[PATCH] kmemtrace: fix build breakage in befs

[Pekka Enberg <penberg@cs.helsinki.fi>]

From: Pekka Enberg <penberg@cs.helsinki.fi>

Impact: fix build

This patch fixes up the following build breakage caused by commit
e251ea2fa52321009940fad02238ef1c369531ae ("rcu: don't include unnecessary
headers, allow kmemtrace w/ tracepoints"):

    CC      fs/befs/debug.o
  fs/befs/debug.c: In function ‘befs_error’:
  fs/befs/debug.c:31: error: implicit declaration of function ‘kmalloc’
  fs/befs/debug.c:31: warning: initialization makes pointer from integer without a cast
  fs/befs/debug.c:42: error: implicit declaration of function ‘kfree’
  fs/befs/debug.c: In function ‘befs_warning’:
  fs/befs/debug.c:49: warning: initialization makes pointer from integer without a cast
  fs/befs/debug.c: In function ‘befs_debug’:
  fs/befs/debug.c:73: warning: assignment makes pointer from integer without a cast
  make[1]: *** [fs/befs/debug.o] Error 1
  make: *** [fs/befs/] Error 2

Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
---
 fs/befs/debug.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/fs/befs/debug.c b/fs/befs/debug.c
index b8e304a..622e737 100644
--- a/fs/befs/debug.c
+++ b/fs/befs/debug.c
@@ -17,6 +17,7 @@
 #include <linux/spinlock.h>
 #include <linux/kernel.h>
 #include <linux/fs.h>
+#include <linux/slab.h>
 
 #endif				/* __KERNEL__ */
 
-- 
1.5.4.3