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Re: [libvirt] [Qemu-devel] QEMU fstatfs(2) and libvirt SELinux policy



On Fri, Mar 09, 2012 at 04:07:43PM +0000, Stefan Hajnoczi wrote:
> Paolo, your discard improvements in QEMU add FALLOC_FL_PUNCH_HOLE
> support.  XFS supports this fallocate() flag in current kernels,
> thereby making the XFS-specific support obsolete.
> 
> I'm wondering whether it's worth expanding the SELinux policy if we
> will have no fstatfs(2) callers in QEMU.  Are you planning to drop the
> XFS code?

FALLOC_FL_PUNCH_HOLE is a very recent feature, while the ioctl has been
around for more than 10 years.  Using FALLOC_FL_PUNCH_HOLE by default
is fine, so systems that have selinux and support it will still work.


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