[CIFS] Respect umask when using POSIX mkdir

When making a directory with POSIX mkdir calls, cifs_mkdir does not
respect the umask.  This patch causes the new POSIX mkdir to create with
the right mode

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 66436f5..e800c0e 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -919,6 +919,7 @@
 			goto mkdir_out;
 		}
 
+		mode &= ~current->fs->umask;
 		rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT,
 				mode, NULL /* netfid */, pInfo, &oplock,
 				full_path, cifs_sb->local_nls,