mm: Export do_munmap

The 0-day build bot reports the following build error, seen if SDCARD_FS
is built as module.

ERROR: "do_munmap" undefined!

Fixes: 84a1b7d3d312 ("Included sdcardfs source code for kernel 3.0")
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
(cherry picked from commit de679b3bbe8b810b01929b1f27665ede5eb54f37)
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/mm/mmap.c b/mm/mmap.c
index dd78f7ec8..c7581c0d9 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2645,6 +2645,7 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
 
 	return 0;
 }
+EXPORT_SYMBOL(do_munmap);
 
 int vm_munmap(unsigned long start, size_t len)
 {