From: Christoph Hellwig <hch@infradead.org>
To: longli@microsoft.com
Cc: Steve French <sfrench@samba.org>,
linux-cifs@vger.kernel.org, samba-technical@lists.samba.org,
linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org
Subject: Re: [RFC PATCH 09/09] Introduce cache=rdma moutning option
Date: Fri, 18 May 2018 00:26:31 -0700 [thread overview]
Message-ID: <20180518072631.GA19250@infradead.org> (raw)
In-Reply-To: <20180518002214.5657-10-longli@linuxonhyperv.com>
On Thu, May 17, 2018 at 05:22:14PM -0700, Long Li wrote:
> From: Long Li <longli@microsoft.com>
>
> When cache=rdma is enabled on mount options, CIFS do not allocate internal data
> buffer pages for I/O, data is read/writen directly to user memory via RDMA.
I don't think this should be an option. For direct I/O without signing
or encryption CIFS should always use get_user_pages, with or without
RDMA.
next prev parent reply other threads:[~2018-05-18 7:26 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-18 0:22 [RFC PATCH 00/09] Implement direct user I/O interfaces for RDMA Long Li
2018-05-17 23:10 ` Tom Talpey
2018-05-18 6:03 ` Long Li
2018-05-18 6:44 ` Christoph Hellwig
2018-05-19 0:58 ` Tom Talpey
2018-05-19 0:58 ` Tom Talpey
2018-05-18 6:42 ` Christoph Hellwig
2018-05-18 0:22 ` [RFC PATCH 01/09] Introduce offset for the 1st page in data transfer structures Long Li
2018-05-18 6:37 ` Steve French
2018-05-18 0:22 ` [RFC PATCH 02/09] Change wdata alloc to support direct pages Long Li
2018-05-19 1:05 ` Tom Talpey
2018-05-18 0:22 ` [RFC PATCH 03/09] Change rdata " Long Li
2018-05-18 0:22 ` [RFC PATCH 04/09] Change function to support offset when reading pages Long Li
2018-05-18 0:22 ` [RFC PATCH 05/09] Change RDMA send to regonize page offset in the 1st page Long Li
2018-05-19 1:09 ` Tom Talpey
2018-05-19 5:54 ` Long Li
2018-05-18 0:22 ` [RFC PATCH 06/09] Change RDMA recv to support " Long Li
2018-05-18 0:22 ` [RFC PATCH 07/09] Support page offset in memory regsitrations Long Li
2018-05-18 0:22 ` [RFC PATCH 08/09] Implement direct file I/O interfaces Long Li
2018-05-18 0:22 ` [RFC PATCH 09/09] Introduce cache=rdma moutning option Long Li
2018-05-18 7:26 ` Christoph Hellwig [this message]
2018-05-18 19:00 ` Long Li
2018-05-18 20:44 ` Steve French
2018-05-18 20:58 ` Long Li
2018-05-19 1:20 ` Tom Talpey
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