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Use ptep_get_lockless() variant for PTE reads when no lock is taken. Signed-off-by: Alexander Gordeev --- mm/page_vma_mapped.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/mm/page_vma_mapped.c b/mm/page_vma_mapped.c index b38a1d00c971..a4520bb10d2a 100644 --- a/mm/page_vma_mapped.c +++ b/mm/page_vma_mapped.c @@ -41,7 +41,7 @@ static bool map_pte(struct page_vma_mapped_walk *pvmw, = pmd_t *pmdvalp, if (!pvmw->pte) return false; =20 - ptent =3D ptep_get(pvmw->pte); + ptent =3D ptep_get_lockless(pvmw->pte); =20 if (pte_none(ptent)) { return false; @@ -219,17 +219,17 @@ bool page_vma_mapped_walk(struct page_vma_mapped_wa= lk *pvmw) restart: do { pgd =3D pgd_offset(mm, pvmw->address); - if (!pgd_present(*pgd)) { + if (!pgd_present(pgdp_get(pgd))) { step_forward(pvmw, PGDIR_SIZE); continue; } p4d =3D p4d_offset(pgd, pvmw->address); - if (!p4d_present(*p4d)) { + if (!p4d_present(p4dp_get(p4d))) { step_forward(pvmw, P4D_SIZE); continue; } pud =3D pud_offset(p4d, pvmw->address); - if (!pud_present(*pud)) { + if (!pud_present(pudp_get(pud))) { step_forward(pvmw, PUD_SIZE); continue; } @@ -244,7 +244,7 @@ bool page_vma_mapped_walk(struct page_vma_mapped_walk= *pvmw) =20 if (pmd_trans_huge(pmde) || pmd_is_migration_entry(pmde)) { pvmw->ptl =3D pmd_lock(mm, pvmw->pmd); - pmde =3D *pvmw->pmd; + pmde =3D pmdp_get(pvmw->pmd); if (!pmd_present(pmde)) { softleaf_t entry; =20 @@ -317,7 +317,7 @@ bool page_vma_mapped_walk(struct page_vma_mapped_walk= *pvmw) goto restart; } pvmw->pte++; - } while (pte_none(ptep_get(pvmw->pte))); + } while (pte_none(ptep_get_lockless(pvmw->pte))); =20 if (!pvmw->ptl) { spin_lock(ptl); --=20 2.51.0