Re: [Qemu-devel] [PATCH v1 0/1] Allow the building of VirtFS to be disabled

["Daniel P. Berrange" <berrange@redhat.com>]

On Wed, Feb 08, 2012 at 01:45:15PM +0530, Aneesh Kumar K.V wrote:
> On Tue, 7 Feb 2012 14:44:05 -0600, Meador Inge <meadori@codesourcery.com> wrote:
> > There have been reports [1, 2] where folks have had issues building
> > VirtFS and the virtio backend on older systems.  I personally saw
> > problems due to the use of features (struct statfs f_frsize field,
> > fdopendir, O_NOATIME) in this code that are not available on much older
> > Linux systems.  Given, the system I ran into this on is ancient (RH8 sysroot),
> > but I still need to build QEMU on it nonetheless.

[snip]

> I like the patch because it help to get qemu build on platforms where
> the build failures are only due to virtfs. VirtFS do depend on some of
> the recent linux APIs, so sometime we do break build on old Linux
> distros.

Allowing build to be disabled is a fine goal in itself. I think someone
should still fix the code to be more portable though. f_frsize is a
non-standardized field in 'struct stat', so its usage should be made
conditional.

Regards,
Daniel
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