From: zhangweiping@didichuxing.com (weiping zhang)
Subject: [PATCH] nvme-pci: add module parameter for io queue depth
Date: Sat, 8 Jul 2017 00:53:59 +0800 [thread overview]
Message-ID: <20170707165359.GA27636@localhost.didichuxing.com> (raw)
In-Reply-To: <20170707152948.GB14788@localhost.localdomain>
On Fri, Jul 07, 2017@11:29:48AM -0400, Keith Busch wrote:
> On Fri, Jul 07, 2017@05:05:47PM +0800, weiping zhang wrote:
> > Adjust io queue depth more easily.
> > cap = lo_hi_readq(dev->bar + NVME_REG_CAP);
> >
> > - dev->q_depth = min_t(int, NVME_CAP_MQES(cap) + 1, NVME_Q_DEPTH);
> > + dev->q_depth = min_t(int, NVME_CAP_MQES(cap) + 1, io_queue_depth);
>
> We need to be a little more careful about this field if users can write
> whatever they want. It's gotta be >= 2 or else trouble will occur.
ok, I will send patch v2, thanks all.
next prev parent reply other threads:[~2017-07-07 16:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-07 9:05 [PATCH] nvme-pci: add module parameter for io queue depth weiping zhang
2017-07-07 13:50 ` Christoph Hellwig
2017-07-07 14:56 ` Jens Axboe
2017-07-07 14:56 ` Jens Axboe
2017-07-07 15:29 ` Keith Busch
2017-07-07 16:53 ` weiping zhang [this message]
2017-07-10 5:54 ` Sagi Grimberg
2017-07-10 8:02 ` weiping zhang
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