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From:   "NeilBrown" <neilb@suse.de>
To:     "Chuck Lever" <chuck.lever@oracle.com>
Cc:     linux-nfs@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH v3 0/3] Bulk-release pages during NFSD read splice
In-reply-to: <162575623717.2532.8517369487503961860.stgit@klimt.1015granger.net>
References: <162575623717.2532.8517369487503961860.stgit@klimt.1015granger.net>
Date:   Fri, 09 Jul 2021 09:23:10 +1000
Message-id: <162578659050.31036.16278478540386858207@noble.neil.brown.name>
Precedence: bulk

On Fri, 09 Jul 2021, Chuck Lever wrote:
> 
> In this version of the series, each nfsd thread never accrues more
> than 16 pages. We can easily make that larger or smaller, but 16
> already reduces the rate of put_pages() calls to a minute fraction
> of what it was, and does not consume much additional space in struct
> svc_rqst.
> 
> Comments welcome!

Very nice.  Does "1/16" really count as "minute"? Or did I miss
something and it is actually a smaller fraction?
Either way: excellent work.

Reviewed-by: NeilBrown <neilb@suse.de>

NeilBrown

> 
> ---
> 
> Chuck Lever (3):
>       NFSD: Clean up splice actor
>       SUNRPC: Add svc_rqst_replace_page() API
>       NFSD: Batch release pages during splice read
> 
> 
>  fs/nfsd/vfs.c              | 20 +++++---------------
>  include/linux/sunrpc/svc.h |  5 +++++
>  net/sunrpc/svc.c           | 29 +++++++++++++++++++++++++++++
>  3 files changed, 39 insertions(+), 15 deletions(-)
> 
> --
> Chuck Lever
> 
>