From: SeongJae Park Date: Mon, 9 Jan 2023 21:33:32 +0000 (+0000) Subject: mm/damon/vaddr: record appropriate folio size when the access is not found X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7477d7560cb2c756d6a8ab165d9ed52537df54e7;p=linux.git mm/damon/vaddr: record appropriate folio size when the access is not found DAMON virtual address spaces monitoring operations set doesn't set folio size of the access checked address if access is not found. It could result in unnecessary and inefficient repeated check. Appropriately set the size regardless of access check result. Link: https://lkml.kernel.org/r/20230109213335.62525-4-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton --- diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c index c7b192006fe67..1fec16d7263e5 100644 --- a/mm/damon/vaddr.c +++ b/mm/damon/vaddr.c @@ -452,10 +452,9 @@ static int damon_young_pmd_entry(pmd_t *pmd, unsigned long addr, goto huge_out; if (pmd_young(*pmd) || !folio_test_idle(folio) || mmu_notifier_test_young(walk->mm, - addr)) { - *priv->folio_sz = HPAGE_PMD_SIZE; + addr)) priv->young = true; - } + *priv->folio_sz = HPAGE_PMD_SIZE; folio_put(folio); huge_out: spin_unlock(ptl); @@ -474,10 +473,9 @@ regular_page: if (!folio) goto out; if (pte_young(*pte) || !folio_test_idle(folio) || - mmu_notifier_test_young(walk->mm, addr)) { - *priv->folio_sz = folio_size(folio); + mmu_notifier_test_young(walk->mm, addr)) priv->young = true; - } + *priv->folio_sz = folio_size(folio); folio_put(folio); out: pte_unmap_unlock(pte, ptl); @@ -504,10 +502,9 @@ static int damon_young_hugetlb_entry(pte_t *pte, unsigned long hmask, folio_get(folio); if (pte_young(entry) || !folio_test_idle(folio) || - mmu_notifier_test_young(walk->mm, addr)) { - *priv->folio_sz = huge_page_size(h); + mmu_notifier_test_young(walk->mm, addr)) priv->young = true; - } + *priv->folio_sz = huge_page_size(h); folio_put(folio);