---

yaml --- r: 215774 b: refs/heads/master c: 45888a0 h: refs/heads/master v: v3
git-mirror · Oct 24, 2010 · cf0aa80 · cf0aa80
1 parent 09f8de0
commit cf0aa80
Show file tree

Hide file tree

Showing 2 changed files with 14 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f392eb2546170e539668a5ab8df6c1254d15a201
+refs/heads/master: 45888a0c6edc305495b6bd72a30e66bc40b324c6
diff --git a/trunk/mm/util.c b/trunk/mm/util.c
@@ -245,6 +245,19 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 }
 #endif
 
+/*
+ * Like get_user_pages_fast() except its IRQ-safe in that it won't fall
+ * back to the regular GUP.
+ * If the architecture not support this fucntion, simply return with no
+ * page pinned
+ */
+int __attribute__((weak)) __get_user_pages_fast(unsigned long start,
+				 int nr_pages, int write, struct page **pages)
+{
+	return 0;
+}
+EXPORT_SYMBOL_GPL(__get_user_pages_fast);
+
 /**
  * get_user_pages_fast() - pin user pages in memory
  * @start:	starting user address