From: Christoph Hellwig <hch@infradead.org>
To: Chuck Lever <chuck.lever@oracle.com>
Cc: Steve Wise <swise@opengridcomputing.com>,
linux-rdma@vger.kernel.org,
Linux NFS Mailing List <linux-nfs@vger.kernel.org>
Subject: Re: [PATCH v1 05/18] xprtrdma: Avoid using Write list for small NFS READ requests
Date: Tue, 12 Apr 2016 07:15:33 -0700 [thread overview]
Message-ID: <20160412141533.GA16218@infradead.org> (raw)
In-Reply-To: <65CBC59F-3005-44FE-8C70-9DDBC8507C9E@oracle.com>
On Mon, Apr 11, 2016 at 04:38:44PM -0400, Chuck Lever wrote:
> No, pre-4.2 Linux servers have a bug that can be fixed by
> applying the above commit, which shouldn't be difficult to
> backport.
>
> Clients have always been allowed to send NFS READ this way.
But the clients might be out in a the wild. I think we'll need at
least a mount option to work around them.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
To: Chuck Lever <chuck.lever-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Cc: Steve Wise
<swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Linux NFS Mailing List
<linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH v1 05/18] xprtrdma: Avoid using Write list for small NFS READ requests
Date: Tue, 12 Apr 2016 07:15:33 -0700 [thread overview]
Message-ID: <20160412141533.GA16218@infradead.org> (raw)
In-Reply-To: <65CBC59F-3005-44FE-8C70-9DDBC8507C9E-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
On Mon, Apr 11, 2016 at 04:38:44PM -0400, Chuck Lever wrote:
> No, pre-4.2 Linux servers have a bug that can be fixed by
> applying the above commit, which shouldn't be difficult to
> backport.
>
> Clients have always been allowed to send NFS READ this way.
But the clients might be out in a the wild. I think we'll need at
least a mount option to work around them.
--
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next prev parent reply other threads:[~2016-04-12 14:15 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-11 20:10 [PATCH v1 00/18] NFS/RDMA client patches for 4.7 Chuck Lever
2016-04-11 20:10 ` Chuck Lever
2016-04-11 20:10 ` [PATCH v1 01/18] sunrpc: Advertise maximum backchannel payload size Chuck Lever
2016-04-11 20:10 ` Chuck Lever
2016-04-11 20:10 ` [PATCH v1 02/18] xprtrdma: Bound the inline threshold values Chuck Lever
2016-04-11 20:10 ` Chuck Lever
2016-04-12 18:04 ` Anna Schumaker
2016-04-12 18:04 ` Anna Schumaker
2016-04-12 19:12 ` Chuck Lever
2016-04-12 19:12 ` Chuck Lever
2016-04-11 20:10 ` [PATCH v1 03/18] xprtrdma: Limit number of RDMA segments in RPC-over-RDMA headers Chuck Lever
2016-04-11 20:10 ` Chuck Lever
2016-04-11 20:10 ` [PATCH v1 04/18] xprtrdma: Prevent inline overflow Chuck Lever
2016-04-11 20:10 ` Chuck Lever
2016-04-11 20:10 ` [PATCH v1 05/18] xprtrdma: Avoid using Write list for small NFS READ requests Chuck Lever
2016-04-11 20:10 ` Chuck Lever
2016-04-11 20:35 ` Steve Wise
2016-04-11 20:35 ` Steve Wise
2016-04-11 20:38 ` Chuck Lever
2016-04-11 20:38 ` Chuck Lever
2016-04-12 14:15 ` Christoph Hellwig [this message]
2016-04-12 14:15 ` Christoph Hellwig
2016-04-12 14:49 ` Chuck Lever
2016-04-12 14:49 ` Chuck Lever
2016-04-12 17:01 ` Christoph Hellwig
2016-04-12 17:01 ` Christoph Hellwig
2016-04-12 18:08 ` Chuck Lever
2016-04-12 18:08 ` Chuck Lever
2016-04-11 20:10 ` [PATCH v1 06/18] xprtrdma: Update comments in rpcrdma_marshal_req() Chuck Lever
2016-04-11 20:10 ` Chuck Lever
2016-04-11 20:11 ` [PATCH v1 07/18] xprtrdma: Allow Read list and Reply chunk simultaneously Chuck Lever
2016-04-11 20:11 ` Chuck Lever
2016-04-11 20:11 ` [PATCH v1 08/18] xprtrdma: Remove rpcrdma_create_chunks() Chuck Lever
2016-04-11 20:11 ` Chuck Lever
2016-04-11 20:11 ` [PATCH v1 09/18] xprtrdma: Use core ib_drain_qp() API Chuck Lever
2016-04-11 20:11 ` Chuck Lever
2016-04-12 4:49 ` Leon Romanovsky
2016-04-12 4:49 ` Leon Romanovsky
2016-04-11 20:11 ` [PATCH v1 10/18] xprtrdma: Rename rpcrdma_frwr::sg and sg_nents Chuck Lever
2016-04-11 20:11 ` Chuck Lever
2016-04-11 20:11 ` [PATCH v1 11/18] xprtrdma: Save I/O direction in struct rpcrdma_frwr Chuck Lever
2016-04-11 20:11 ` Chuck Lever
2016-04-11 20:11 ` [PATCH v1 12/18] xprtrdma: Reset MRs in frwr_op_unmap_sync() Chuck Lever
2016-04-11 20:11 ` Chuck Lever
2016-04-11 20:11 ` [PATCH v1 00/18] NFS/RDMA client patches for 4.7 Chuck Lever
2016-04-11 20:11 ` Chuck Lever
2016-04-11 20:11 ` [PATCH v1 13/18] xprtrdma: Refactor the FRWR recovery worker Chuck Lever
2016-04-11 20:11 ` Chuck Lever
2016-04-11 20:12 ` [PATCH v1 14/18] xprtrdma: Move fr_xprt and fr_worker to struct rpcrdma_mw Chuck Lever
2016-04-11 20:12 ` Chuck Lever
2016-04-11 20:12 ` [PATCH v1 15/18] xprtrdma: Refactor __fmr_dma_unmap() Chuck Lever
2016-04-11 20:12 ` Chuck Lever
2016-04-11 20:12 ` [PATCH v1 16/18] xprtrdma: Add ro_unmap_safe memreg method Chuck Lever
2016-04-11 20:12 ` Chuck Lever
2016-04-11 20:12 ` [PATCH v1 17/18] xprtrdma: Remove ro_unmap() from all registration modes Chuck Lever
2016-04-11 20:12 ` Chuck Lever
2016-04-11 20:12 ` [PATCH v1 18/18] xprtrdma: Faster server reboot recovery Chuck Lever
2016-04-11 20:12 ` Chuck Lever
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