I disabled the CONFIG_MMU and tried to compile the kernel and got the
following problem:
In function ‘shmem_file_setup’:
error: implicit declaration of function ‘ramfs_nommu_expand_for_mapping’
This is because, we do not include ramfs.h for CONFIG_SHMEM.
Included linux/ramfs.h for both CONFIG_SHMEM as well as !CONFIG_SHMEM.
Signed-off-by: Kautuk Consul <consul.kautuk@xxxxxxxxx>
---
mm/shmem.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/mm/shmem.c b/mm/shmem.c
index 269d049..4884188 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -30,6 +30,7 @@
#include <linux/mm.h>
#include <linux/export.h>
#include <linux/swap.h>
+#include <linux/ramfs.h>
static struct vfsmount *shm_mnt;
@@ -2442,8 +2443,6 @@ out4:
* effectively equivalent, but much lighter weight.
*/
-#include <linux/ramfs.h>
-
static struct file_system_type shmem_fs_type = {
.name = "tmpfs",
.mount = ramfs_mount,
--
1.7.5.4
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