[PATCH] generic: fix check for zero range support in generic/009

[Eric Whitney]

* Dave Chinner <david at fromorbit.com>:
> On Sat, Apr 19, 2014 at 03:05:24PM -0400, Eric Whitney wrote:
> > Generic/001 fails when run on a file system that does not support byte range
> > zeroing.  For example, an EOPNOTSUPP failure occurs when the test is run
> > on a pre-3.15 extent-mapped file system.  The code in the test intended
> > to prevent this contains an apparent typo that results in a check for
> > fallocate() rather than zero range support.
> > 
> > Signed-off-by: Eric Whitney <enwlinux at gmail.com>
> > ---
> >  tests/generic/009 | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/tests/generic/009 b/tests/generic/009
> > index b7b0b3f..65abe3c 100644
> > --- a/tests/generic/009
> > +++ b/tests/generic/009
> > @@ -44,7 +44,7 @@ trap "_cleanup ; exit \$status" 0 1 2 3 15
> >  
> >  # real QA test starts here
> >  _supported_os Linux
> > -_require_xfs_io_falloc "fzero"
> > +_require_xfs_io_command "fzero"
> 
> There should be a helper in common/rc for this. i.e.
> _require_xfs_io_fzero. There's helpers for everything else. Can you
> add the helper and wire the tests up to it properly?
> 

Sure.  For naming consistency with the other related helper functions, it
looks like we'd want to call this _require_xfs_io_falloc_zero().  I'm happy
to change this if I'm mistaken.  Patches on the way.

Thanks,
Eric