xfs_scrub: classify lack of ioctl support as a runtime error

If the kernel doesn't have the SCRUB_METADATA ioctl that's a runtime
error, not a fs error.  Account it as such.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

diff --git a/scrub/phase1.c b/scrub/phase1.c
index af93d0f..82c8022 100644
--- a/scrub/phase1.c
+++ b/scrub/phase1.c
@@ -174,14 +174,14 @@
 	    !xfs_can_scrub_bmap(ctx) || !xfs_can_scrub_dir(ctx) ||
 	    !xfs_can_scrub_attr(ctx) || !xfs_can_scrub_symlink(ctx) ||
 	    !xfs_can_scrub_parent(ctx)) {
-		str_error(ctx, ctx->mntpoint,
+		str_info(ctx, ctx->mntpoint,
 _("Kernel metadata scrubbing facility is not available."));
 		return false;
 	}
 
 	/* Do we need kernel-assisted metadata repair? */
 	if (ctx->mode != SCRUB_MODE_DRY_RUN && !xfs_can_repair(ctx)) {
-		str_error(ctx, ctx->mntpoint,
+		str_info(ctx, ctx->mntpoint,
 _("Kernel metadata repair facility is not available.  Use -n to scrub."));
 		return false;
 	}