[PATCH 7/8] xfs_scrub: fix phase 8 debug reporting

["Darrick J. Wong" <djwong@kernel.org>]

From: Darrick J. Wong <djwong@kernel.org>

Codex observes that the debug printf in fstrim_compute_minlen always
prints a threshold of 0 because we never actually set the block
threshold variable.  Fix that by using the results of the
multiplication that's passed into minlen_for_threshold.

Cc: <linux-xfs@vger.kernel.org> # v6.10.0
Fixes: 34bed605490f93 ("xfs_scrub: tune fstrim minlen parameter based on free space histograms")
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
---
 scrub/phase8.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)


diff --git a/scrub/phase8.c b/scrub/phase8.c
index 5bfe0ffb4868a2..61f412f7139ae9 100644
--- a/scrub/phase8.c
+++ b/scrub/phase8.c
@@ -141,7 +141,6 @@ fstrim_compute_minlen(
 	const struct histogram	*freesp_hist)
 {
 	uint64_t		ret;
-	double			blk_threshold = 0;
 	unsigned int		ag_max_usable;
 
 	/*
@@ -164,9 +163,9 @@ fstrim_compute_minlen(
 			freesp_hist->tot_sum * ctx->fstrim_block_pct);
 
 	if (debug > 1)
-		printf(_("fstrim minlen %lld threshold %lld ag_max_usable %u\n"),
+		printf(_("fstrim minlen %lld threshold %.2f ag_max_usable %u\n"),
 				(unsigned long long)ret,
-				(unsigned long long)blk_threshold,
+				freesp_hist->tot_sum * ctx->fstrim_block_pct,
 				ag_max_usable);
 	if (ret > ag_max_usable)
 		ret = ag_max_usable;