Include proper header file for PFN_DOWN()

The recent commit (99a10a60ba9bedcf5d70ef81414d3e03816afa3f) to fix up
mmap_kmem() broke compiles because it used PFN_DOWN() without including
<linux/pfn.h>.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index a89cb52..5547337 100644 (file)
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -26,6 +26,7 @@
 #include <linux/backing-dev.h>
 #include <linux/bootmem.h>
 #include <linux/pipe_fs_i.h>
+#include <linux/pfn.h>
 
 #include <asm/uaccess.h>
 #include <asm/io.h>