linux-kernel - [PATCH -next 2/7] mm: memory: convert do_anonymous

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Message-ID: <20230112083006.163393-3-wangkefeng.wang@huawei.com>
Date:   Thu, 12 Jan 2023 16:30:01 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     <akpm@...ux-foundation.org>, <willy@...radead.org>,
        <linux-mm@...ck.org>
CC:     <linux-kernel@...r.kernel.org>,
        Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH -next 2/7] mm: memory: convert do_anonymous_page() to use a folio

Convert do_anonymous_page() to use a folio and replace related functions
to folio functions.

Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 mm/memory.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/mm/memory.c b/mm/memory.c
index 56b571c83a0e..1cfdb0fd8d79 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4002,6 +4002,7 @@ static vm_fault_t do_anonymous_page(struct vm_fault *vmf)
 {
 	struct vm_area_struct *vma = vmf->vma;
 	struct page *page;
+	struct folio *folio;
 	vm_fault_t ret = 0;
 	pte_t entry;
 
@@ -4055,16 +4056,17 @@ static vm_fault_t do_anonymous_page(struct vm_fault *vmf)
 	if (!page)
 		goto oom;
 
-	if (mem_cgroup_charge(page_folio(page), vma->vm_mm, GFP_KERNEL))
+	folio = page_folio(page);
+	if (mem_cgroup_charge(folio, vma->vm_mm, GFP_KERNEL))
 		goto oom_free_page;
-	cgroup_throttle_swaprate(page, GFP_KERNEL);
+	folio_throttle_swaprate(folio, GFP_KERNEL);
 
 	/*
-	 * The memory barrier inside __SetPageUptodate makes sure that
+	 * The memory barrier inside __folio_mark_uptodate makes sure that
 	 * preceding stores to the page contents become visible before
 	 * the set_pte_at() write.
 	 */
-	__SetPageUptodate(page);
+	__folio_mark_uptodate(folio);
 
 	entry = mk_pte(page, vma->vm_page_prot);
 	entry = pte_sw_mkyoung(entry);
@@ -4085,13 +4087,13 @@ static vm_fault_t do_anonymous_page(struct vm_fault *vmf)
 	/* Deliver the page fault to userland, check inside PT lock */
 	if (userfaultfd_missing(vma)) {
 		pte_unmap_unlock(vmf->pte, vmf->ptl);
-		put_page(page);
+		folio_put(folio);
 		return handle_userfault(vmf, VM_UFFD_MISSING);
 	}
 
 	inc_mm_counter(vma->vm_mm, MM_ANONPAGES);
 	page_add_new_anon_rmap(page, vma, vmf->address);
-	lru_cache_add_inactive_or_unevictable(page, vma);
+	folio_add_lru_vma(folio, vma);
 setpte:
 	set_pte_at(vma->vm_mm, vmf->address, vmf->pte, entry);
 
@@ -4101,10 +4103,10 @@ static vm_fault_t do_anonymous_page(struct vm_fault *vmf)
 	pte_unmap_unlock(vmf->pte, vmf->ptl);
 	return ret;
 release:
-	put_page(page);
+	folio_put(folio);
 	goto unlock;
 oom_free_page:
-	put_page(page);
+	folio_put(folio);
 oom:
 	return VM_FAULT_OOM;
 }
-- 
2.35.3