---

yaml --- r: 70934 b: refs/heads/master c: ace2e92 h: refs/heads/master v: v3
git-mirror · Oct 16, 2007 · 96d6a1a · 96d6a1a
1 parent 0e06807
commit 96d6a1a
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Showing 2 changed files with 14 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a122d6230e8d8ac7cffdf0bc9cc4b256b928fe49
+refs/heads/master: ace2e92e193126711cb3a83a3752b2c5b8396950
diff --git a/trunk/fs/xfs/linux-2.6/xfs_buf.c b/trunk/fs/xfs/linux-2.6/xfs_buf.c
@@ -187,6 +187,19 @@ free_address(
 {
 	a_list_t	*aentry;
 
+#ifdef CONFIG_XEN
+	/*
+	 * Xen needs to be able to make sure it can get an exclusive
+	 * RO mapping of pages it wants to turn into a pagetable.  If
+	 * a newly allocated page is also still being vmap()ed by xfs,
+	 * it will cause pagetable construction to fail.  This is a
+	 * quick workaround to always eagerly unmap pages so that Xen
+	 * is happy.
+	 */
+	vunmap(addr);
+	return;
+#endif
+
 	aentry = kmalloc(sizeof(a_list_t), GFP_NOWAIT);
 	if (likely(aentry)) {
 		spin_lock(&as_lock);