From: Jeff Moyer <jmoyer@redhat.com>
Date: Tue, 1 Dec 2009 21:06:36 -0500
Subject: [fs] eventfd: clean compile when CONFIG_EVENTFD=n
Message-id: <1259701600-23508-9-git-send-email-jmoyer@redhat.com>
Patchwork-id: 21619
O-Subject: [RHEL5 PATCH 08/12 v2] eventfd: clean compile when CONFIG_EVENTFD=n
Bugzilla: 493101
RH-Acked-by: Josef Bacik <josef@redhat.com>

Fixes bug 493101.

commit d2fd89962cd5de6b1fb9c1c789b56bc16f58f121
Author: Randy Dunlap <randy.dunlap@oracle.com>
Date:   Wed Jun 27 14:09:48 2007 -0700

    eventfd: clean compile when CONFIG_EVENTFD=n

    Fix gcc warning and add parameter checking when CONFIG_EVENTFD=n:

    fs/aio.c: In function 'aio_complete':
    fs/aio.c:955: warning: statement with no effect

Signed-off-by: Jeff Moyer <jmoyer@redhat.com>

diff --git a/include/linux/eventfd.h b/include/linux/eventfd.h
index 0d6ecc6..b489fc6 100644
--- a/include/linux/eventfd.h
+++ b/include/linux/eventfd.h
@@ -19,7 +19,8 @@ int eventfd_signal(struct file *file, int n);
 #else /* CONFIG_EVENTFD */
 
 #define eventfd_fget(fd) ERR_PTR(-ENOSYS)
-#define eventfd_signal(f, n) 0
+static inline int eventfd_signal(struct file *file, int n)
+{ return 0; }
 
 #endif /* CONFIG_EVENTFD */