linux-kernel - Re: [RFC PATCH] nfs: Support posix_fadvise(POSIX_FADV

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Message-ID: <4FEA4DE7.3030606@gmail.com>
Date:	Tue, 26 Jun 2012 17:03:51 -0700
From:	Dean <seattleplus@...il.com>
To:	Namjae Jeon <linkinjeon@...il.com>
CC:	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"linux-nfs@...r.kernel.org" <linux-nfs@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Namjae Jeon <namjae.jeon@...sung.com>,
	VivekTrivedi <t.vivek@...sung.com>,
	Amit Sahrawat <a.sahrawat@...sung.com>
Subject: Re: [RFC PATCH] nfs: Support posix_fadvise(POSIX_FADV_RANDOM) on
 nfs server.

Hi Namjae,

I'm glad you also see the usefulness of sending such hints to the NFS 
server.

Beyond reviewing the  NFSv4.2 spec, it would also be very useful to 
implement a version of IO_ADVISE and show performance results with your 
traverse test (among others).  If you have time for this, that would 
really be helpful in ensuring the usefulness of IO_ADVISE.

Dean Hildebrand

On 6/24/12 6:54 PM, Namjae Jeon wrote:
> 2012/6/24, Jim Rees <rees@...ch.edu>:
>> Namjae Jeon wrote:
>>
>>    > Yes, posix_fadvise support is part of NFSv4.2.
>>    Where can I check it ?
>>    Thanks.
>>
>> NFS is standardized throught the IETF.  4.2 is not out yet, so you'll find
>> it in the drafts rather than the RFCs.  You can search them here:
>> http://www.rfc-editor.org/idsearch.html
>>
>> Here is the current draft:
>> ftp://ftp.rfc-editor.org/in-notes/internet-drafts/draft-ietf-nfsv4-minorversion2-12.txt
>>
> Okay, I will check, Thanks a lot Jim~. We hope to contribute NFSv4.2.
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