From: Tejun Heo <tj@kernel.org>
To: Christoph Hellwig <hch@lst.de>
Cc: linux-ide@vger.kernel.org
Subject: Re: command emulation fix
Date: Thu, 19 Jan 2017 15:45:34 -0500 [thread overview]
Message-ID: <20170119204534.GE25390@mtj.duckdns.org> (raw)
In-Reply-To: <20170119204135.GA6675@lst.de>
Hello,
On Thu, Jan 19, 2017 at 09:41:35PM +0100, Christoph Hellwig wrote:
> On Thu, Jan 19, 2017 at 03:36:46PM -0500, Tejun Heo wrote:
> > But do you actually expect there to be scalability issues around this
> > buffer? Its uses are extremely short and libata operations are pretty
> > strongly synchronized to begin with.
>
> Mostly for setups using JBODs with massive numbers of SATA disks.
>
> This would mostly not be ahci or a real ATA driver but libsas calling
> into libata for the translation.
Ah, understood.
Thanks for the explanation.
--
tejun
next prev parent reply other threads:[~2017-01-19 20:53 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-14 16:50 command emulation fix Christoph Hellwig
2017-01-14 16:50 ` [PATCH] libata: switch allocations for command emulation to GFP_ATOMIC Christoph Hellwig
2017-01-15 23:07 ` command emulation fix Tejun Heo
2017-01-16 15:21 ` Christoph Hellwig
2017-01-18 19:17 ` Tejun Heo
2017-01-19 14:35 ` Christoph Hellwig
2017-01-19 20:23 ` Tejun Heo
2017-01-19 20:27 ` Christoph Hellwig
2017-01-19 20:34 ` Tejun Heo
2017-01-19 20:36 ` Tejun Heo
2017-01-19 20:41 ` Christoph Hellwig
2017-01-19 20:45 ` Tejun Heo [this message]
2017-01-19 20:40 ` Christoph Hellwig
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