Re: [RFC PATCH 27/28] sunrpc: Use sendmsg(MSG_SPLICE_PAGES) rather then sendpage

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To: Chuck Lever III <chuck.lever@xxxxxxxxxx>
Subject: Re: [RFC PATCH 27/28] sunrpc: Use sendmsg(MSG_SPLICE_PAGES) rather then sendpage
From: David Howells <dhowells@xxxxxxxxxx>
Date: Thu, 16 Mar 2023 21:21:52 +0000
Cc: dhowells@xxxxxxxxxx, Trond Myklebust <trondmy@xxxxxxxxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Eric Dumazet <edumazet@xxxxxxxxxx>, Jakub Kicinski <kuba@xxxxxxxxxx>, Paolo Abeni <pabeni@xxxxxxxxxx>, Al Viro <viro@xxxxxxxxxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, Jeffrey Layton <jlayton@xxxxxxxxxx>, Christian Brauner <brauner@xxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, "netdev@xxxxxxxxxxxxxxx" <netdev@xxxxxxxxxxxxxxx>, "linux-fsdevel@xxxxxxxxxxxxxxx" <linux-fsdevel@xxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-mm@xxxxxxxxx" <linux-mm@xxxxxxxxx>, Anna Schumaker <anna@xxxxxxxxxx>, Linux NFS Mailing List <linux-nfs@xxxxxxxxxxxxxxx>
In-reply-to: <4EDC79DC-0C32-40FD-9C35-164C7A077922@oracle.com>
Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903
References: <4EDC79DC-0C32-40FD-9C35-164C7A077922@oracle.com> <20230316152618.711970-1-dhowells@redhat.com> <20230316152618.711970-28-dhowells@redhat.com> <3DFBF27C-A62B-4AFE-87FD-3DF53FC39E8E@hammerspace.com>

Chuck Lever III <chuck.lever@xxxxxxxxxx> wrote:

> Therefore, this kind of change needs to be accompanied by both
> benchmark results and some field testing to convince me it won't
> cause harm.

Btw, what do you use to benchmark NFS performance?

David

Follow-Ups:
- Re: [RFC PATCH 27/28] sunrpc: Use sendmsg(MSG_SPLICE_PAGES) rather then sendpage
  - From: Chuck Lever III

References:
- Re: [RFC PATCH 27/28] sunrpc: Use sendmsg(MSG_SPLICE_PAGES) rather then sendpage
  - From: Chuck Lever III
- [RFC PATCH 00/28] splice, net: Replace sendpage with sendmsg(MSG_SPLICE_PAGES)
  - From: David Howells
- [RFC PATCH 27/28] sunrpc: Use sendmsg(MSG_SPLICE_PAGES) rather then sendpage
  - From: David Howells
- Re: [RFC PATCH 27/28] sunrpc: Use sendmsg(MSG_SPLICE_PAGES) rather then sendpage
  - From: Trond Myklebust

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