mm/filemap.c: avoid always dirtying mapping->flags on O_DIRECT

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / madvise.c

diff --git a/mm/madvise.c b/mm/madvise.c
index 6975bc8..539eeb9 100644 (file)
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -343,10 +343,11 @@ static long madvise_remove(struct vm_area_struct *vma,
  */
 static int madvise_hwpoison(int bhv, unsigned long start, unsigned long end)
 {
+       struct page *p;
        if (!capable(CAP_SYS_ADMIN))
                return -EPERM;
-       for (; start < end; start += PAGE_SIZE) {
-               struct page *p;
+       for (; start < end; start += PAGE_SIZE <<
+                               compound_order(compound_head(p))) {
                int ret;
 
                ret = get_user_pages_fast(start, 1, 0, &p);