linux-kernel - [PATCH 4/4] proc: Convert smaps_pmd

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Date: Wed,  3 Apr 2024 18:14:55 +0100
From: "Matthew Wilcox (Oracle)" <willy@...radead.org>
To: Andrew Morton <akpm@...ux-foundation.org>,
	Christian Brauner <brauner@...nel.org>
Cc: "Matthew Wilcox (Oracle)" <willy@...radead.org>,
	linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	linux-mm@...ck.org
Subject: [PATCH 4/4] proc: Convert smaps_pmd_entry to use a folio

Replace two calls to compound_head() with one.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
 fs/proc/task_mmu.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 6d4f60bc8824..8ff79bd427ec 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -578,6 +578,7 @@ static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr,
 	struct vm_area_struct *vma = walk->vma;
 	bool locked = !!(vma->vm_flags & VM_LOCKED);
 	struct page *page = NULL;
+	struct folio *folio;
 	bool migration = false;
 
 	if (pmd_present(*pmd)) {
@@ -592,11 +593,12 @@ static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr,
 	}
 	if (IS_ERR_OR_NULL(page))
 		return;
-	if (PageAnon(page))
+	folio = page_folio(page);
+	if (folio_test_anon(folio))
 		mss->anonymous_thp += HPAGE_PMD_SIZE;
-	else if (PageSwapBacked(page))
+	else if (folio_test_swapbacked(folio))
 		mss->shmem_thp += HPAGE_PMD_SIZE;
-	else if (is_zone_device_page(page))
+	else if (folio_is_zone_device(folio))
 		/* pass */;
 	else
 		mss->file_thp += HPAGE_PMD_SIZE;
-- 
2.43.0