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Message-ID: <20211202130440.1943847-1-yukuai3@huawei.com>
Date: Thu, 2 Dec 2021 21:04:38 +0800
From: Yu Kuai <yukuai3@...wei.com>
To: <hch@...radead.org>, <tj@...nel.org>, <axboe@...nel.dk>
CC: <cgroups@...r.kernel.org>, <linux-block@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <yukuai3@...wei.com>,
<yi.zhang@...wei.com>
Subject: [PATCH v4 0/2] cancel all throttled bios in del_gendisk()
If del_gendisk() is done when some io are still throttled, such io
will not be handled until the throttle is done, which is not
necessary.
Changes in v2:
- move WARN_ON_ONCE() from throtl_rb_first() to it's caller
- merge some patches into one.
Changes in v3:
- some code optimization in patch 1
- hold queue lock to cancel bios in patch 2
Changes in v4:
- delete rcu_read_lock() and rcu_read_unlock() in patch 2
Yu Kuai (2):
blk-throtl: move WARN_ON_ONCE() from throtl_rb_first() to it's caller
block: cancel all throttled bios in del_gendisk()
block/blk-throttle.c | 74 ++++++++++++++++++++++++++++++++++++++++++--
block/blk-throttle.h | 2 ++
block/genhd.c | 2 ++
3 files changed, 75 insertions(+), 3 deletions(-)
--
2.31.1
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