From: Adrian Bunk <bunk@kernel.org>

Every file should include the headers containing the prototypes for its global
functions (in this case sys_eventfd()).

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/eventfd.c |    1 +
 1 file changed, 1 insertion(+)

diff -puN fs/eventfd.c~fs-eventfdc-should-include-linux-syscallsh fs/eventfd.c
--- a/fs/eventfd.c~fs-eventfdc-should-include-linux-syscallsh
+++ a/fs/eventfd.c
@@ -15,6 +15,7 @@
 #include <linux/spinlock.h>
 #include <linux/anon_inodes.h>
 #include <linux/eventfd.h>
+#include <linux/syscalls.h>
 
 struct eventfd_ctx {
 	wait_queue_head_t wqh;
_