These changes are a raw update to a vanilla kernel 4.1.10, with the

[kvmfornfv.git] / kernel / include / linux / skbuff.h

diff --git a/kernel/include/linux/skbuff.h b/kernel/include/linux/skbuff.h
index 26a9103..b425391 100644 (file)
--- a/kernel/include/linux/skbuff.h
+++ b/kernel/include/linux/skbuff.h
@@ -1597,20 +1597,16 @@ static inline void __skb_fill_page_desc(struct sk_buff *skb, int i,
        skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
        /*
-        * Propagate page->pfmemalloc to the skb if we can. The problem is
-        * that not all callers have unique ownership of the page. If
-        * pfmemalloc is set, we check the mapping as a mapping implies
-        * page->index is set (index and pfmemalloc share space).
-        * If it's a valid mapping, we cannot use page->pfmemalloc but we
-        * do not lose pfmemalloc information as the pages would not be
-        * allocated using __GFP_MEMALLOC.
+        * Propagate page pfmemalloc to the skb if we can. The problem is
+        * that not all callers have unique ownership of the page but rely
+        * on page_is_pfmemalloc doing the right thing(tm).
         */
        frag->page.p              = page;
        frag->page_offset         = off;
        skb_frag_size_set(frag, size);
 
        page = compound_head(page);
-       if (page->pfmemalloc && !page->mapping)
+       if (page_is_pfmemalloc(page))
                skb->pfmemalloc = true;
 }
 
@@ -2257,7 +2253,7 @@ static inline struct page *dev_alloc_page(void)
 static inline void skb_propagate_pfmemalloc(struct page *page,
                                             struct sk_buff *skb)
 {
-       if (page && page->pfmemalloc)
+       if (page_is_pfmemalloc(page))
                skb->pfmemalloc = true;
 }