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proc: convert clear_refs_pte_range to use a folio

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Patch series "Remove page_idle and page_young wrappers".

There are only a couple of places left using the page wrappers for idle &
young tracking.  Convert the two users in proc and then we can remove the
wrappers.  That enables the further simplification of autogenerating the
definitions when CONFIG_PAGE_IDLE_FLAG is disabled.  


This patch (of 4):

Replaces four calls to compound_head() with two.

Link: https://lkml.kernel.org/r/20240402201252.917342-1-willy@infradead.org
Link: https://lkml.kernel.org/r/20240402201252.917342-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2024-04-02 21:12:48 +01:00 committed by Andrew Morton
parent 43849758fd
commit 03aa577f3b
1 changed files with 8 additions and 8 deletions
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16
fs/proc/task_mmu.c
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@ -1161,7 +1161,7 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr,
struct vm_area_struct *vma = walk->vma;
pte_t *pte, ptent;
spinlock_t *ptl;
struct page *page;
struct folio *folio;
ptl = pmd_trans_huge_lock(pmd, vma);
if (ptl) {
@ -1173,12 +1173,12 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr,
if (!pmd_present(*pmd))
goto out;
page = pmd_page(*pmd);
folio = pmd_folio(*pmd);
/* Clear accessed and referenced bits. */
pmdp_test_and_clear_young(vma, addr, pmd);
test_and_clear_page_young(page);
ClearPageReferenced(page);
folio_test_clear_young(folio);
folio_clear_referenced(folio);
out:
spin_unlock(ptl);
return 0;
@ -1200,14 +1200,14 @@ out:
if (!pte_present(ptent))
continue;
page = vm_normal_page(vma, addr, ptent);
if (!page)
folio = vm_normal_folio(vma, addr, ptent);
if (!folio)
continue;
/* Clear accessed and referenced bits. */
ptep_test_and_clear_young(vma, addr, pte);
test_and_clear_page_young(page);
ClearPageReferenced(page);
folio_test_clear_young(folio);
folio_clear_referenced(folio);
}
pte_unmap_unlock(pte - 1, ptl);
cond_resched();