linux-kernel - Re: xen_biovec_phys_mergeable not exported

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Message-ID: <4E79D404.7000805@kernel.dk>
Date:	Wed, 21 Sep 2011 14:09:40 +0200
From:	Jens Axboe <axboe@...nel.dk>
To:	Matthew Wilcox <matthew@....cx>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: xen_biovec_phys_mergeable not exported

On 2011-09-20 22:25, Matthew Wilcox wrote:
> 
> In my NVMe driver, I call BIOVEC_PHYS_MERGEABLE().  If CONFIG_XEN
> is defined, it references xen_biovec_phys_mergeable() which is not
> EXPORT_SYMBOL.  I think BIOVEC_PHYS_MERGABLE is a perfectly kosher thing
> to be calling from a module that implements a bio-based block driver,
> so I think the right thing to do is to add an EXPORT_SYMBOL(_GPL?) to
> the Xen code when I submit the driver.
> 
> Does anyone have a different opinion on this?

Yep, lets just export it for now. Long term, that functionality will be
moving back into the block layer when we unify the queuing models.

-- 
Jens Axboe

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