[PATCH 2/2 V2] xfs_io: configure tests for preadv/pwritev & sync_file_range

[Dave Chinner]

On Tue, Oct 09, 2012 at 10:40:11PM -0500, Eric Sandeen wrote:
> On older systems we may not have preadv/pwritev and/or
> sync_file_range.
> 
> Add the configure magic, and stub out the code
> where needed.
> 
> (sync_file_range just needed a better test; preadv/pwritev
> took a little more rearranging)
> 
> And fix a couple typos ("numberic") while we're at it.
> 
> Signed-off-by: Eric Sandeen <sandeen at redhat.com>
> ---
> 
> V2: add -DHAVE_PWRITEV and use that test in io/pwrite.c
> rather than HAVE_PREADV
.....

> +# Also implies PWRITEV
> +ifeq ($(HAVE_PREADV),yes)
> +LCFLAGS += -DHAVE_PREADV -DHAVE_PWRITEV
> +endif

Nice solution ;)

Reviewed-by: Dave Chinner <dchinner at redhat.com>

-- 
Dave Chinner
david at fromorbit.com