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-rw-r--r--include/linux/skbuff.h61
1 files changed, 33 insertions, 28 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 103fbe8113f8..73c370e615de 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2185,46 +2185,51 @@ static inline struct sk_buff *netdev_alloc_skb_ip_align(struct net_device *dev,
}
/**
- * __skb_alloc_pages - allocate pages for ps-rx on a skb and preserve pfmemalloc data
- * @gfp_mask: alloc_pages_node mask. Set __GFP_NOMEMALLOC if not for network packet RX
- * @skb: skb to set pfmemalloc on if __GFP_MEMALLOC is used
- * @order: size of the allocation
+ * __dev_alloc_pages - allocate page for network Rx
+ * @gfp_mask: allocation priority. Set __GFP_NOMEMALLOC if not for network Rx
+ * @order: size of the allocation
*
- * Allocate a new page.
+ * Allocate a new page.
*
- * %NULL is returned if there is no free memory.
+ * %NULL is returned if there is no free memory.
*/
-static inline struct page *__skb_alloc_pages(gfp_t gfp_mask,
- struct sk_buff *skb,
- unsigned int order)
-{
- struct page *page;
-
- gfp_mask |= __GFP_COLD;
-
- if (!(gfp_mask & __GFP_NOMEMALLOC))
- gfp_mask |= __GFP_MEMALLOC;
+static inline struct page *__dev_alloc_pages(gfp_t gfp_mask,
+ unsigned int order)
+{
+ /* This piece of code contains several assumptions.
+ * 1. This is for device Rx, therefor a cold page is preferred.
+ * 2. The expectation is the user wants a compound page.
+ * 3. If requesting a order 0 page it will not be compound
+ * due to the check to see if order has a value in prep_new_page
+ * 4. __GFP_MEMALLOC is ignored if __GFP_NOMEMALLOC is set due to
+ * code in gfp_to_alloc_flags that should be enforcing this.
+ */
+ gfp_mask |= __GFP_COLD | __GFP_COMP | __GFP_MEMALLOC;
- page = alloc_pages_node(NUMA_NO_NODE, gfp_mask, order);
- if (skb && page && page->pfmemalloc)
- skb->pfmemalloc = true;
+ return alloc_pages_node(NUMA_NO_NODE, gfp_mask, order);
+}
- return page;
+static inline struct page *dev_alloc_pages(unsigned int order)
+{
+ return __dev_alloc_pages(GFP_ATOMIC, order);
}
/**
- * __skb_alloc_page - allocate a page for ps-rx for a given skb and preserve pfmemalloc data
- * @gfp_mask: alloc_pages_node mask. Set __GFP_NOMEMALLOC if not for network packet RX
- * @skb: skb to set pfmemalloc on if __GFP_MEMALLOC is used
+ * __dev_alloc_page - allocate a page for network Rx
+ * @gfp_mask: allocation priority. Set __GFP_NOMEMALLOC if not for network Rx
*
- * Allocate a new page.
+ * Allocate a new page.
*
- * %NULL is returned if there is no free memory.
+ * %NULL is returned if there is no free memory.
*/
-static inline struct page *__skb_alloc_page(gfp_t gfp_mask,
- struct sk_buff *skb)
+static inline struct page *__dev_alloc_page(gfp_t gfp_mask)
+{
+ return __dev_alloc_pages(gfp_mask, 0);
+}
+
+static inline struct page *dev_alloc_page(void)
{
- return __skb_alloc_pages(gfp_mask, skb, 0);
+ return __dev_alloc_page(GFP_ATOMIC);
}
/**