kernel/relay.c: move FIX_SIZE macro into relay.c

It's better to place FIX_SIZE macro in relay.c, instead of relay.h
Signed-off-by: Nzhangwei(Jovi) <jovi.zhangwei@huawei.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

include/linux/relay.h

@@ -20,9 +20,6 @@
 #include <linux/poll.h>
 #include <linux/kref.h>
 
-/* Needs a _much_ better name... */
-#define FIX_SIZE(x) ((((x) - 1) & PAGE_MASK) + PAGE_SIZE)
-
 /*
  * Tracks changes to rchan/rchan_buf structs
  */

kernel/relay.c

@@ -550,6 +550,9 @@ static int __cpuinit relay_hotcpu_callback(struct notifier_block *nb,
 	return NOTIFY_OK;
 }
 
+/* Needs a _much_ better name... */
+#define FIX_SIZE(x) ((((x) - 1) & PAGE_MASK) + PAGE_SIZE)
+
 /**
  *	relay_open - create a new relay channel
  *	@base_filename: base name of files to create, %NULL for buffering only