d_genocide(): move the extern into fs/internal.h

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/internal.h

@@ -219,6 +219,7 @@ extern void shrink_dcache_for_umount(struct super_block *);
 extern struct dentry *__d_lookup(const struct dentry *, const struct qstr *);
 extern struct dentry *__d_lookup_rcu(const struct dentry *parent,
 				const struct qstr *name, unsigned *seq);
+extern void d_genocide(struct dentry *);
 
 /*
  * pipe.c

include/linux/dcache.h

@@ -243,9 +243,6 @@ extern void d_invalidate(struct dentry *);
 /* only used at mount-time */
 extern struct dentry * d_make_root(struct inode *);
 
-/* <clickety>-<click> the ramfs-type tree */
-extern void d_genocide(struct dentry *);
-
 extern void d_mark_tmpfile(struct file *, struct inode *);
 extern void d_tmpfile(struct file *, struct inode *);