diff options
Diffstat (limited to 'mm/madvise.c')
| -rw-r--r-- | mm/madvise.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/mm/madvise.c b/mm/madvise.c index 0e3828eae9f8..b530a4986035 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -10,6 +10,7 @@ #include <linux/syscalls.h> #include <linux/mempolicy.h> #include <linux/page-isolation.h> +#include <linux/userfaultfd_k.h> #include <linux/hugetlb.h> #include <linux/falloc.h> #include <linux/sched.h> @@ -24,6 +25,8 @@ #include <asm/tlb.h> +#include "internal.h" + /* * Any behaviour which results in changes to the vma->vm_flags needs to * take mmap_sem for writing. Others, which simply traverse vmas, need @@ -473,10 +476,11 @@ static long madvise_dontneed(struct vm_area_struct *vma, unsigned long start, unsigned long end) { *prev = vma; - if (vma->vm_flags & (VM_LOCKED|VM_HUGETLB|VM_PFNMAP)) + if (!can_madv_dontneed_vma(vma)) return -EINVAL; - zap_page_range(vma, start, end - start, NULL); + madvise_userfault_dontneed(vma, prev, start, end); + zap_page_range(vma, start, end - start); return 0; } |