linux-kernel - [PATCH 3/5] userfualtfd: Replace lru_cache functions with folio

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Date:   Tue,  1 Nov 2022 10:53:24 -0700
From:   "Vishal Moola (Oracle)" <vishal.moola@...il.com>
To:     linux-mm@...ck.org
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        akpm@...ux-foundation.org, willy@...radead.org, miklos@...redi.hu,
        "Vishal Moola (Oracle)" <vishal.moola@...il.com>
Subject: [PATCH 3/5] userfualtfd: Replace lru_cache functions with folio_add functions

Replaces lru_cache_add() and lru_cache_add_inactive_or_unevictable()
with folio_add_lru() and folio_add_lru_vma(). This is in preparation for
the removal of lru_cache_add().

Signed-off-by: Vishal Moola (Oracle) <vishal.moola@...il.com>
---
 mm/userfaultfd.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c
index e24e8a47ce8a..2560973b00d8 100644
--- a/mm/userfaultfd.c
+++ b/mm/userfaultfd.c
@@ -66,6 +66,7 @@ int mfill_atomic_install_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
 	bool vm_shared = dst_vma->vm_flags & VM_SHARED;
 	bool page_in_cache = page->mapping;
 	spinlock_t *ptl;
+	struct folio *folio;
 	struct inode *inode;
 	pgoff_t offset, max_off;
 
@@ -113,14 +114,15 @@ int mfill_atomic_install_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
 	if (!pte_none_mostly(*dst_pte))
 		goto out_unlock;
 
+	folio = page_folio(page);
 	if (page_in_cache) {
 		/* Usually, cache pages are already added to LRU */
 		if (newly_allocated)
-			lru_cache_add(page);
+			folio_add_lru(folio);
 		page_add_file_rmap(page, dst_vma, false);
 	} else {
 		page_add_new_anon_rmap(page, dst_vma, dst_addr);
-		lru_cache_add_inactive_or_unevictable(page, dst_vma);
+		folio_add_lru_vma(folio, dst_vma);
 	}
 
 	/*
-- 
2.38.1