From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from 22.17.110.36.static.bjtelecom.net ([36.110.17.22]:31790 "EHLO BJEXCAS003.didichuxing.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751595AbdJaKhj (ORCPT ); Tue, 31 Oct 2017 06:37:39 -0400 Date: Tue, 31 Oct 2017 18:37:32 +0800 From: weiping zhang To: , CC: , Subject: [PATCH v2 0/3] add error handle for bdi debugfs register Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: linux-block-owner@vger.kernel.org List-Id: linux-block@vger.kernel.org Hello, Change since V1: * remove the patch for bdi_debug_init(), because patch1 add a check for bdi_debug_root * remove bdi_put in bdi_register, this functions has two callers: caller1: mtd_bdi_init->bdi_register, bdi_put if register fail caller2: device_add_disk->bdi_register_owner->bdi_register, this call stack need more safety cleanup, so patch3 add an WARN_ON. weiping zhang (3): bdi: convert bdi_debug_register to int bdi: add error handle for bdi_debug_register block: add WARN_ON if bdi register fail block/genhd.c | 2 +- mm/backing-dev.c | 22 +++++++++++++++++++--- 2 files changed, 20 insertions(+), 4 deletions(-) -- 2.14.2