[O_TMPFILE] it's still short a few helpers, but infrastructure should be OK now...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 1a6bb81f..86da759 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -246,6 +246,8 @@
 /* <clickety>-<click> the ramfs-type tree */
 extern void d_genocide(struct dentry *);
 
+extern void d_tmpfile(struct dentry *, struct inode *);
+
 extern struct dentry *d_find_alias(struct inode *);
 extern void d_prune_aliases(struct inode *);
 
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 7c30e3a..dd6615f 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1580,6 +1580,7 @@
 	int (*atomic_open)(struct inode *, struct dentry *,
 			   struct file *, unsigned open_flag,
 			   umode_t create_mode, int *opened);
+	int (*tmpfile) (struct inode *, struct dentry *, umode_t);
 } ____cacheline_aligned;
 
 ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,