constify dentry_operations: JFS

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/jfs/jfs_inode.h b/fs/jfs/jfs_inode.h
index adb2faf..1eff7db 100644
--- a/fs/jfs/jfs_inode.h
+++ b/fs/jfs/jfs_inode.h
@@ -47,5 +47,5 @@
 extern const struct inode_operations jfs_file_inode_operations;
 extern const struct file_operations jfs_file_operations;
 extern const struct inode_operations jfs_symlink_inode_operations;
-extern struct dentry_operations jfs_ci_dentry_operations;
+extern const struct dentry_operations jfs_ci_dentry_operations;
 #endif				/* _H_JFS_INODE */