[PATCH] use new steal_locks helper

From: Chris Wright <chrisw@osdl.org>

Use the new steal_locks helper to steal the locks from the old files struct
left from unshare_files() when the new unshared struct files gets used.

fs/binfmt_elf.c

@@ -645,6 +645,7 @@ static int load_elf_binary(struct linux_binprm * bprm, struct pt_regs * regs)
 
 	/* Discard our unneeded old files struct */
 	if (files) {
+		steal_locks(files);
 		put_files_struct(files);
 		files = NULL;
 	}

fs/exec.c

@@ -808,6 +808,7 @@ int flush_old_exec(struct linux_binprm * bprm)
 	bprm->mm = NULL;		/* We're using it now */
 
 	/* This is the point of no return */
+	steal_locks(files);
 	put_files_struct(files);
 
 	current->sas_ss_sp = current->sas_ss_size = 0;