diff --git a/fs/ubifs/commit.c b/fs/ubifs/commit.c
index 4775af4..37fa7ed 100644
--- a/fs/ubifs/commit.c
+++ b/fs/ubifs/commit.c
@@ -45,6 +45,7 @@
 
 #include <linux/freezer.h>
 #include <linux/kthread.h>
+#include <linux/slab.h>
 #include "ubifs.h"
 
 /**
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 9049232..c2a68ba 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -34,6 +34,7 @@
 #include <linux/moduleparam.h>
 #include <linux/debugfs.h>
 #include <linux/math64.h>
+#include <linux/slab.h>
 
 #ifdef CONFIG_UBIFS_FS_DEBUG
 
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index e26c02a..5692cf7 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -52,6 +52,7 @@
 #include "ubifs.h"
 #include <linux/mount.h>
 #include <linux/namei.h>
+#include <linux/slab.h>
 
 static int read_block(struct inode *inode, void *addr, unsigned int block,
 		      struct ubifs_data_node *dn)
diff --git a/fs/ubifs/gc.c b/fs/ubifs/gc.c
index e5a3d8e..918d158 100644
--- a/fs/ubifs/gc.c
+++ b/fs/ubifs/gc.c
@@ -53,6 +53,7 @@
  * good, and GC takes extra care when moving them.
  */
 
+#include <linux/slab.h>
 #include <linux/pagemap.h>
 #include <linux/list_sort.h>
 #include "ubifs.h"
diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c
index e589fed..77d5cf4 100644
--- a/fs/ubifs/io.c
+++ b/fs/ubifs/io.c
@@ -51,6 +51,7 @@
  */
 
 #include <linux/crc32.h>
+#include <linux/slab.h>
 #include "ubifs.h"
 
 /**
diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
index b2792e8..ad7f67b 100644
--- a/fs/ubifs/lpt.c
+++ b/fs/ubifs/lpt.c
@@ -46,6 +46,7 @@
 #include "ubifs.h"
 #include <linux/crc16.h>
 #include <linux/math64.h>
+#include <linux/slab.h>
 
 /**
  * do_calc_lpt_geom - calculate sizes for the LPT area.
diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index 8cbfb82..13cb7a4 100644
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -26,6 +26,7 @@
  */
 
 #include <linux/crc16.h>
+#include <linux/slab.h>
 #include "ubifs.h"
 
 /**
diff --git a/fs/ubifs/recovery.c b/fs/ubifs/recovery.c
index 868a55e..109c6ea 100644
--- a/fs/ubifs/recovery.c
+++ b/fs/ubifs/recovery.c
@@ -31,6 +31,7 @@
  */
 
 #include <linux/crc32.h>
+#include <linux/slab.h>
 #include "ubifs.h"
 
 /**
diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c
index 57085e4..96cb62c 100644
--- a/fs/ubifs/sb.c
+++ b/fs/ubifs/sb.c
@@ -27,6 +27,7 @@
  */
 
 #include "ubifs.h"
+#include <linux/slab.h>
 #include <linux/random.h>
 #include <linux/math64.h>
 
diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c
index e5b1a7d..2194915 100644
--- a/fs/ubifs/tnc.c
+++ b/fs/ubifs/tnc.c
@@ -31,6 +31,7 @@
  */
 
 #include <linux/crc32.h>
+#include <linux/slab.h>
 #include "ubifs.h"
 
 /*
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index b2d9763..bd2542d 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -28,6 +28,7 @@
 #include <linux/fs.h>
 #include <linux/err.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 #include <linux/vmalloc.h>
 #include <linux/spinlock.h>
 #include <linux/mutex.h>
diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index 195830f..c74400f 100644
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -56,6 +56,7 @@
  */
 
 #include "ubifs.h"
+#include <linux/slab.h>
 #include <linux/xattr.h>
 #include <linux/posix_acl_xattr.h>