Index: wp-includes/version.php
===================================================================
--- wp-includes/version.php	(revision 19563)
+++ wp-includes/version.php	(working copy)
@@ -11,7 +11,7 @@
  *
  * @global int $wp_db_version
  */
-$wp_db_version = 19470;
+$wp_db_version = 19471;
 
 /**
  * Holds the TinyMCE version
Index: wp-admin/includes/upgrade.php
===================================================================
--- wp-admin/includes/upgrade.php	(revision 19563)
+++ wp-admin/includes/upgrade.php	(working copy)
@@ -1156,6 +1156,10 @@
 		&& is_main_site() && ! defined( 'DO_NOT_UPGRADE_GLOBAL_TABLES' ) )
 			delete_metadata( 'user', 0, 'dismissed_wp_pointers', '', true );
 
+	if ( $wp_current_db_version < 19471 ) {
+		$wpdb->query("ALTER TABLE $wpdb->posts CHANGE post_content_filtered post_content_filtered LONGTEXT NOT NULL");
+	}
+
 	if ( $wp_current_db_version >= 11548 )
 		return;
 
Index: wp-admin/includes/schema.php
===================================================================
--- wp-admin/includes/schema.php	(revision 19563)
+++ wp-admin/includes/schema.php	(working copy)
@@ -161,7 +161,7 @@
   pinged text NOT NULL,
   post_modified datetime NOT NULL default '0000-00-00 00:00:00',
   post_modified_gmt datetime NOT NULL default '0000-00-00 00:00:00',
-  post_content_filtered text NOT NULL,
+  post_content_filtered longtext NOT NULL,
   post_parent bigint(20) unsigned NOT NULL default '0',
   guid varchar(255) NOT NULL default '',
   menu_order int(11) NOT NULL default '0',