From 480cdd9f815d1d78caf98f22ed94ef4f58e46d0c Mon Sep 17 00:00:00 2001
From: Christopher Haster <chaster@utexas.edu>
Date: Sat, 14 Nov 2020 09:32:34 -0600
Subject: [PATCH] Fixed incorrect modulus in lfs_alloc_reset

Modulus of the offset by block_size was clearly a typo, and should be
block_count. Interesting to note that later moduluses during alloc
calculations prevents this from breaking anything, but as gtaska notes it
could skew the wear-leveling distribution.

Found by guiserle and gtaska
---
 lfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lfs.c b/lfs.c
index eb832fa..7f99ccb 100644
--- a/lfs.c
+++ b/lfs.c
@@ -459,7 +459,7 @@ static void lfs_alloc_ack(lfs_t *lfs) {
 // Invalidate the lookahead buffer. This is done during mounting and
 // failed traversals
 static void lfs_alloc_reset(lfs_t *lfs) {
-    lfs->free.off = lfs->seed % lfs->cfg->block_size;
+    lfs->free.off = lfs->seed % lfs->cfg->block_count;
     lfs->free.size = 0;
     lfs->free.i = 0;
     lfs_alloc_ack(lfs);