch
mm-swap-convert-mark_page_lazyfree-to-folio_mark_lazyfree.patch
mm-huge_memory-convert-split_huge_pages_all-to-use-a-folio.patch
mm-page_idle-convert-page-idle-to-use-a-folio.patch
mm-damon-introduce-damon_get_folio.patch
mm-damon-convert-damon_ptep-pmdp_mkold-to-use-a-folio.patch
mm-damon-paddr-convert-damon_pa_-to-use-a-folio.patch
mm-damon-vaddr-convert-damon_young_pmd_entry-to-use-a-folio.patch
mm-damon-remove-unneeded-damon_get_page.patch
mm-damon-vaddr-convert-hugetlb-related-functions-to-use-a-folio.patch
mm-madvise-use-vm_normal_folio-in-madvise_free_pte_range.patch
mm-huge_memory-make-__do_huge_pmd_anonymous_page-to-take-a-folio.patch
mm-memory-convert-do_anonymous_page-to-use-a-folio.patch
mm-memory-convert-do_cow_fault-to-use-folios.patch
mm-memory-convert-page_copy_prealloc-to-use-a-folio.patch
mm-memory-convert-wp_page_copy-to-use-folios.patch
mm-memory-use-folio_throttle_swaprate-in-do_swap_page.patch
mm-swap-remove-unneeded-cgroup_throttle_swaprate.patch