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xen-devel
Re: [Xen-devel] [Patch] Always call blkdev_put when destroying a vbd in
On Sat, 28 Aug 2004, Christian Limpach wrote:
> On Fri, Aug 27, 2004 at 04:36:22PM -0700, Michael Vrable wrote:
> > The code for the block backend device in XenoLinux 2.6.8.1 doesn't call
> > blkdev_put on all code paths that can destroy a vbd. Previously,
> > blkdev_put was only called from vbd_shrink. I've added the call to
> > vbd_destroy and destroy_all_vbds.
> >
> > With the old code, the kernel running in domain-0 would believe the
> > devices exported to another domain to still be in use, even after the
> > other domain was shutdown. (This was obvious when using LVM, since the
> > logical volumes were still listed as open, and a warning message was
> > printed when shutting down LVM.) This patch should fix that.
>
> Thanks. I've applied the patch.
That patch is a bit ugly. Version checks scattered thruout the code is not
something Linus likes.
Better to make a macro that expands to nothing when not needed, and place it
in a header file.
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