diff --git a/wp-admin/includes/ms.php b/wp-admin/includes/ms.php
index 6a858e3c61..004b9b8b06 100644
--- a/wp-admin/includes/ms.php
+++ b/wp-admin/includes/ms.php
@@ -289,38 +289,6 @@ function is_upload_space_available() {
 	return true;
 }
 
-/**
- * @since 3.0.0
- *
- * @return int of upload size limit in bytes
- */
-function upload_size_limit_filter( $size ) {
-	$fileupload_maxk = 1024 * get_site_option( 'fileupload_maxk', 1500 );
-	if ( get_site_option( 'upload_space_check_disabled' ) )
-		return min( $size, $fileupload_maxk );
-
-	return min( $size, $fileupload_maxk, get_upload_space_available() );
-}
-/**
- * Determines if there is any upload space left in the current blog's quota.
- *
- * @since 3.0.0
- *
- * @return int of upload space available in bytes
- */
-function get_upload_space_available() {
-	$space_allowed = get_space_allowed() * 1024 * 1024;
-	if ( get_site_option( 'upload_space_check_disabled' ) )
-		return $space_allowed;
-
-	$space_used = get_space_used() * 1024 * 1024;
-
-	if ( ( $space_allowed - $space_used ) <= 0 )
-		return 0;
-
-	return $space_allowed - $space_used;
-}
-
 /**
  * Check whether a blog has used its allotted upload space.
  *
@@ -348,43 +316,6 @@ function upload_is_user_over_quota( $echo = true ) {
 	}
 }
 
-/**
- * Returns the space used by the current blog.
- *
- * @since 3.5.0
- *
- * @return int Used space in megabytes
- */
-function get_space_used() {
-	// Allow for an alternative way of tracking storage space used
-	$space_used = apply_filters( 'pre_get_space_used', false );
-	if ( false === $space_used ) {
-		$upload_dir = wp_upload_dir();
-		$space_used = get_dirsize( $upload_dir['basedir'] ) / 1024 / 1024;
-	}
-
-	return $space_used;
-}
-
-/**
- * Returns the upload quota for the current blog.
- *
- * @since MU
- *
- * @return int Quota in megabytes
- */
-function get_space_allowed() {
-	$space_allowed = get_option( 'blog_upload_space' );
-
-	if ( ! is_numeric( $space_allowed ) )
-		$space_allowed = get_site_option( 'blog_upload_space' );
-
-	if ( empty( $space_allowed ) || ! is_numeric( $space_allowed ) )
-		$space_allowed = 50;
-
-	return $space_allowed;
-}
-
 /**
  * Displays the amount of disk space used by the current blog. Not used in core.
  *
diff --git a/wp-includes/ms-functions.php b/wp-includes/ms-functions.php
index 6040ba7e9c..10fc11f894 100644
--- a/wp-includes/ms-functions.php
+++ b/wp-includes/ms-functions.php
@@ -1929,3 +1929,73 @@ function wp_update_network_counts() {
 	$count = $wpdb->get_var( "SELECT COUNT(ID) as c FROM $wpdb->users WHERE spam = '0' AND deleted = '0'" );
 	update_site_option( 'user_count', $count );
 }
+
+/**
+ * Returns the space used by the current blog.
+ *
+ * @since 3.5.0
+ *
+ * @return int Used space in megabytes
+ */
+function get_space_used() {
+	// Allow for an alternative way of tracking storage space used
+	$space_used = apply_filters( 'pre_get_space_used', false );
+	if ( false === $space_used ) {
+		$upload_dir = wp_upload_dir();
+		$space_used = get_dirsize( $upload_dir['basedir'] ) / 1024 / 1024;
+	}
+
+	return $space_used;
+}
+
+/**
+ * Returns the upload quota for the current blog.
+ *
+ * @since MU
+ *
+ * @return int Quota in megabytes
+ */
+function get_space_allowed() {
+	$space_allowed = get_option( 'blog_upload_space' );
+
+	if ( ! is_numeric( $space_allowed ) )
+		$space_allowed = get_site_option( 'blog_upload_space' );
+
+	if ( empty( $space_allowed ) || ! is_numeric( $space_allowed ) )
+		$space_allowed = 50;
+
+	return $space_allowed;
+}
+
+/**
+ * Determines if there is any upload space left in the current blog's quota.
+ *
+ * @since 3.0.0
+ *
+ * @return int of upload space available in bytes
+ */
+function get_upload_space_available() {
+	$space_allowed = get_space_allowed() * 1024 * 1024;
+	if ( get_site_option( 'upload_space_check_disabled' ) )
+		return $space_allowed;
+
+	$space_used = get_space_used() * 1024 * 1024;
+
+	if ( ( $space_allowed - $space_used ) <= 0 )
+		return 0;
+
+	return $space_allowed - $space_used;
+}
+
+/**
+ * @since 3.0.0
+ *
+ * @return int of upload size limit in bytes
+ */
+function upload_size_limit_filter( $size ) {
+	$fileupload_maxk = 1024 * get_site_option( 'fileupload_maxk', 1500 );
+	if ( get_site_option( 'upload_space_check_disabled' ) )
+		return min( $size, $fileupload_maxk );
+
+	return min( $size, $fileupload_maxk, get_upload_space_available() );
+}
\ No newline at end of file