diff options
Diffstat (limited to 'mm/khugepaged.c')
| -rw-r--r-- | mm/khugepaged.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 04c22b5309d7..d1951ed572f8 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1003,6 +1003,7 @@ static int __collapse_huge_page_swapin(struct mm_struct *mm, unsigned long address, end = haddr + (HPAGE_PMD_NR * PAGE_SIZE); int result; pte_t *pte = NULL; + spinlock_t *ptl; for (address = haddr; address < end; address += PAGE_SIZE) { struct vm_fault vmf = { @@ -1014,7 +1015,7 @@ static int __collapse_huge_page_swapin(struct mm_struct *mm, }; if (!pte++) { - pte = pte_offset_map(pmd, address); + pte = pte_offset_map_nolock(mm, pmd, address, &ptl); if (!pte) { mmap_read_unlock(mm); result = SCAN_PMD_NULL; @@ -1022,11 +1023,12 @@ static int __collapse_huge_page_swapin(struct mm_struct *mm, } } - vmf.orig_pte = *pte; + vmf.orig_pte = ptep_get_lockless(pte); if (!is_swap_pte(vmf.orig_pte)) continue; vmf.pte = pte; + vmf.ptl = ptl; ret = do_swap_page(&vmf); /* Which unmaps pte (after perhaps re-checking the entry) */ pte = NULL; |