Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---
 lib/support/cache.c | 12 +++++++++---
 lib/support/cache.h |  2 +-
 lib/support/list.h  |  8 ++++----
 3 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/lib/support/cache.c b/lib/support/cache.c
index aec785347..ece0adece 100644
--- a/lib/support/cache.c
+++ b/lib/support/cache.c
@@ -15,6 +15,12 @@
 #include <stdint.h>
 #include <errno.h>
 
+#ifdef __GNUC__
+#define EXT2FS_ATTR(x) __attribute__(x)
+#else
+#define EXT2FS_ATTR(x)
+#endif
+
 #include "config.h"
 #include "list.h"
 #include "cache.h"
@@ -711,7 +717,7 @@ cache_node_put(
 
 void
 cache_node_set_priority(
-	struct cache *		cache,
+	struct cache *		cache EXT2FS_ATTR((unused)),
 	struct cache_node *	node,
 	int			priority)
 {
@@ -820,7 +826,7 @@ cache_flush(
 {
 	struct cache_hash	*hash;
 	struct cache_node	*node;
-	int			i;
+	unsigned int		i;
 	bool			still_dirty = false;
 
 	if (!cache->flush)
@@ -848,7 +854,7 @@ cache_report(
 	const char	*name,
 	struct cache	*cache)
 {
-	int		i;
+	unsigned int	i;
 	unsigned long	count, index, total;
 	unsigned long	hash_bucket_lengths[HASH_REPORT + 2] = { 0 };
 
diff --git a/lib/support/cache.h b/lib/support/cache.h
index 71fb9762f..cd0e8c20e 100644
--- a/lib/support/cache.h
+++ b/lib/support/cache.h
@@ -83,7 +83,7 @@ typedef unsigned int (*cache_node_resize_t)(const struct cache *c,
 					    unsigned int curr_size,
 					    int dir);
 
-static inline unsigned int cache_gradual_resize(const struct cache *cache,
+static inline unsigned int cache_gradual_resize(const struct cache *cache EXT2FS_ATTR((unused)),
 						unsigned int curr_size,
 						int dir)
 {
diff --git a/lib/support/list.h b/lib/support/list.h
index 0ec8de525..54e8e2360 100644
--- a/lib/support/list.h
+++ b/lib/support/list.h
@@ -148,13 +148,13 @@ static __always_inline bool __list_del_entry_valid(struct list_head *entry)
 	return ret;
 }
 #else
-static inline bool __list_add_valid(struct list_head *new,
-				struct list_head *prev,
-				struct list_head *next)
+static inline bool __list_add_valid(struct list_head *new EXT2FS_ATTR((unused)),
+				struct list_head *prev EXT2FS_ATTR((unused)),
+				struct list_head *next EXT2FS_ATTR((unused)))
 {
 	return true;
 }
-static inline bool __list_del_entry_valid(struct list_head *entry)
+static inline bool __list_del_entry_valid(struct list_head *entry EXT2FS_ATTR((unused)))
 {
 	return true;
 }
-- 
2.53.0