linux-kernel - Re: [PATCH 0/6] rds: rdma: Add ability to force GFP

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Date: Tue, 14 May 2024 18:32:46 +0000
From: Haakon Bugge <haakon.bugge@...cle.com>
To: Zhu Yanjun <zyjzyj2000@...il.com>
CC: OFED mailing list <linux-rdma@...r.kernel.org>,
        open list
	<linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        "rds-devel@....oracle.com" <rds-devel@....oracle.com>,
        Jason Gunthorpe
	<jgg@...pe.ca>, Leon Romanovsky <leon@...nel.org>,
        Saeed Mahameed
	<saeedm@...dia.com>, Tariq Toukan <tariqt@...dia.com>,
        "David S . Miller"
	<davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
	<kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Tejun Heo
	<tj@...nel.org>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Allison Henderson
	<allison.henderson@...cle.com>,
        Manjunath Patil
	<manjunath.b.patil@...cle.com>,
        Mark Zhang <markzhang@...dia.com>,
        Chuck
 Lever III <chuck.lever@...cle.com>,
        Shiraz Saleem <shiraz.saleem@...el.com>,
        Yang Li <yang.lee@...ux.alibaba.com>
Subject: Re: [PATCH 0/6] rds: rdma: Add ability to force GFP_NOIO

Hi Yanjun,


> On 14 May 2024, at 14:02, Zhu Yanjun <zyjzyj2000@...il.com> wrote:
> 
> 
> 
> On 14.05.24 10:53, Zhu Yanjun wrote:
>> On 13.05.24 14:53, Håkon Bugge wrote:
>>> This series enables RDS and the RDMA stack to be used as a block I/O
>>> device. This to support a filesystem on top of a raw block device
>> This is to support a filesystem ... ?
> 
> Sorry. my bad. I mean, normally rds is used to act as a communication protocol between Oracle databases. Now in this patch series, it seems that rds acts as a communication protocol to support a filesystem. So I am curious which filesystem that rds is supporting?

The peer here is a file-server which acts a block device. What Oracle calls a cell-server. The initiator here, is actually using XFS over an Oracle in-kernel pseudo-volume block device.


Thxs,  Håkon