fs: rcu-walk for path lookup

[mirror_ubuntu-artful-kernel.git] / include / linux / namei.h

diff --git a/include/linux/namei.h b/include/linux/namei.h
index aec730b539358407847b756fcf9aaa9ed61e1fcc..18d06add0a40b91d5ab5cf7254fc7cfbb47f527f 100644 (file)
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -19,7 +19,10 @@ struct nameidata {
        struct path     path;
        struct qstr     last;
        struct path     root;
+       struct file     *file;
+       struct inode    *inode; /* path.dentry.d_inode */
        unsigned int    flags;
+       unsigned        seq;
        int             last_type;
        unsigned        depth;
        char *saved_names[MAX_NESTED_LINKS + 1];
@@ -43,11 +46,13 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND};
  *  - internal "there are more path components" flag
  *  - dentry cache is untrusted; force a real lookup
  */
-#define LOOKUP_FOLLOW           1
-#define LOOKUP_DIRECTORY        2
-#define LOOKUP_CONTINUE                 4
-#define LOOKUP_PARENT          16
-#define LOOKUP_REVAL           64
+#define LOOKUP_FOLLOW          0x0001
+#define LOOKUP_DIRECTORY       0x0002
+#define LOOKUP_CONTINUE                0x0004
+
+#define LOOKUP_PARENT          0x0010
+#define LOOKUP_REVAL           0x0020
+#define LOOKUP_RCU             0x0040
 /*
  * Intent data
  */