From f7b11a8726eb2e25c95796596dc0a77b12caa2d2 Mon Sep 17 00:00:00 2001
From: "S.J.R. van Schaik" <stephan@whiteboxsystems.nl>
Date: Mon, 24 Jul 2017 15:03:19 +0200
Subject: [PATCH] ftl: temporarily disable reading the cached va in
 trace_path()

---
 source/ftl/map.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/source/ftl/map.c b/source/ftl/map.c
index 7296111..52de529 100644
--- a/source/ftl/map.c
+++ b/source/ftl/map.c
@@ -382,7 +382,9 @@ int trace_path(struct ftl_map *map, struct ftl_page_desc *new_page_desc,
 	uint8_t depth = 0;
 	uint32_t upage = map->root;
 
-	if ((map->flags & FTL_CACHED_VA) && map->last_va == va) {
+#if 0
+	/* FIXME */
+	if (!new_page_desc && (map->flags & FTL_CACHED_VA) && map->last_va == va) {
 		if (map->flags & FTL_UNMAPPED)
 			return -1;
 
@@ -391,6 +393,9 @@ int trace_path(struct ftl_map *map, struct ftl_page_desc *new_page_desc,
 
 		return 0;
 	}
+#endif
+
+	map->flags &= ~(FTL_CACHED_VA | FTL_UNMAPPED);
 
 	if (new_page_desc)
 		new_page_desc->va = va;
@@ -428,7 +433,6 @@ int trace_path(struct ftl_map *map, struct ftl_page_desc *new_page_desc,
 		*page = upage;
 
 	map->flags |= FTL_CACHED_VA;
-	map->flags &= ~FTL_UNMAPPED;
 	map->last_va = va;
 	map->last_pa = upage;