[mandatory]
The witch is dead! Well, 2/3 of it, anyway. ->d_revalidate() and
->lookup() do *not* take struct nameidata anymore; just the flags.
+--
+[mandatory]
+ ->create() doesn't take struct nameidata *; unlike the previous
+two, it gets "is it an O_EXCL or equivalent?" boolean argument. Note that
+local filesystems can ignore tha argument - they are guaranteed that the
+object doesn't exist. It's remote/distributed ones that might care...