linux-kernel - [PATCH 0/2] blk-mq: two fixes about updating hw queues

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Message-Id: <1538044984-2147-1-git-send-email-jianchao.w.wang@oracle.com>
Date:   Thu, 27 Sep 2018 18:43:02 +0800
From:   Jianchao Wang <jianchao.w.wang@...cle.com>
To:     axboe@...nel.dk
Cc:     keith.busch@...ux.intel.com, ming.lei@...hat.com,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] blk-mq: two fixes about updating hw queues

Hi Jens

This patch set fixes two defects during update hw queues.

1st patch refactor the blk-mq debugfs and sysfs register during
blk_mq_update_nr_hw_queues.

2nd patch should be able to fix the panic reported in follwing link
https://marc.info/?l=linux-block&m=153799465603723&w=2

Jianchao Wang (2)
blk-mq: adjust debugfs and sysfs register when updating nr_hw_queues
blk-mq: fallback to previous nr_hw_queues when updating fails

block/blk-mq.c | 79 ++++++++++++++++++++++++++++++++++------------------------
1 file changed, 47 insertions(+), 32 deletions(-)

Thanks
Jianchao