common/rc: check fs supports xfs_io falloc's specific flags

For example NFS 4.2 supports fallocate but it does not support its
KEEP_SIZE flag, so we want to skip tests that use fallocate with
that flag on filesystems that don't support it.

Suggested-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
1 file changed