proc: convert smaps_pmd_entry to use a folio

Replace two calls to compound_head() with one.

Link: https://lkml.kernel.org/r/20240403171456.1445117-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Christian Brauner <brauner@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 6d4f60bc8824f616bdd212bf0c84529571ce14f5..8ff79bd427ec680a3fe73d03d31b3274e4d28afb 100644 (file)
--- 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;