[libvirt] Use posix_fallocate() to allocate disk space

[Daniel P. Berrange]

On Thu, Mar 19, 2009 at 10:34:05AM +0000, Daniel P. Berrange wrote:
> On Thu, Mar 19, 2009 at 12:45:23PM +0530, Amit Shah wrote:
> > These patches introduce safezero() to allocate chunks for a file and
> > write zeroes to them.
> > 
> > Not yet ready for merge; I don't understand the configure system yet
> > and don't know how to test for posix_fallocate() availability.
> 
> In this case it'll be pretty easy, add to configure.in:
> 
>   AC_CHECK_FUNCS([posix_fallocate()])
> 
> And then in the source code you can
> 
>   #ifdef HAVE_POSIX_FALLOCATE
>    ...
>   #else
>     ...
>   #endif

Ahh, you've already done this - i missed the followup patch you sent:-)

Daniel
-- 
|: Red Hat, Engineering, London   -o-   http://people.redhat.com/berrange/ :|
|: http://libvirt.org  -o-  http://virt-manager.org  -o-  http://ovirt.org :|
|: http://autobuild.org       -o-         http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505  -o-  F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|