[PATCH 08/10] xfstests: check O_DIRECT support before testing direct I/O

[Christoph Hellwig]

On Tue, Dec 10, 2013 at 12:11:59PM -0800, Junho Ryu wrote:
> Some filesystems do not support O_DIRECT.  Check whether TEST_DIR supports it
> by running xfs_io with and without -d flag.

should be _require_odirect as we don't really care about xfs_io features
but kernel/filesystem features.