mm: allow drivers to prevent new writable mappings

[pandora-kernel.git] / include / linux / shmem_fs.h

diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index 9291ac3..6f10c9c 100644 (file)
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -48,6 +48,7 @@ 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_unlock_mapping(struct address_space *mapping);
 extern struct page *shmem_read_mapping_page_gfp(struct address_space *mapping,
                                        pgoff_t index, gfp_t gfp_mask);
 extern void shmem_truncate_range(struct inode *inode, loff_t start, loff_t end);