3 files changed, 7 insertions, 10 deletions

diff --git a/fs/Kconfig b/fs/Kconfig
index 455aa207e67e..d4bf8caad8d0 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -109,6 +109,7 @@ source "fs/sysfs/Kconfig"
 
 config TMPFS
         bool "Virtual memory file system support (former shm fs)"
+        depends on SHMEM
         help
           Tmpfs is a file system which keeps all files in virtual memory.
 
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 5409eced7aae..5946e2ff9fe8 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -702,17 +702,8 @@ extern void pagefault_out_of_memory(void);
 
 extern void show_free_areas(void);
 
-#ifdef CONFIG_SHMEM
-extern int shmem_lock(struct file *file, int lock, struct user_struct *user);
-#else
-static inline int shmem_lock(struct file *file, int lock,
-                            struct user_struct *user)
-{
-        return 0;
-}
-#endif
+int shmem_lock(struct file *file, int lock, struct user_struct *user);
 struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags);
-
 int shmem_zero_setup(struct vm_area_struct *);
 
 #ifndef CONFIG_MMU
diff --git a/mm/shmem.c b/mm/shmem.c
index 25ba75d02580..b4b56fd1e772 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2593,6 +2593,11 @@ int shmem_unuse(swp_entry_t entry, struct page *page)
         return 0;
 }
 
+int shmem_lock(struct file *file, int lock, struct user_struct *user)
+{
+        return 0;
+}
+
 #define shmem_vm_ops                            generic_file_vm_ops
 #define shmem_file_operations                   ramfs_file_operations
 #define shmem_get_inode(sb, mode, dev, flags)   ramfs_get_inode(sb, mode, dev)