diff options
Diffstat (limited to 'mm/gup.c')
| -rw-r--r-- | mm/gup.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/gup.c b/mm/gup.c index 40abe4c9038345..1e67461b273309 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -253,6 +253,13 @@ struct page *follow_page_mask(struct vm_area_struct *vma, return page; return no_page_table(vma, flags); } + if (pud_devmap(*pud)) { + ptl = pud_lock(mm, pud); + page = follow_devmap_pud(vma, address, pud, flags); + spin_unlock(ptl); + if (page) + return page; + } if (unlikely(pud_bad(*pud))) return no_page_table(vma, flags); |