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From: Wei Liu <wei.liu2@citrix.com>
To: Jonathan Davies <jonathan.davies@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	Jon Ludlam <jonathan.ludlam@citrix.com>,
	Euan Harris <euan.harris@citrix.com>,
	David Scott <dave@recoil.org>,
	xen-devel@lists.xenproject.org,
	Boris Ostrovsky <boris.ostrovsky@oracle.com>
Subject: Re: [PATCH 3/7] oxenstored: refactor request processing
Date: Wed, 30 Mar 2016 16:53:55 +0100	[thread overview]
Message-ID: <20160330155355.GJ5656@citrix.com> (raw)
In-Reply-To: <20160330154658.GF3316@citrix.com>

On Wed, Mar 30, 2016 at 04:46:58PM +0100, Jonathan Davies wrote:
[...]
> > >> Andrew's guess was close, but the wrong way around -- please could you try the
> > >> following with the older compiler?
> > >> 
> > >> let req = {Packet.tid=tid; Packet.rid=rid; Packet.ty=ty; Packet.data=data} in
> > >> 
> > >> I was using a syntactic feature of OCaml called 'field punning' which is
> > >> generally considered good practice and makes for more readable code. It looks
> > >> like this feature was introduced in OCaml 3.12.0 (dating from 2010), which is
> > >> consistent with Boris' findings.
> > >> 
> > >> What's the policy here -- is there a defined version of the OCaml compiler which
> > >> tools/ocaml needs to be able to compile with?
> > > 
> > > It is not explicitly listed in README or INSTALL. The ocaml tools
> > > maintainer (Dave in this case) is welcome to provide the minimum version
> > > required.
> > > 
> > > Meanwhile, I don't think we should break existing build without pinning
> > > down the minimum required version first, so we should fix Boris's
> > > breakage.  The fix seems simple enough anyway.
> > 
> > It looks like the fix is small and easy — I think this is good for now.
> > 
> > Let’s postpone requiring a later OCaml version until we really need a feature only present in a later version. I suspect this will happen eventually, probably when we try to add a dependency (e.g. from the Mirage world) which requires 4.02+.
> 
> OK; sounds sensible.
> 
> Since the original patch has already been committed to staging, I presume you'd
> like me to formally submit a standalone patch that fixes this issue. I will post
> it separately.
> 

Yes, a standalone patch to fix the issue is fine.

Wei.

> If I'm wrong and you'd like me to post a v2 of the whole series, let me know.
> 
> Thanks,
> Jonathan

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  reply	other threads:[~2016-03-30 15:53 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-17 17:51 [PATCH 0/7] oxenstored: improve transaction conflict handling Jonathan Davies
2016-03-17 17:51 ` [PATCH 1/7] oxenstored: refactor putting response on wire Jonathan Davies
2016-03-17 17:51 ` [PATCH 2/7] oxenstored: remove some unused parameters Jonathan Davies
2016-03-17 17:51 ` [PATCH 3/7] oxenstored: refactor request processing Jonathan Davies
2016-03-24 22:22   ` Boris Ostrovsky
2016-03-24 22:49     ` Andrew Cooper
2016-03-24 23:57       ` Boris Ostrovsky
2016-03-29  9:08         ` Jonathan Davies
2016-03-29 12:45           ` Boris Ostrovsky
2016-03-29 16:38           ` Wei Liu
2016-03-29 19:41             ` David Scott
2016-03-30 15:46               ` Jonathan Davies
2016-03-30 15:53                 ` Wei Liu [this message]
2016-03-17 17:51 ` [PATCH 4/7] oxenstored: keep track of each transaction's operations Jonathan Davies
2016-03-17 17:51 ` [PATCH 5/7] oxenstored: move functions that process simple operations Jonathan Davies
2016-03-17 17:51 ` [PATCH 6/7] oxenstored: replay transaction upon conflict Jonathan Davies
2016-03-17 17:51 ` [PATCH 7/7] oxenstored: log request and response during transaction replay Jonathan Davies
2016-03-18 14:33 ` [PATCH 0/7] oxenstored: improve transaction conflict handling Konrad Rzeszutek Wilk
2016-03-18 16:21   ` Jonathan Davies
2016-03-18 16:36   ` Wei Liu
2016-03-19 11:30     ` David Scott

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