staging/lustre/llite: add missing include file for prefetchw

Got below errors on s390 build:
  CC [M]  drivers/staging/lustre/lustre/llite/dir.o
drivers/staging/lustre/lustre/llite/dir.c: In function 'll_dir_filler':
drivers/staging/lustre/lustre/llite/dir.c:225:3: error: implicit declaration of function 'prefetchw' [-Werror=implicit-function-declaration]

Signed-off-by: Peng Tao <[email protected]>
Signed-off-by: Andreas Dilger <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c
index 23c61fe81965c7a5036cf6bc856396584c48c59a..13a6426bdd9fc586b5f2bb4f2fb5e0a449d8c68c 100644 (file)
--- a/drivers/staging/lustre/lustre/llite/dir.c
+++ b/drivers/staging/lustre/lustre/llite/dir.c
@@ -45,6 +45,7 @@
 #include <asm/uaccess.h>
 #include <linux/buffer_head.h>   // for wait_on_buffer
 #include <linux/pagevec.h>
+#include <linux/prefetch.h>
 
 #define DEBUG_SUBSYSTEM S_LLITE