From: Ming Lei <ming.lei@redhat.com>
To: Bart Van Assche <bvanassche@acm.org>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
Christoph Hellwig <hch@infradead.org>,
Hannes Reinecke <hare@suse.com>,
Johannes Thumshirn <jth@kernel.org>,
syzbot+d44e1b26ce5c3e77458d@syzkaller.appspotmail.com
Subject: Re: [PATCH v2 2/8] blk-mq: Keep set->nr_hw_queues and set->map[].nr_queues in sync
Date: Thu, 20 Feb 2020 18:05:24 +0800 [thread overview]
Message-ID: <20200220100524.GA31206@ming.t460p> (raw)
In-Reply-To: <20200220024441.11558-3-bvanassche@acm.org>
On Wed, Feb 19, 2020 at 06:44:35PM -0800, Bart Van Assche wrote:
> blk_mq_map_queues() and multiple .map_queues() implementations expect that
> set->map[HCTX_TYPE_DEFAULT].nr_queues is set to the number of hardware
Only single queue mapping expects set->map[HCTX_TYPE_DEFAULT].nr_queues
to be set->nr_hw_queues. For multiple mapping, set->nr_hw_queues should
be sum of each mapping's nr_queue.
Thanks,
Ming
next prev parent reply other threads:[~2020-02-20 10:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-20 2:44 [PATCH v2 0/8] Eight patches related to changing the number of hardware queues Bart Van Assche
2020-02-20 2:44 ` [PATCH v2 1/8] blk-mq: Fix a comment in include/linux/blk-mq.h Bart Van Assche
2020-02-20 2:44 ` [PATCH v2 2/8] blk-mq: Keep set->nr_hw_queues and set->map[].nr_queues in sync Bart Van Assche
2020-02-20 10:05 ` Ming Lei [this message]
2020-02-20 16:14 ` Bart Van Assche
2020-02-20 20:47 ` Ming Lei
2020-02-21 2:50 ` Bart Van Assche
2020-02-20 2:44 ` [PATCH v2 3/8] blk-mq: Fix a recently introduced regression in blk_mq_realloc_hw_ctxs() Bart Van Assche
2020-02-20 2:44 ` [PATCH v2 4/8] null_blk: Suppress an UBSAN complaint triggered when setting 'memory_backed' Bart Van Assche
2020-02-20 2:44 ` [PATCH v2 5/8] null_blk: Fix changing the number of hardware queues Bart Van Assche
2020-02-20 2:44 ` [PATCH v2 6/8] null_blk: Fix the null_add_dev() error path Bart Van Assche
2020-02-20 2:44 ` [PATCH v2 7/8] null_blk: Handle null_add_dev() failures properly Bart Van Assche
2020-02-20 2:44 ` [PATCH v2 8/8] null_blk: Add support for init_hctx() fault injection Bart Van Assche
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