[PATCH] epoll struct epitem size reduction

From: Davide Libenzi <davidel@xmailserver.org>

As suggested by Eric Dumazet the following patch achieve a more compact
struct epitem on 64 bit archs.

fs/eventpoll.c

@@ -238,6 +238,9 @@ struct epitem {
 	/* List header used to link this structure to the eventpoll ready list */
 	struct list_head rdllink;
 
+	/* The file descriptor this item refers to */
+	int fd;
+
 	/* Number of active wait queue attached to poll operations */
 	int nwait;
 
@@ -247,9 +250,6 @@ struct epitem {
 	/* The "container" of this item */
 	struct eventpoll *ep;
 
-	/* The file descriptor this item refers to */
-	int fd;
-
 	/* The file this item refers to */
 	struct file *file;