From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752008AbdINVCN (ORCPT ); Thu, 14 Sep 2017 17:02:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:46894 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751557AbdINVCL (ORCPT ); Thu, 14 Sep 2017 17:02:11 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B0859214AB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=fail smtp.mailfrom=shli@fb.com From: Shaohua Li To: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org Cc: tj@kernel.org, lizefan@huawei.com, tglx@linutronix.de, kernel-team@fb.com, axboe@kernel.dk, Shaohua Li Subject: [PATCH V3 0/4] block: make loop block device cgroup aware Date: Thu, 14 Sep 2017 14:02:03 -0700 Message-Id: X-Mailer: git-send-email 2.11.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Shaohua Li Hi, The IO dispatched to under layer disk by loop block device isn't cloned from original bio, so the IO loses cgroup information of original bio. These IO escapes from cgroup control. The patches try to address this issue. The idea is quite generic, but we currently only make it work for blkcg. Thanks, Shaohua V2->V3: - Make the API more robust pointed out by Tejun V1->V2: - Address a couple of issues pointed out by Tejun Shaohua Li (4): kthread: add a mechanism to store cgroup info blkcg: delete unused APIs block: make blkcg aware of kthread stored original cgroup info block/loop: make loop cgroup aware block/bio.c | 31 ---------------------- drivers/block/loop.c | 13 +++++++++ drivers/block/loop.h | 1 + include/linux/bio.h | 2 -- include/linux/blk-cgroup.h | 25 +++++------------- include/linux/kthread.h | 11 ++++++++ kernel/kthread.c | 66 ++++++++++++++++++++++++++++++++++++++++++++-- 7 files changed, 96 insertions(+), 53 deletions(-) -- 2.9.5