From: Adrian Bunk <bunk@kernel.org>

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

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

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

diff -puN fs/timerfd.c~fs-timerfdc-should-include-linux-syscallsh fs/timerfd.c
--- a/fs/timerfd.c~fs-timerfdc-should-include-linux-syscallsh
+++ a/fs/timerfd.c
@@ -20,6 +20,7 @@
 #include <linux/hrtimer.h>
 #include <linux/anon_inodes.h>
 #include <linux/timerfd.h>
+#include <linux/syscalls.h>
 
 struct timerfd_ctx {
 	struct hrtimer tmr;
_