1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index cae65dc42bcc..22a20af4d785 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -61,6 +61,7 @@ extern struct file *shmem_file_setup(const char *name,
                                         loff_t size, unsigned long flags);
 extern int shmem_zero_setup(struct vm_area_struct *);
 extern int shmem_lock(struct file *file, int lock, struct user_struct *user);
+extern void shmem_truncate_range(struct inode *inode, loff_t start, loff_t end);
 extern int shmem_unuse(swp_entry_t entry, struct page *page);
 extern void mem_cgroup_get_shmem_target(struct inode *inode, pgoff_t pgoff,
                                         struct page **pagep, swp_entry_t *ent);