From: Chao Leng <lengchao@huawei.com>
To: Ming Lei <ming.lei@redhat.com>
Cc: <linux-nvme@lists.infradead.org>, <linux-block@vger.kernel.org>,
<kbusch@kernel.org>, <axboe@fb.com>, <hch@lst.de>,
<sagi@grimberg.me>
Subject: Re: [PATCH v2 0/3] reduce quiesce time for lots of name spaces
Date: Tue, 11 Aug 2020 11:13:14 +0800 [thread overview]
Message-ID: <6dc6bb01-5bfd-bf13-f53a-1bc75a6b3991@huawei.com> (raw)
In-Reply-To: <20200810031547.GB2202641@T590>
On 2020/8/10 11:15, Ming Lei wrote:
>> About using per_cpu to replace SRCU, I suggest separate discussion.
>> Can you show the patch? This will make it easier to discuss.
> https://lore.kernel.org/linux-block/20200728134938.1505467-1-ming.lei@redhat.com/
Directly replace SRCU with percpu_ref, is not safe.
This may make quiesce queue wait extra time, in extreme scenario,
maybe wait for ever.
next prev parent reply other threads:[~2020-08-11 3:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-07 9:05 [PATCH v2 0/3] reduce quiesce time for lots of name spaces Chao Leng
2020-08-07 13:49 ` Ming Lei
2020-08-07 16:37 ` Sagi Grimberg
2020-08-10 2:17 ` Chao Leng
2020-08-10 3:15 ` Ming Lei
2020-08-11 3:13 ` Chao Leng [this message]
2020-08-11 20:53 ` Sagi Grimberg
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