linux-kernel - Re: [PATCH] Add iSCSI IBFT Support (v0.3)

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Message-ID: <20071127190919.GA10686@kroah.com>
Date:	Tue, 27 Nov 2007 11:09:19 -0800
From:	Greg KH <greg@...ah.com>
To:	darnok@....org
Cc:	linux-kernel@...r.kernel.org, pjones@...hat.com,
	konradr@...hat.com, konradr@...ux.vnet.ibm.com,
	randy.dunlap@...cle.com, hpa@...or.com, lenb@...nel.org,
	mike.anderson@...ibm.com, dwm@...tin.ibm.com
Subject: Re: [PATCH] Add iSCSI IBFT Support (v0.3)

On Tue, Nov 27, 2007 at 02:09:50PM -0400, darnok@....org wrote:
> On Mon, Nov 26, 2007 at 09:29:55PM -0800, Greg KH wrote:
> > On Mon, Nov 26, 2007 at 11:23:31PM -0500, Konrad Rzeszutek wrote:
> > > On Monday 26 November 2007 22:31:38 Greg KH wrote:
> > > > > +#if defined(CONFIG_ISCSI_IBFT) || defined(CONFIG_ISCSI_IBFT_MODULE)
> > > ..snip..
> > > > > +static ssize_t find_ibft(void)
> > > > > +{
> > > ..snip..
> > > > > +}
> > > >
> > > > What is a function (not even an inline one) doing in a .h file?
> > > 
> > > I was not sure where to put it. This function (find_ibft) is used by the 
> > > setup_[32|64].c and the iscsi_ibft.c code. Randy suggested I put in .c file, 
> > > but I am not sure exactly where? Should I make a new file in called 
> > > libs/iscsi_ibft_helper.c ?
> > 
> > Put it in your .c file and make it a global function to be called by
> > someone else if they need it.
> 
> If the kernel is built with CONFIG_ISCSI_IBFT=m, the
> setup_[32|64],c code would depend on the 'find_ibft' symbol which is
> in a module (in the iscsi_ibft.c), which is not available during
> the bootup phase and not linked to vmlinuz.

Ah, then don't allow that :)

> This isn't an issue if the module is built with CONFIG_ISCSI_IBFT=y of
> course.
> 
> Or did by 'your .c file' mean a new file in arch/x86/kernel directory?

I didn't realize an external file, outside of your changes, needed this
function.  If it does, then perhaps you need to just place it elsewhere.

thanks,

greg k-h
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