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mm/damon/ops-common: refactor to use {pte|pmd}p_clear_young_notify()

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With the fix in place to atomically test and clear young on ptes and pmds,
simplify the code to handle the clearing for both the primary mmu and the
mmu notifier with a single API call.

Link: https://lkml.kernel.org/r/20230602092949.545577-4-ryan.roberts@arm.com
Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Acked-by: Yu Zhao <yuzhao@google.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Ryan Roberts 2023-06-02 10:29:48 +01:00 committed by Andrew Morton
parent c11d34fa13
commit fa8c919dac
1 changed files with 2 additions and 20 deletions
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22
mm/damon/ops-common.c
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@ -39,21 +39,12 @@ struct folio *damon_get_folio(unsigned long pfn)
void damon_ptep_mkold(pte_t *pte, struct vm_area_struct *vma, unsigned long addr)
{
bool referenced = false;
struct folio *folio = damon_get_folio(pte_pfn(*pte));
if (!folio)
return;
if (ptep_test_and_clear_young(vma, addr, pte))
referenced = true;
#ifdef CONFIG_MMU_NOTIFIER
if (mmu_notifier_clear_young(vma->vm_mm, addr, addr + PAGE_SIZE))
referenced = true;
#endif /* CONFIG_MMU_NOTIFIER */
if (referenced)
if (ptep_clear_young_notify(vma, addr, pte))
folio_set_young(folio);
folio_set_idle(folio);
@ -63,21 +54,12 @@ void damon_ptep_mkold(pte_t *pte, struct vm_area_struct *vma, unsigned long addr
void damon_pmdp_mkold(pmd_t *pmd, struct vm_area_struct *vma, unsigned long addr)
{
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
bool referenced = false;
struct folio *folio = damon_get_folio(pmd_pfn(*pmd));
if (!folio)
return;
if (pmdp_test_and_clear_young(vma, addr, pmd))
referenced = true;
#ifdef CONFIG_MMU_NOTIFIER
if (mmu_notifier_clear_young(vma->vm_mm, addr, addr + HPAGE_PMD_SIZE))
referenced = true;
#endif /* CONFIG_MMU_NOTIFIER */
if (referenced)
if (pmdp_clear_young_notify(vma, addr, pmd))
folio_set_young(folio);
folio_set_idle(folio);