linux-kernel - [PATCH -next 0/4] block/rq_qos: protect rq

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Message-Id: <20230104085354.2343590-1-yukuai1@huaweicloud.com>
Date:   Wed,  4 Jan 2023 16:53:50 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     tj@...nel.org, hch@...radead.org, josef@...icpanda.com,
        axboe@...nel.dk
Cc:     cgroups@...r.kernel.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, yukuai3@...wei.com,
        yukuai1@...weicloud.com, yi.zhang@...wei.com, yangerkun@...wei.com
Subject: [PATCH -next 0/4] block/rq_qos: protect rq_qos apis with global mutex

From: Yu Kuai <yukuai3@...wei.com>

This patchset is a new version, use a different solution suggested by
Tejun in [1].

[1] https://lore.kernel.org/all/Y6DP3aOSad8+D1yY@slm.duckdns.org/

Yu Kuai (4):
  block/rq_qos: move implementions of init/exit rq-qos apis to
    blk-rq-qos.c
  block/rq_qos: factor out a helper to add rq_qos and activate policy
  block/rq_qos: use a global mutex to protect rq_qos apis
  block/rq_qos: fail rq_qos_add() after rq_qos_exit()

 block/blk-iocost.c    |  14 +----
 block/blk-iolatency.c |   7 +--
 block/blk-rq-qos.c    | 118 ++++++++++++++++++++++++++++++++++++++++--
 block/blk-rq-qos.h    |  69 +++---------------------
 4 files changed, 125 insertions(+), 83 deletions(-)

-- 
2.31.1