diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 596fc86..a069e7b 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -92,6 +92,9 @@
 extern __le64 cnvrtDosCifsTm(__u16 date, __u16 time);
 extern struct timespec cnvrtDosUnixTm(__u16 date, __u16 time);
 
+extern int cifs_posix_open(char *full_path, struct inode **pinode,
+			   struct super_block *sb, int mode, int oflags,
+			   int *poplock, __u16 *pnetfid, int xid);
 extern void posix_fill_in_inode(struct inode *tmp_inode,
 				FILE_UNIX_BASIC_INFO *pData, int isNewInode);
 extern struct inode *cifs_new_inode(struct super_block *sb, __u64 *inum);